CN211849594U - Three-purpose underwater construction system of diversion cofferdam construction platform - Google Patents
Three-purpose underwater construction system of diversion cofferdam construction platform Download PDFInfo
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- CN211849594U CN211849594U CN202020066756.7U CN202020066756U CN211849594U CN 211849594 U CN211849594 U CN 211849594U CN 202020066756 U CN202020066756 U CN 202020066756U CN 211849594 U CN211849594 U CN 211849594U
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Abstract
The utility model relates to the field of underwater building construction, and discloses a three-purpose underwater construction system of a diversion cofferdam construction platform, which comprises a protection steel sheet pile and a drainage steel sheet pile which are arranged along the river banks at both sides, a U-shaped enclosure steel sheet pile which is positioned between the protection steel sheet pile and the drainage steel sheet pile, and a construction platform which is arranged above the enclosure steel sheet pile and the drainage steel sheet pile, wherein the open end of the U-shaped enclosure steel sheet pile is connected with the protection steel sheet pile, and a foundation pit is formed between the enclosure steel sheet pile and the protection steel sheet pile; the enclosure steel sheet pile comprises a transverse steel sheet pile and longitudinal steel sheet piles vertically arranged on two sides of the transverse steel sheet pile, a flow guide channel is formed by excavating between the transverse steel sheet pile and the flow guide steel sheet pile, and the construction platform is located above the flow guide channel and comprises a support steel plate frame and a steel plate arranged on the support steel plate frame. The utility model discloses a construction site is utilized to the three-dimensional on the space, can practice thrift manual work and material by the great degree, and security, economic benefits and social are showing.
Description
Technical Field
The utility model belongs to the technical field of aquatic building construction and specifically relates to a water conservancy diversion cofferdam construction platform three way aquatic construction system is related to.
Background
With the increasing development of economic construction in China, the scale of urban construction and transformation is continuously enlarged, more and more buildings need to be constructed in narrow urban rivers, and the construction conditions are more and more limited. When an underwater building is constructed in a narrow urban river channel and the working surfaces on both sides are small, the non-permanent cofferdam is often in a Larsen steel sheet pile type due to the reasons of field size limitation, water quality protection and the like. The conventional diversion cofferdam is made by adopting a river channel full-section intercepting mode, and the main method comprises the steps of respectively building a cofferdam for intercepting all river beds on the upstream and downstream river beds of a built underwater building, and additionally arranging a high-power water pump for forced drainage or burying a diversion pipe culvert according to the flow of the river channel for diversion. For example, the publication No. CN108824461A of "a larsen steel sheet pile cofferdam and construction method thereof" disclosed in the chinese patent literature includes a first larsen steel sheet pile and a second larsen steel sheet pile arranged along the width direction of a river and a plurality of transverse larsen steel sheet piles vertically arranged between two rows of steel sheet piles; the ends of the first Larsen steel sheet pile and the second Larsen steel sheet pile are abutted to the river bank, and a plurality of transverse Larsen steel sheet piles and two rows of longitudinal Larsen steel sheet piles form a plurality of cofferdam grids.
However, this method can be used only in rivers with a small flow rate or only for diversion tasks in low water periods, and cannot be effectively implemented when the flow rate of rivers in narrow cities is large, more buildings exist on both sides of river banks, and more pipelines are buried underground, which affects the construction period, construction quality, construction safety, and the like, so that a more effective construction method has to be sought.
Disclosure of Invention
The utility model relates to an overcome among the prior art the aquatic building engineering of construction in constrictive city river course because the technique is complicated, environmental condition is abominable, the construction operation face is little, sometimes be difficult to accomplish with traditional method during the construction, current cofferdam or the reliability of being restricted by pumping equipment, or hardly in flood season, implement in the river course that the flow is big, for the time limit for a project, construction quality, the problem of influence is brought to construction safety etc, a water conservancy diversion cofferdam construction platform three-purpose aquatic construction system is provided, can effectual assurance foundation ditch safety, guarantee river course flood during the construction, increase construction operation place, shorten construction period etc., social and economic benefits that are showing.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a three-purpose underwater construction system of a diversion cofferdam construction platform comprises a protection steel sheet pile and a drainage steel sheet pile which are respectively arranged along river banks at two sides, a U-shaped enclosure steel sheet pile positioned between the protection steel sheet pile and the drainage steel sheet pile, and a construction platform arranged above the enclosure steel sheet pile and the drainage steel sheet pile, wherein the open end of the U-shaped enclosure steel sheet pile is connected with the protection steel sheet pile, and a foundation pit is formed between the enclosure steel sheet pile and the protection steel sheet pile; the enclosure steel sheet pile comprises a transverse steel sheet pile arranged between the protection steel sheet pile and the drainage steel sheet pile along the river course direction and a longitudinal steel sheet pile vertically arranged on two sides of the transverse steel sheet pile, a diversion channel is formed by excavating between the transverse steel sheet pile and the drainage steel sheet pile, the construction platform is located above the diversion channel and comprises a support steel plate frame connected to the top end of the transverse steel sheet pile and the top end of the drainage steel sheet pile and a steel plate arranged on the support steel plate frame.
The utility model discloses utilize the waterproof characteristic of steel sheet pile, beat respectively in the both sides of riverbank and establish protection steel sheet pile and drainage steel sheet pile, play the effect of protection riverbank and guide rivers to with the foundation ditch enclosure in the enclosure steel sheet pile and the protection steel sheet pile of U type, play the effect in cofferdam, so that drainage and building. And through with the enclosure steel sheet pile be close to one side of drainage steel sheet pile to river course center translation, utilize the space of practicing thrift after the translation as the water conservancy diversion canal, regard the space above the water conservancy diversion canal as construction platform simultaneously, as the place of placing temporarily of construction temporary bridge, reinforcing bar processing place, the electromechanical device that the quality is less and metal construction, through the construction place of utilizing in the space three-dimensionally, reduced the interim occupation of land of construction, reduce the transport of material, improved the work efficiency and the economic benefits of construction.
When the utility model is constructed, firstly, the drainage steel sheet pile and the transverse steel sheet pile in the enclosure steel sheet pile are arranged along one side of the river channel to form a diversion channel; then excavating the diversion trench to a design elevation; then, driving longitudinal steel sheet piles on two sides in the enclosure steel sheet piles; then, driving a protection steel sheet pile, and folding the protection steel sheet pile and the enclosure steel sheet pile to form a foundation pit; after the foundation pit drains water, a supporting steel plate frame and a steel plate are arranged above the diversion channel and serve as a construction platform for temporarily processing the site.
Compared with other cofferdam methods, the underwater construction system of the utility model has the advantages that the steel sheet pile can be repeatedly used, the pipe culvert does not need to be embedded, the forced drainage by pumping equipment is not needed, the water stopping performance and the strength of the steel sheet pile are fully utilized, and the flow guide efficiency is high; the construction platform combining the support steel plate frame and the steel plate fully utilizes the space above the diversion channel, reduces the temporary occupied area, reduces the material transportation, shortens the construction period and has remarkable economic benefit; the problems of difficult diversion and small construction working area of narrow urban river channels in flood season are solved, and the construction method has a positive propulsion effect on the development of building construction technology.
Preferably, the width of the diversion trench is 1/4-1/3 of the width of the river channel, and the depth of the diversion trench is 1.5-2.5 times of the average water depth of the river. The width and the depth of the diversion channel are in the range, so that the water surface height and the water flow speed in the diversion channel can be ensured to be in a safe range.
Preferably, the enclosure steel sheet pile is of a double-layer structure and comprises an inner layer steel sheet pile and an outer layer steel sheet pile, and a clay layer is arranged between the inner layer steel sheet pile and the outer layer steel sheet pile.
Preferably, the distance between the inner layer steel sheet pile and the outer layer steel sheet pile is 2.5-3.5 m.
The enclosure steel sheet pile in the utility model adopts a double-layer structure and fills soil between the two layers, thus effectively improving the water-resisting property of the enclosure steel sheet pile and realizing the anhydrous construction in the foundation pit; and the strength and reliability of the enclosure steel sheet pile can be improved.
Preferably, the top parts of the inner layer steel sheet pile and the outer layer steel sheet pile of the longitudinal steel sheet pile are provided with transverse pull rods which are uniformly distributed along the length direction of the longitudinal steel sheet pile.
Preferably, the transverse pull rods are steel bars with phi 25-phi 30, and the distance between every two adjacent transverse pull rods is 2.5-3.5 m.
Fill out soil in the middle of the bilayer structure of enclosing the steel sheet pile, the suitable for reading that leads to two-layer steel sheet pile easily is propped open, influences the steadiness of enclosing the steel sheet pile, consequently the utility model discloses set up transverse pull rod at inlayer and outer steel sheet pile top, avoid the suitable for reading to strut, improve the steadiness of enclosing the steel sheet pile.
Preferably, the protection steel sheet pile, the drainage steel sheet pile and the enclosure steel sheet pile are all spliced Larsen steel sheet piles. The Larsen steel sheet pile is green and environment-friendly, and has high construction speed, low construction cost and good waterproof function.
Preferably, the support steel plate frame is composed of horizontal Larsen steel sheet piles uniformly distributed in the length direction of the transverse steel sheet piles and the drainage steel sheet piles, and the distance between every two adjacent horizontal Larsen steel sheet piles in the support steel plate frame is 2-3 m. The supporting steel plate frame steel plate on the flow guide channel adopts Larsen steel plate piles with the same type as other steel plate piles, so that various types of steel plate piles are prevented from being leased, the horizontal Larsen steel plate piles are respectively welded with the steel plate piles on the two sides of the flow guide channel, and the stability of the flow guide steel plate piles and the enclosure steel plate piles and the stability of the supporting steel plate frame are improved. Simultaneously be certain contained angle between two lateral walls of larsen steel sheet pile and the steel sheet, when the steel sheet received vertical direction's external force impact, the elastic deformation that larsen steel sheet pile produced can turn into partial shearing force stretching resistance, has reduced the impact that the steel sheet received greatly, has promoted construction platform's security performance.
Preferably, the steel plate is provided with anti-skid steel bars, and the periphery of the steel plate is provided with guard rails. The anti-skidding reinforcing steel bars and the protective guard can protect constructors and construction materials on the construction platform, prevent the constructors from slipping and falling, and also prevent the construction materials from falling to damage equipment or people.
Therefore, the utility model discloses following beneficial effect has:
(1) the foundation pit is enclosed in the U-shaped enclosing steel sheet pile and the protection steel sheet pile to play a role of cofferdam, one side of the enclosing steel sheet pile close to the drainage steel sheet pile is translated to the center of the river channel, the space saved after translation is used as a diversion channel, and the space above the diversion channel is used as a construction platform to form a three-purpose underwater construction system of diversion, cofferdam and construction platform, so that the construction field is utilized in a three-dimensional manner in space, the temporary occupied area of construction is reduced, the carrying of materials is reduced, and the working efficiency and the economic benefit of construction are improved;
(2) the steel sheet pile can be repeatedly applied, a pipe culvert does not need to be embedded, water pumping equipment does not need to be used for forced drainage, the water stopping performance and the strength of the steel sheet pile are fully utilized, the diversion efficiency is high, the problems of difficult diversion and small construction working surface of a narrow urban river in the flood season are solved, and the active propulsion effect is played for the development of the building construction technology;
(3) the enclosure steel sheet pile adopts a double-layer structure, soil is filled between the two layers, and the top of the enclosure steel sheet pile is provided with the transverse pull rod, so that the water-resisting property of the enclosure steel sheet pile can be effectively improved, and the waterless construction in a foundation pit is realized; and the opening of the double-layer structure can be prevented from being opened, and the reliability of the enclosure steel sheet pile is improved.
Drawings
Fig. 1 is a plan view of the present invention.
Fig. 2 is a perspective view of the construction platform of the present invention.
Fig. 3 is a sectional view taken along line a-a in fig. 1.
FIG. 4 is a schematic view of the connection structure of the inner layer steel sheet pile and the outer layer steel sheet pile in the enclosure steel sheet pile.
In the figure: the construction method comprises the following steps of 1 river bank, 2 protective steel sheet piles, 3 drainage steel sheet piles, 4 enclosure steel sheet piles, 401 transverse steel sheet piles, 4011 inner layer steel sheet piles, 4012 outer layer steel sheet piles, 4013 transverse pull rods, 4014 clay layers, 402 longitudinal steel sheet piles, 5 construction platforms, 501 support steel plate frames, 502 steel plates, 503 protective fences, 6 foundation pits and 7 flow guide channels.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Example (b):
as shown in fig. 1, the three-purpose underwater construction system of the diversion cofferdam construction platform comprises a protection steel sheet pile 2 and a drainage steel sheet pile 3 which are respectively arranged along the river banks 1 at two sides, a U-shaped enclosure steel sheet pile 4 which is positioned between the protection steel sheet pile and the drainage steel sheet pile, and a construction platform 5 which is arranged above the enclosure steel sheet pile and the drainage steel sheet pile, wherein the protection steel sheet pile, the drainage steel sheet pile and the enclosure steel sheet pile are spliced SP-IV type Larsen steel sheet piles. The open end of the U-shaped enclosure steel sheet pile is welded with the protection steel sheet pile, and a foundation pit 6 is formed between the enclosure steel sheet pile and the protection steel sheet pile.
As shown in fig. 2 to 4, the enclosure steel sheet piles include a transverse steel sheet pile 401 disposed between the enclosure steel sheet pile and the drainage steel sheet pile along the river course direction and longitudinal steel sheet piles 402 vertically welded to both sides of the transverse steel sheet pile, and a flow guide channel 7 is formed by excavating between the transverse steel sheet pile and the drainage steel sheet pile. The width of the river channel is 25 meters, the average water depth is 1.5 meters, the width of the diversion canal is 7 meters, and the depth is 3 meters.
The enclosure steel sheet pile is of a double-layer structure and comprises an inner layer steel sheet pile 4011 and an outer layer steel sheet pile 4012 which are spaced by 3.0m, a clay layer 4014 is arranged between the inner layer steel sheet pile and the outer layer steel sheet pile, the clay layer is filled to a height of 4m (the clay layer is filled to the highest water level and comprises wave height of 0.5-0.7 m), a transverse pull rod 4013 is welded at the top of each of the inner layer steel sheet pile and the outer layer steel sheet pile every 3m along the length direction of the longitudinal steel sheet pile, the transverse pull rods are made of phi 25 steel bars, and each tie rod is 3.5m long.
The construction platform is located the diversion canal top, including the support steel sheet frame 501 and the 20mm steel sheet 502 of setting on the support steel sheet frame of connecting horizontal steel sheet pile and drainage steel sheet pile top, the support steel sheet frame comprises along horizontal steel sheet pile and drainage steel sheet pile length direction evenly distributed's horizontal SP-IV type larsen steel sheet pile, and adjacent horizontal larsen steel sheet pile interval is 2.5m, and the welding has anti-skidding reinforcing bar on the steel sheet, and the steel sheet is equipped with rail guard 503 all around.
The construction steps are as follows: the construction method comprises the steps of driving a drainage steel sheet pile and transverse steel sheet piles (double rows of Larsen steel sheet piles are driven) in an enclosure steel sheet pile along one side of a river channel, excavating a guide channel to a design elevation, driving outer steel sheet piles of longitudinal steel sheet piles on two sides in the enclosure steel sheet pile, driving a protection steel sheet pile and the outer steel sheet piles of the enclosure steel sheet piles to be folded to form a foundation pit, driving inner layer steel sheet piles of the longitudinal steel sheet piles in the enclosure steel sheet piles, arranging one phi 25 steel bar at intervals of 3m to manufacture transverse pull rods, filling clay layers in the double layers of Larsen steel sheet piles, draining the foundation pit, and arranging a support steel plate frame and steel plates above the guide channel to serve as a construction platform.
The utility model provides a three way aquatic construction system utilizes the construction site through three-dimensional on the space, has reduced the interim area of taking up an area of construction, reduces the transport of material, can practice thrift manual work and material by the great degree, but reuse material, green, security, economic benefits and social are showing.
Claims (9)
1. A diversion cofferdam construction platform three-purpose underwater construction system is characterized by comprising a protection steel sheet pile (2) and a drainage steel sheet pile (3) which are respectively arranged along river banks at two sides, a U-shaped enclosure steel sheet pile (4) positioned between the protection steel sheet pile and the drainage steel sheet pile, and a construction platform (5) arranged above the enclosure steel sheet pile and the drainage steel sheet pile, wherein the open end of the U-shaped enclosure steel sheet pile is connected with the protection steel sheet pile, and a foundation pit (6) is formed between the enclosure steel sheet pile and the protection steel sheet pile; the enclosure steel sheet pile comprises a transverse steel sheet pile (401) arranged between the protection steel sheet pile and the drainage steel sheet pile along the river course direction and a longitudinal steel sheet pile (402) vertically arranged on two sides of the transverse steel sheet pile, a diversion channel (7) is formed by excavating between the transverse steel sheet pile and the drainage steel sheet pile, the construction platform is located above the diversion channel and comprises a support steel plate frame (501) connected with the top end of the transverse steel sheet pile and the top end of the drainage steel sheet pile and a steel plate (502) arranged on the support steel plate frame.
2. The three-purpose underwater construction system of a diversion cofferdam construction platform as claimed in claim 1, wherein the width of the diversion trench is 1/4-1/3 of the width of the river channel, and the depth of the diversion trench is 1.5-2.5 times of the average water depth of the river.
3. The three-purpose underwater construction system of the diversion cofferdam construction platform as claimed in claim 1, wherein the enclosure steel sheet pile is a double-layer structure comprising an inner layer steel sheet pile (4011) and an outer layer steel sheet pile (4012), and a clay layer (4014) is arranged between the inner layer steel sheet pile and the outer layer steel sheet pile.
4. The three-purpose underwater construction system of a diversion cofferdam construction platform as recited in claim 3, wherein the distance between said inner layer steel sheet pile and said outer layer steel sheet pile is 2.5-3.5 m.
5. The three-purpose underwater construction system of a diversion cofferdam construction platform as claimed in claim 3, wherein the top of the inner and outer steel sheet piles of the longitudinal steel sheet pile are provided with transverse tie bars (4013) uniformly distributed along the length direction of the longitudinal steel sheet pile.
6. The three-purpose underwater construction system of a diversion cofferdam construction platform as recited in claim 5, wherein said transverse tie bars are steel bars with a diameter of phi 25 to phi 30, and the distance between adjacent transverse tie bars is 2.5 to 3.5 m.
7. The three-purpose underwater construction system for a diversion cofferdam construction platform as recited in claim 1, wherein said protection steel sheet pile, said diversion steel sheet pile and said enclosure steel sheet pile are all spliced Larsen steel sheet piles.
8. The three-purpose underwater construction system for the diversion cofferdam construction platform as recited in claim 1, wherein said support steel plate frame is composed of horizontal larsen steel plate piles uniformly distributed along the length direction of the transverse steel plate piles and the diversion steel plate piles, and the distance between adjacent horizontal larsen steel plate piles in the support steel plate frame is 2-3 m.
9. The three-purpose underwater construction system for a diversion cofferdam construction platform as recited in claim 1, wherein said steel plate is provided with anti-skid steel bars and guard rails (503) are provided around the steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020066756.7U CN211849594U (en) | 2020-01-13 | 2020-01-13 | Three-purpose underwater construction system of diversion cofferdam construction platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020066756.7U CN211849594U (en) | 2020-01-13 | 2020-01-13 | Three-purpose underwater construction system of diversion cofferdam construction platform |
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| Publication Number | Publication Date |
|---|---|
| CN211849594U true CN211849594U (en) | 2020-11-03 |
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|---|---|---|---|
| CN202020066756.7U Active CN211849594U (en) | 2020-01-13 | 2020-01-13 | Three-purpose underwater construction system of diversion cofferdam construction platform |
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| Country | Link |
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| CN (1) | CN211849594U (en) |
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- 2020-01-13 CN CN202020066756.7U patent/CN211849594U/en active Active
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