Long Branch Receives Funding To Build Sheet Pile Wall To Protect Shore

LONG BRANCH: The city will be receiving funding in the near future to take further action to protect its coast from future storms.

Long Branch will be receiving over $7.3 million in federal funding to build a sheet pile wall that will run along the east side of the city’s new boardwalk.

20150317The city is expected to go out to bid for the new boardwalk sometime this month after bonding over $18 million for its design and construction.

The Long Branch boardwalk, as well as the bluffs, bulkheads, and adjacent roads, were severely damaged as a result of Superstorm Sandy.

The funding for the sheet pile wall is being provided by the Federal Emergency Management Agency (FEMA), according to a release from Congressman Frank Pallone (D-6).

“This grant will help to ensure that our community is resilient if another major storm hits our shores,” Pallone said in the release. “As we continue to rebuild, we have a unique opportunity here in Long Branch, and throughout the state, to improve our infrastructure so it is stronger than before and can withstand future storms.”

The wall will be 5,450 lineal feet steel and will be installed for feet deep into the ground. It will help control erosion and reduce or eliminate the threat of damage to the boardwalk, bluffs, bulkheads, and roadways in the event of future storms.

The installation of the sheet pile wall will allow the destroyed boardwalk to be elevated above the base flood elevation (BFE). The new boardwalk will also be almost 10 wider than the original.

Construction of the new boardwalk is expected to begin in the spring and last through the summer months.
This article comes from wordontheshore editor released

Railway Engineering: cofferdam excavation

Pit cofferdam cofferdam is usually divided into soil, soil and steel sheet pile cofferdam cofferdam.

1. General requirements for pit cofferdam: Top cofferdam should be higher than the highest water level may occur during construction 0.5m; erosion protection measures for the river section should be compressed cofferdam caused; cofferdam should do waterproof tight reduce leakage; cofferdam should meet the needs within the area of infrastructure construction; cofferdam should meet the requirements of strength and stability.

2. The depth of soil cofferdam apply within 2m, the flow rate of less than 0.3m / s, the role of small and riverbed scour for smaller water permeability soil. Construction should be based on the actual situation of the construction site, the use of the pier, station location partial temporary cofferdam or first excavated canals, and then build the bridge located at the weir weir. Construction, should first clean up the river debris from the upstream to the downstream embankment close.

3. Soil cofferdam apply depth of not more than 3m, the flow rate of less than 1.5m / s, a small river of water permeability of the soil. Soil bags commonly used straw bags, sacks or bags, the soils and the amount is generally bag capacity 1/2 ~ 1/3, stacking requirements seam down around each other wrong, and stacking neatly as possible.

4. Steel sheet pile cofferdam apply Deep Water riverbed is sandy soil, clay, gravel and other soil and weathered rock formations. Sheet pile plane generally used for circular, rectangular and round end shape. Steel sheet pile cofferdam construction program: the steel sheet pile finishing a prison setting surrounded by a steel sheet pile around the prison to install a plug Hop dragon fight. Punched steel sheet pile method can be divided into block by block (group) punched, hit after the first mating dragon and part-by-block interpolation start playing after the first mating portion Long after the fight.

5. Excavation and back cover: After the success of the cofferdam can be conducted within the cofferdam excavation soil, water points and dry excavation excavation, excavation excavation methods have GRABBING Excavation, human open digging, excavation punch suction method.

 

L / S sheet pile

L-shaped main application and embankment, dam walls, dig trenches and ditching support.
Section light, small footprint pile wall, locking in the same direction, to facilitate construction. Suitable for excavation and construction of municipal projects.
L sheet pile icon
L-shaped steel sheet pile common specification sheet

Model
Width
Height
Thickness
Each pile Single
Per meter wall
Moment of inertia
Section modulus
mm
mm
mm
Kg/m
Kg/ m2
Cm4/m
Cm3/m
WRL1.5
700
100
3.0
21.4
30.6
724
145
WRL2
700
150
3.0
22.9
32.7
1674
223
WRl3
700
150
4.5
35.0
50.0
2469
329
WRL4
700
180
5.0
40.4
57.7
3979
442
WRL5
700
180
6.5
52.7
75.3
5094
566
WRL6
700
180
7.0
57.1
81.6
5458
606

s-shaped steel sheet pile common specification sheet

Model
Width
Height
Thickness
Each pile Single
Per meter wall
Moment of inertia
Section modulus
mm
mm
mm
Kg/m
Kg/ m2
Cm4/m
Cm3/m
WRS4
600
260
3.5
31.2
41.7
5528
425
WRS5
600
260
4.0
36.6
48.8
6703
516
WRS6
700
260
5.0
45.3
57.7
7899
608
WRS8
700
320
5.5
53.0
70.7
12987
812
WRS9
700
320
6.5
62.6
83.4
15225
952

Series Cold-bent Steel Sheet Pile

Cold-bent steel sheet pile is manufactured of hot (cold) rolled strip steel which passes though several pairs of forming blocks composed of forming roller sheet of different shapes and is formed through continuous roll-type bending process so as to achieve various sectional forms for various required steel sheet piles.

GP series cold-bent steel sheet pile products have the following characteristics:

(1)Thanks to the fact that cold-bent steel sheet pile is made of hot-rolled strip steel through continuous compaction, the design of sectional structure is provided with high flexibility for production of products with large section, small and equal wall thickness;

(2)GP series cold-bent steel sheet pile is suitable for large sized products with effective width, height and thickness not more than 16mm, having conformed(adapted) to the development trend of the world’s cold-bent steel sheet pile products and satisfied the requirements of engineering application of cold-bent steel sheet pile;

(3)The maximum section modulus of U-mode products of GP series cold-bent steel sheet pile is up to 4260 cm3/m2, and that of Z-mode series is up to 5100 cm3/m2; Thanks to the rational section structure design and the state-of-art forming technology of GP series;

(4)cold-bent steel sheet pile, the ratio of section modulus to product weight (also known as “mass coefficient”) has been increasing continuously. This contributes to better economic benefit of application and broadens the application area of cold-bent steel sheet pile;

The use of large-sized cold-bent steel sheet pile facilitates the reduction of working load of pile sinking(driving) , the improvement of work efficiency and the reduction in quantity of water seal joints.

 

Discussion on the sheet piles

Hot-rolled steel sheet pile was initially used in Europe at the beginning of the 20th century and is now a proven technology in foreign countries. But in China, this technology is still at its early stage. With the apid growth of Chinese economy, this environmentally friendly new building material will inevitably be widely used.

Depending on their production process, steel sheet pile products are divided into cold-bent and hot-rolled piles which bring out the best in each other and have their own advantages. In the past years, the market has given priority to hot-rolled steel sheet pile of which the processing method and information can be found everywhere that has been widely recognized. Cold-bent steel sheet pile is formed by cold-bending machine set through rolling depression, and its side interlock could be continually connected to form a steel structure of sheet-pile wall. Though, produced by a different working method, the use of cold-bent steel sheet pile is similar to that of hot rolled steel sheet pile while their scopes of application are different to some extent. Throughout the years, cold bent steel sheet piles have been widely used, and broad operation experience has been accumulated.

Nanjing Grand Steel Sheet Pile Co., Ltd is a key enterprise of China being engaged the research & development, design, production and service of cold-rolled forming section. Grand developed and produced China’s first piece of cold-bent steel sheet pile with a section modulus of 1360cm3 in October 2006 and was then expanded to have established an annual production capacity of 400,000 tons of cold-bent steel sheet piles.

Grand has been engaged in the research & development of cold-bent steel sheet piles according to EN standards (EN 10249: non-alloy cold-bent steel sheet pile) and now rank among leading cold-bent steel sheet pile manufacturers of the world at present. Furthermore, Grand has built up its own brand in the field of steel sheet pile, and its GP series cold-bent steel sheet piles have been used in a number of key projects at home and abroad. GP series products that feature outstanding section modulus and large moment of inertia can be widely used for both general retaining wall and basic structures and for ports, piers, river bank reinforcement and land and water foundation pit protection structures projects etc.

During its development in the past years, Grand has given full play to its own cold-rolled forming section development technology and improved the structures of lots of combined steel sheet piles, contributing to more rational project design and construction and more remarkable economic benefit; in the meantime, in order to better satisfy the requirements of individual customers, most cold-bent steel sheet piles of Grand are integrated with personalized design according to foundation conditions.

Grand can now produce GPU and GPZ series cold-bent steel sheet piles of over 80 specifications with the maximum section modulus of up to 6000 cm3/m and a maximum thickness of 16mm. When the section modulus of our product is the same with that of hot-rolled steel sheet pile, the steel consumption per square meter would decrease by 10%~15%, and this means sharp reduction of construction cost; in this way, the concept of “environmentally friendly, energy-saving and high-efficiency new-style building material” is realized.

Nanjing Grand Steel Sheet Pile Co., Ltd has established an overall service system for complete and sophisticated design, production, technical support and construction. With the support from top-class research institutes and universities (colleges) in the field of engineering of China, our technology sections can provide all services that a leading cold-bent steel sheet pile manufacturer should be able to offer, and can provide technical support for any step during steel sheet pile engineering, offering targeted and effective technical service taking into account various needs of customers.

Z-shaped steel sheet pile

Locking symmetrically distributed on both sides of the neutral axis, and the web is continuous, which greatly increases the section modulus and flexural rigidity to ensure that the mechanical properties can be full cross-section. Because of its unique cross-sectional shape and reliable Larsen (Larssen) locking.

z z-shaped steel sheet pile shaped steel sheet pile

1. The flexible design, a relatively high section modulus and the mass ratio;
2. The higher the moment of inertia, thereby increasing the sheet pile wall stiffness, reduced displacement deformation;
3. The width of the large, effectively lifting and piling saving time;
The section width is increased, reducing the number of necking sheet pile wall, directly improve the performance of its sealing; 5. serious corrosion treatment site were thicker, more excellent corrosion resistance.

Z-shaped steel sheet pile common specification sheet

Model
Width
Height
Thickness
Basal area
Each pile Single
Per meter wall
Moment of inertia
Section modulus
mm
mm
mm
Cm2/m
Kg/m
Kg/ m2
Cm4/m
Cm3/m
WRZ16-635
635
379
7
123.4
61.5
96.9
30502
1610
WRZ18-635
635
380
8
140.6
70.1
110.3
34717
1827
WRZ28-635
635
419
11
209.0
104.2
164.1
28785
2805
WRZ30-635
635
420
12
227.3
113.3
178.4
63889
3042
WRZ32-635
635
421
13
245.4
122.3
192.7
68954
3276
WRZ12-650
650
319
7
113.2
57.8
88.9
19603
1229
WRZ14-650
650
320
8
128.9
65.8
101.2
22312
1395
WRZ34-675
675
490
12
224.4
118.9
176.1
84657
3455
WRZ37-675
675
491
13
242.3
128.4
190.2
91327
3720
WRZ38-675
675
491.5
13.5
251.3
133.1
197.2
94699
3853
WRZ18-685
685
401
9
144
77.4
113
37335
1862
WRZ20-685
685
402
10
159.4
85.7
125.2
41304
2055

U-shaped steel sheet pile

Basic introduction to U-shaped steel sheet pile

1. WR series of steel sheet pile section structure reasonable design, advanced molding technology, making section modulus to weight ratio of steel sheet pile products continues to increase, so that the application can be obtained in good economic broaden the cold-formed steel sheet pile applications.
2, WRU shaped steel sheet pile rich specification model.
3, according to the European standard of design and production, in the form of a symmetrical structure in favor of re-use, re-use in the hot-rolled equal, and have certain angle extent, to facilitate correct construction deviation;
4, the use of advanced high-strength steels and production equipment, making the performance of cold-formed steel sheet pile is guaranteed;
5, can be customized according to customer requirements in particular the length of the construction has brought great convenience vertebra, while also reducing costs.
6, due to the production of convenience, and supporting the use of composite pile time can be pre-ordered at the factory.
7, production design and production cycle is short, the performance of steel sheet piles according to customer requirements.

U-series of cold-formed steel sheet pile legend and advantages

1) U-shaped steel sheet pile rich specification model.
2) According to the European standard of design and production, symmetrical structure is conducive to re-use, re-use in the hot-rolled equivalent.
3) can be custom-made according to customer requirements length, for the construction of vertebral brought great convenience, but also reduce costs.
4) Due to the production of convenience, and supporting the use of a combination of the pile can be pre-ordered time at the factory.
5) production design and production cycle is short, the performance of steel sheet piles according to customer requirements.
u-shaped steel sheet pile common specification sheet

Model
Width
Height
Thickness
Basal area
Each pile Single
Per meter wall
Moment of inertia
Section modulus
Type
Width
Height
Thickness
Sectional area
Weight per pile
Weight per wall
Moment of Inertia
Modulus of section
mm
mm
mm
Cm2/m
Kg/m
Kg/ m2
Cm4/m
Cm3/m
WRU7
750
320
5
71.3
42.0
56.0
10725
670
WRU8
750
320
6
86.7
51.0
68.1
13169
823
WRU9
750
320
7
101.4
59.7
79.6
15251
953
WRU10-450
450
360
8
148.6
52.5
116.7
18268
1015
WRU11-450
450
360
9
165.9
58.6
130.2
20375
1132
WRU12-450
450
360
10
182.9
64.7
143.8
22444
1247
WRU11-575
575
360
8
133.8
60.4
105.1
19685
1094
WRU12-575
575
360
9
149.5
67.5
117.4
21973
1221
WRU13-575
575
360
10
165.0
74.5
129.5
24224
1346
WRU11-600
600
360
8
131.4
61.9
103.2
19897
1105
WRU12-600
600
360
9
147.3
69.5
115.8
22213
1234
WRU13-600
600
360
10
162.4
76.5
127.5
24491
1361
WRU18- 600
600
350
12
220.3
103.8
172.9
32797
1874
WRU20- 600
600
350
13
238.5
112.3
187.2
35224
2013
WRU16
650
480
8.
138.5
71.3
109.6
39864
1661
WRU 18
650
480
9
156.1
79.5
122.3
44521
1855
WRU20
650
540
8
153.7
78.1
120.2
56002
2074
WRU23
650
540
9
169.4
87.3
133.0
61084
2318
WRU26
650
540
10
187.4
96.2
146.9
69093
2559
WRU30-700
700
558
11
217.1
119.3
170.5
83139
2980
WRU32-700
700
560
12
236.2
129.8
185.4
90880
3246
WRU35-700
700
562
13
255.1
140.2
200.3
98652
3511
WRU36-700
700
558
14
284.3
156.2
223.2
102145
3661
WRU39-700
700
560
15
303.8
166.9
238.5
109655
3916
WRU41-700
700
562
16
323.1
177.6
253.7
117194
4170
WRU 32
750
598
11
215.9
127.1
169.5
97362
3265
WRU 35
750
600
12
234.9
138.3
184.4
106416
3547
WRU 38
750
602
13
253.7
149.4
199.2
115505
3837
WRU 40
750
598
14
282.2
166.1
221.5
119918
4011
WRU 43
750
600
15
301.5
177.5
236.7
128724
4291
WRU 45
750
602
16
320.8
188.9
251.8
137561
4570

Classification of sheet piles

Sheet pile is a marginal linkage with, and this linkage can be freely combined to form a continuous tight retaining walls or retaining steel body.
Temperature

Cold-formed steel
Continuous cold bending deformation of the strip to form a Z-shaped cross-section, U-shaped or other shapes, building foundation can be connected to each other by locking sheet metal.
Sheet pile to roll roll forming process for the production of cold-formed steel is applied in civil engineering major product of a will of steel sheet pile with a pile driver hit (pressure) into the ground, making interconnected into a steel sheet pile wall to block and retaining soil. Section type commonly used are: U-shaped, Z-shaped and straight belly plate. Sheet pile suitable for soft ground and high water table deep excavation, simple construction, the advantage of good sealing performance, can be reused. Delivery status of cold-formed steel sheet pile length delivery pile of 6m, 9m, 12m, 15m, according to user requirements, length processing, maximum length of 24m. (If you have special requirements for length, can be raised in order) to the actual weight of cold-formed steel sheet pile delivery, it can be delivered by theoretical weight. The application of cold-formed steel sheet pile sheet pile products with applications in civil engineering construction convenient, fast progress, does not require a large construction equipment, is conducive to seismic design features, and according to the specific circumstances of the project, change the cross-sectional shape of the cold-formed steel sheet pile and length, so that the structural design is more economical and reasonable. In addition, after the optimization design of cold-formed steel sheet pile section of the product, its quality factor products has been significantly improved, reducing the weight per meter pile wall width, reduce project costs.

Technical parameters
Cold-formed steel sheet pile products are hot-rolled steel sheet piles and piles of two types divided by the production process. In engineering construction, cold-formed steel sheet pile narrow range of applications, mostly as a supplementary application materials, hot-rolled steel sheet pile has been a leading product engineering applications. Based on the many advantages of steel sheet piles in construction jobs, the State Administration of Quality Supervision, Inspection and Quarantine, the National Standardization Management Committee on 14 May 2007 issued a “U-shaped hot-rolled steel sheet pile,” the national standard, and in December 1, 2007 formally implemented. 20th century, Maanshan Limited with self universal mill production line imported technology and equipment conditions, producing a width of 400mm U-shaped steel sheet pile of more than 5,000 tons, and successfully applied to the Nen River Bridge cofferdam, Jingjiang new century shipyard 300,000 ton dock and Bangladesh flood control projects and other projects. However, due to low productivity during the trial production, economic efficiency, and less domestic demand and lack of technical experience and other reasons, can not continue to produce. According to statistics, China’s annual consumption of steel sheet piles remained at about 30,000 tons, accounting for only 1 %% of the world, and is limited to a few ports, docks, shipyards and bridge construction projects and other permanent cofferdam, excavation and other temporary works.
Cold-formed steel sheet pile is in a continuous roll forming by Cold Unit, and the locking side may overlap to form a continuous sheet pile wall of steel structures. Cold-formed steel sheet pile using a thin sheet (common thickness 8mm ~ 14mm), to roll forming machine processing. Its low cost of production and the price is cheap, length control is also more flexible. But simple processing methods, the same thickness all parts pile, resulting in increased cross-sectional dimensions can not optimize the amount of steel; locking parts refractory shapes, loose connection at the snap, you can not seal; by cold bending processing equipment capacity constraints, only can produce steel intensity level is low, compared with the thickness of thin products; and cold bending stress generated during processing large pile easy to produce using tear applications with great limitations. In engineering construction, cold-formed steel sheet pile narrow range of applications, mostly only as a supplement to the material applications. Cold-formed steel sheet pile Features: according to the actual situation of the project, selecting the most economical and reasonable cross-section, optimize engineering design, material savings of 10-15% compared with the performance of hot-rolled steel sheet pile, greatly reducing the construction cost.

Steel sheet pile structure

Steel sheet pile cofferdam is the most common kind of sheet pile cofferdam. Is a steel sheet pile with a locking, which has a candy bar-shaped cross-section, and the Z-shaped trough, etc., a variety of sizes and interlocking forms. There Larsson common type, Lackawanna style and so on.

Its advantages are: high strength, easy to break into the hard soil; constructability in deep water, if necessary, with Diagonal bracing become a confining cage. Waterproof performance; energy needed to form various shape cofferdam, and can be reused many times, so it’s a wide range of uses.

Often used in bridge construction caisson top of the cofferdam, a wide range of its use. Column base, pile foundation and open-cut and so on the basis of the cofferdam.

These multi-use single-walled cofferdam enclosed within the cofferdam has vertical and horizontal support, if necessary, with Diagonal bracing become an enclosed cage. Column as the foundation of China Nanjing Yangtze River Bridge, had used a circular steel sheet pile cofferdam, 21.9 meters in diameter, 36 m long sheet piles, there are a variety of sizes and interlocking forms. After the required strength back underwater concrete pumping and pier caps body building, pumping design depth of 20 meters.

In hydraulic structures in general, the construction area is large, the cofferdam used to make isomers. It consists of many interconnected system monomers, each of which in turn consists of a number of steel sheet pile monomer composition, intermediate monomer with tamped earth. The envelope cofferdam great range, can not support the weir wall supporting, so each monomer alone can resist overturning, sliding and interlock to prevent crack at. Commonly used form of a circular shape and the next.

1, steel sheet pile
2, on both sides of the joint structure
3, in the ground, water forming a wall