阅读说明：本技术 沉井井壁组合式平台结构及沉井的施工方法 (Open caisson wall combined platform structure and open caisson construction method ) 是由 刘少林 张益� 徐钦明 张贵保 周书东 刘恺 张彤炜 赵琰 刘亮 马骁智 林海 于 2021-09-03 设计创作，主要内容包括：本发明提供了一种沉井井壁组合式平台结构,设置于沉井内壁中,包括固定于沉井内壁上的多个支撑架,多个支撑架按预设高度等距的分布于沉井内壁中,相邻两支撑架上设置有支撑板,多个支撑板之间首尾连接以于沉井内壁上围设成环形的操作平台；支撑板远离沉井内壁的一侧设置有防护板网,防护板网呈竖直的设置于支撑板的顶面上,操作平台的底面还设置有防坠网,防坠网连接于多个所述支撑架。本发明的沉井井壁组合式平台结构,整体结构稳固牢靠,安全性能好,不仅提高了沉井施工人员的工作效率,也相应地减少了沉井施工人员的工作量,且更环保。本发明还提供了一种沉井的施工方法。(The invention provides a combined platform structure for a well wall of a sunk well, which is arranged in the inner wall of the sunk well and comprises a plurality of support frames fixed on the inner wall of the sunk well, wherein the support frames are equidistantly distributed in the inner wall of the sunk well according to a preset height; one side that the open caisson inner wall was kept away from to the backup pad is provided with the protection plate net, and the protection plate net is vertical setting on the top surface of backup pad, and operation platform's bottom surface still is provided with prevents weighing down the net, prevents weighing down the net and connects in a plurality of the support frame. The combined platform structure for the wall of the open caisson has a stable and firm integral structure and good safety performance, improves the working efficiency of open caisson constructors, correspondingly reduces the workload of the open caisson constructors, and is more environment-friendly. The invention also provides a construction method of the open caisson.)

1. A combined platform structure for a well wall of a caisson is arranged in the inner wall of the caisson and is characterized by comprising a plurality of support frames fixed on the inner wall of the caisson, wherein the support frames are distributed in the inner wall of the caisson at equal intervals according to a preset height; one side that the backup pad was kept away from the open caisson inner wall is provided with the fender net, the fender net be vertical set up in on the top surface of backup pad, operation platform's bottom surface still is provided with prevents weighing down the net, prevent weighing down the net connect in a plurality of the support frame.

2. The caisson wall combined platform structure of claim 1, wherein the support frame comprises a plurality of prefabricated anchors pre-embedded in the inner wall of the caisson, and the plurality of prefabricated anchors on the same support frame are located on the same axis.

3. The caisson wall combined platform structure of claim 2, wherein the support frame further comprises a fixing member disposed on the prefabricated anchor member, the fixing member being fixed to the inner wall of the caisson by the prefabricated anchor member.

4. The caisson wall combined platform structure of claim 3, wherein the fixing member is connected with a supporting member, and the supporting member protrudes out of the inner wall of the caisson to support the supporting plate.

5. The structure of the combined platform for open caisson and well wall of claim 4, wherein a support member is further disposed between the support member and the fixing member, and the connection between the support member and the fixing member is reinforced by the support member.

6. The structure of the combined platform for caisson wall and well wall of claim 5, wherein one end of the supporting element is connected to the end of the supporting element far away from the fixing element, and the other end of the supporting element is connected to the end of the fixing element far away from the supporting element, so that the fixing element, the supporting element and the supporting element form a triangular supporting structure.

7. The caisson wall combined platform structure of claim 5, wherein each support is provided with a connecting ring, the connecting ring is used for connecting the anti-falling net, and the anti-falling net is connected to each support frame through the connecting ring.

8. The caisson wall combined platform structure of claim 4, wherein a connecting rod is arranged at one end of the supporting piece far away from the inner wall of the caisson, the connecting rod is vertically arranged on the supporting piece, and the guard plate net is arranged between two adjacent connecting rods.

9. The caisson wall combined platform structure of claim 5, wherein the support frame is of an integral structure.

10. The construction method of the open caisson is characterized by comprising the following steps:

measuring and positioning a construction site before open caisson construction, then excavating an open caisson foundation pit, an open caisson foundation pit cushion layer and carrying out blade construction;

the first section of the open caisson is manufactured, a shaft inner template and a support are erected firstly, then steel bars are bound, a prefabricated anchor is pre-buried, the prefabricated anchor and the steel bars in the open caisson are firmly fixed, an outer template and the support are erected, concrete is poured, and the template is maintained and removed;

hoisting a fixing piece, a supporting piece and a connecting ring in the first section of the open caisson to form a supporting frame on the inner wall of the open caisson; support plates are erected on two adjacent support frames, and the adjacent support plates are connected end to form an annular operating platform in the open caisson; mounting connecting rods at one end of the supporting piece far away from the inner wall of the open caisson, mounting a protective plate net on the adjacent connecting rods, and mounting an anti-falling net between the connecting rings of the operating platform, thereby completing the forming of the open caisson wall combined platform structure in the first section of the open caisson;

carrying out in-well excavation in the first section of open caisson to enable the first section of open caisson to sink, and starting to manufacture a second section of open caisson after the first section of open caisson sinks to a preset position;

performing formwork supporting, concrete pouring and formwork removal construction on the open caisson wall combined platform structure at the top of the first open caisson section;

forming a caisson wall combined platform structure in a second section of the caisson according to the requirement of the corresponding caisson construction height, and forming one caisson wall combined platform structure in each section of the caisson according to a preset height;

after the second section of open caisson is sunk, constructing a third section of open caisson;

after the third section of open caisson is constructed, the open caisson wall combined platform structure of the first section is dismantled, the open caisson wall combined platform structure on the first section of open caisson is hoisted to the corresponding position of the third section of open caisson for installation, and the process is repeated;

sinking the final section of the open caisson, performing construction of open caisson bottom sealing and bottom plate pouring, performing quality inspection after bottom sealing, and finally performing open caisson quality inspection and acceptance.

Technical Field

The invention relates to the technical field of building construction, in particular to a combined platform structure for a well wall of a sunk well and a construction method of the sunk well.

Background

In the municipal engineering construction, the open caisson is not only a foundation, but also a building enclosure structure during construction, has the advantages of high bearing capacity, good impermeability, strong integrity, good stability, small influence on adjacent buildings and the like, and is widely applied to the construction of municipal engineering such as foundation pits of large piers, sewage pump stations, shield assembly wells, jacking pipes and the like. The large-diameter open caisson is used as a common building envelope structure and applied to pipe jacking engineering with deep depth.

At present, in the open caisson construction process, because the open caisson construction is carried out in sections, the sinking depth of the open caisson is increased along with the increase of the number of sections of construction, and a higher blank face is formed in the well wall, a working platform needs to be set up and is used for construction operations such as operator walking, open caisson reinforcement binding, formwork setting, concrete pouring, formwork removing and the like. The traditional method mostly adopts a mode of erecting a floor type steel pipe scaffold from bottom to top on the inner side of the wall of the open caisson as a working platform, and the open caisson is constructed in sections, so the scaffold needs to be repeatedly erected and dismantled in the construction process.

Therefore, it is necessary to provide a combined platform structure for a wall of a caisson, which can reduce the cost and improve the construction efficiency.

Disclosure of Invention

The invention aims to provide a combined platform structure for a well wall of an open caisson, which can reduce cost and improve construction efficiency.

Another object of the present invention is to provide a method for constructing an open caisson.

In order to achieve the purpose, the invention provides a combined platform structure for a well wall of a caisson, which is arranged in the inner wall of the caisson and comprises a plurality of support frames fixed on the inner wall of the caisson, wherein the support frames are equidistantly distributed in the inner wall of the caisson according to a preset height; one side that the open caisson inner wall was kept away from to the backup pad is provided with the protection plate net, and the protection plate net is vertical setting on the top surface of backup pad, and operation platform's bottom surface still is provided with prevents weighing down the net, prevents weighing down the net and connects in a plurality of the support frame.

Preferably, the support frame comprises a plurality of prefabricated anchors pre-embedded in the inner wall of the open caisson, and the prefabricated anchors on the same support frame are positioned on the same axis.

Preferably, the support frame further comprises a fixing member provided on the prefabricated anchor member, and the fixing member is fixed on the inner wall of the open caisson through the prefabricated anchor member.

Preferably, the fixing member is connected with a supporting member, and the supporting member protrudes out of the inner wall of the open caisson to support the supporting plate.

Preferably, a bracket is further disposed between the supporting member and the fixing member, and the bracket is used to reinforce the connection between the supporting member and the fixing member.

Preferably, one end of the supporting component is connected to the end of the supporting component far away from the fixing component, and the other end of the supporting component is connected to the end of the fixing component far away from the supporting component, so that the fixing component, the supporting component and the supporting component form a triangular supporting structure.

Preferably, each support member is provided with a connecting ring, the connecting ring is used for connecting the anti-falling net, and the anti-falling net is connected to each support frame through the connecting ring.

Preferably, the end of the support piece far away from the inner wall of the open caisson is provided with a connecting rod, the connecting rod is vertically arranged on the support piece, and the guard plate net is arranged between the two adjacent connecting rods.

Preferably, the support frame is of an integral structure.

Compared with the prior art, the open caisson wall combined platform structure replaces the traditional scaffold, does not need to repeatedly set and remove the scaffold, and is efficient, economic and safe. In the aspect of engineering quality, the open caisson wall combined platform structure can be supported by metal materials such as steel, part of steel structures can be pre-assembled and produced, standardized and mass production can be realized, and the construction quality and precision of the open caisson wall combined platform structure are guaranteed. In the aspect of structural safety, the triangular support structure is adopted, the stability and the bearing capacity of the support piece are improved, the safety of the operation platform is further improved, the stress is stable and firm, and the safety of high-altitude operation in open caisson construction is guaranteed. In the aspect of construction efficiency, the open caisson wall combined platform structure adopts the operating platform, so that the working efficiency of open caisson constructors is improved, and the workload of the open caisson constructors is correspondingly reduced. In the aspect of cost economy, the prefabricated components are adopted, so that the construction materials and construction operators of the open caisson are saved, and the measure cost of open caisson construction is greatly reduced. In the aspect of green, adopt the steel member of part assembled, improved the reuse rate of material, reduced consumption and turnover number of times in the material use, reached green effect.

In order to achieve the other purpose, the invention provides a construction method of an open caisson, which comprises the following steps:

before open caisson construction, measuring, setting out and positioning a construction site, then excavating an open caisson foundation pit, an open caisson foundation pit cushion layer and carrying out blade foot construction;

the first section of the open caisson is manufactured, a shaft inner template and a support are erected firstly, then steel bars are bound, a prefabricated anchor is pre-buried, the prefabricated anchor and the steel bars in the open caisson are firmly fixed, an outer template and the support are erected, concrete is poured, and the template is maintained and removed;

hoisting a fixing piece, a supporting piece and a connecting ring in the first section of the open caisson to form a supporting frame on the inner wall of the open caisson; erecting support plates on the two adjacent support frames, wherein the adjacent support plates are connected end to form an annular operating platform in the open caisson; mounting connecting rods at one end of the supporting piece far away from the inner wall of the open caisson, mounting a protective plate net on the adjacent connecting rods, and mounting an anti-falling net between the connecting rings of the operating platform, thereby completing the forming of the open caisson wall combined platform structure in the first section of the open caisson;

carrying out in-well excavation in the first section of open caisson to enable the first section of open caisson to sink, and starting to manufacture a second section of open caisson after the first section of open caisson sinks to a preset position;

performing formwork supporting, concrete pouring and formwork removal construction on the open caisson wall combined platform structure at the top of the first open caisson section;

forming the open caisson wall combined platform structure in the second open caisson according to the requirement of the corresponding open caisson construction height, and forming one open caisson wall combined platform structure in each open caisson according to the preset height;

after the second section of open caisson is sunk, constructing a third section of open caisson;

after the third section of open caisson is constructed, the open caisson wall combined platform structure of the first section is dismantled, the open caisson wall combined platform structure on the first section of open caisson is hoisted to the corresponding position of the third section of open caisson for installation, and the process is repeated;

sinking the final section of the open caisson, performing construction of open caisson bottom sealing and bottom plate pouring, performing quality inspection after bottom sealing, and finally performing open caisson quality inspection and acceptance.

Drawings

Fig. 1 is a partial structural schematic diagram of a caisson wall combined platform structure provided by an embodiment of the invention.

Fig. 2 is a partial structural schematic diagram of the caisson wall combined platform structure provided by the embodiment of the invention.

Fig. 3 is a schematic structural diagram of the support frame formed on the wall of the open caisson in fig. 1.

Fig. 4 is a schematic view of the structure of fig. 1 in which a support plate is mounted on a support frame.

Fig. 5 is a schematic structural view of the installation guard assembly of fig. 1.

Fig. 6 is a schematic structural view of the support plate of fig. 1.

Fig. 7 is a side view of fig. 1.

FIG. 8 is a top view of the open caisson

Description of reference numerals:

100. the open caisson wall is of a combined platform structure; 101. the inner wall of the open caisson;

10. a support frame; 11. prefabricating an anchor; 12. fastening a bolt; 13. a fixing member; 14. a support member; 15. a holder; 16. a connecting rod; 17. a connecting ring;

20. an operating platform; 21. a support plate; 211. a fitting portion;

30. a guard assembly; 31. a guard plate net; 32. an anti-falling net.

Detailed Description

In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.

Referring to fig. 1, 2 and 8, the present invention provides a caisson wall combined platform structure 100, which is disposed in an inner wall 101 of the caisson. The open caisson wall combined platform structure 100 comprises a plurality of support frames 10 fixed on the inner wall 101 of the open caisson, and the support frames 10 are equidistantly distributed in the inner wall 101 of the open caisson according to a preset height. The preset height is the work of formwork support, pouring, formwork removal and the like which can be performed by an operator standing on the operation platform 20 in each open caisson. Of course, the distances between the supporting frames 10 may not be equal, as long as the installation heights of the supporting frames 10 are substantially the same. Specifically, support plates 21 are arranged on two adjacent support frames 10, and a plurality of support plates 21 are connected end to form an annular operating platform 20 on the inner wall 101 of the open caisson. Namely, a plurality of supporting plates 21 enclose to form an annular operating platform 20 for construction operations such as operator walking, open caisson reinforcement binding, template erection, concrete pouring and template dismantling. Wherein, one side that the backup pad 21 kept away from open caisson inner wall 101 is provided with protection plate net 31, and protection plate net 31 is vertical setting up on the top surface of backup pad 21, can protect the security of operating personnel on operation platform 20 on the side. On the other hand, a fall prevention net 32 is further provided on the bottom surface of the operation platform 20, and the fall prevention net 32 is connected to the plurality of support frames 10. The anti-falling net 32 is arranged, so that the safety of the open caisson construction operating platform 20 can be further improved, the risk that construction operators fall off from the operating platform 20 can be reduced, and serious safety accidents caused by the fact that the operators fall carelessly during operation are reduced.

Referring to fig. 3, in some alternative embodiments, the support frame 10 includes a plurality of prefabricated anchors 11 pre-embedded in the inner wall 101 of the open caisson, and the plurality of prefabricated anchors 11 on the same support frame 10 are located on the same axis to better install the fixing member 13. The prefabricated anchor 11 is bound with the steel bar in the open caisson in advance, and then concrete is poured, so that the prefabricated anchor 11 and the open caisson form an integrated structure, and the structure is more stable and firm. The prefabricated anchor 11 can be a structure made of steel material. The support frame 10 further comprises a fixing member 13 provided on the prefabricated anchor 11, the fixing member 13 being fixed to the inner wall 101 of the caisson by means of the prefabricated anchor 11. Specifically, the fixing member 13 is mounted to the prefabricated anchor 11 by fastening the bolt 12, and then the fixing member 13 is fixed to the inner wall 101 of the caisson by the prefabricated anchor 11. In addition, a support member 14 is connected to the fixing member 13, and the support member 14 protrudes out of the inner wall 101 of the caisson to support the support plate 21.

Referring to fig. 3, in some alternative embodiments, a bracket 15 is further disposed between the supporting member 14 and the fixing member 13, and the bracket 15 is used to reinforce the connection between the supporting member 14 and the fixing member 13. Specifically, one end of the carrier 15 is connected to the end of the supporting member 14 away from the fixing member 13, and the other end of the carrier 15 is connected to the end of the fixing member 13 away from the supporting member 14, so that the fixing member 13, the supporting member 14 and the carrier 15 constitute a triangular support structure. The triangular support structure enables the whole structure to be more stable, the connection to be more reliable and the safety to be better.

Referring to fig. 4, 6 and 8, in some alternative embodiments, support plates 21 are disposed on two adjacent support members 14, and a plurality of support plates 21 are connected end to form an annular operating platform 20 on the inner wall 101 of the caisson. Be provided with on the backup pad 21 with support piece 14 complex cooperation portion 211, can make better the cooperating with support piece 14 of backup pad 21 through cooperation portion 211, connect more firmly, can fix with screw or welded fastening etc. after connecting for overall structure can form a whole, and the dismouting is more convenient.

Referring to fig. 1, 2, 5 and 8, in some alternative embodiments, the caisson wall combined platform structure 100 further comprises a protection assembly 30, and the protection assembly 30 comprises a protection plate net 31 and a falling prevention net 32. Specifically, one end of the support 14 far away from the inner wall 101 of the open caisson is provided with a connecting rod 16, the connecting rod 16 is vertically installed on the support 14, and the guard plate net 31 is installed between two adjacent connecting rods 16 so as to protect the worker on the operation platform 20 on the side surface. Each support 15 can be further provided with a connecting ring 17, the connecting rings 17 can also be arranged on the fixing part 13, the connecting rings 17 are used for connecting the anti-falling nets 32, the anti-falling nets 32 are connected to the support frames 10 through the connecting rings 17, so that the anti-falling net 32 can be formed below the operating platform 20, the safety of the open caisson construction operating platform 20 can be further improved, the risk that construction operators fall off from the operating platform 20 can be reduced, and serious safety accidents caused by the fact that the operators fall off carelessly during operation are reduced.

Referring to fig. 3 to 5, in some alternative embodiments, the supporting frame 10 is an integral structure. The fixing piece 13, the supporting piece 14, the supporting piece 15 and the connecting rod 16 on the supporting frame 10 can be assembled in advance to form a whole, each part can be made of steel or other stable metal materials, the parts can be fixed by welding, and the fixing piece 13 is installed on the prefabricated anchor piece 11 through the fastening bolt 12 to complete installation of the whole supporting frame 10, and can be hoisted and installed during installation. In the open caisson construction process, the whole support frame 10 can be detached and hoisted to the corresponding positions of other open caisson in the process of detaching the open caisson wall combined platform structure 100, so that the disassembly and the assembly are more convenient, the time is saved, and the efficiency is improved.

The invention also provides a construction method of the open caisson, which comprises the following steps:

before open caisson construction, a construction site is measured, set and positioned, and then an open caisson foundation pit and an open caisson foundation pit cushion layer are excavated and blade foot construction is carried out.

And (3) manufacturing the first section of the open caisson, erecting a template and a support in the shaft, binding reinforcing steel bars, pre-burying the prefabricated anchor 11, firmly fixing the prefabricated anchor 11 and the reinforcing steel bars in the open caisson, erecting an outer template and the support, pouring concrete, maintaining and removing the template. Namely, the prefabricated anchor 11 is pre-embedded before concrete is poured.

The fixing member 13, the supporting member 14, the supporting member 15 and the connection ring 17 are hung in the first section of the caisson to form the supporting frame 10 on the inner wall 101 of the caisson. Support plates 21 are arranged on two adjacent support frames 10, and the adjacent support plates 21 are connected end to form an annular operating platform 20 in the open caisson. And mounting connecting rods 16 at one end of the support member 14 far away from the inner wall 101 of the open caisson, mounting a guard plate net 31 on the adjacent connecting rods 16, and mounting an anti-falling net 32 between the connecting rings 17 of the operating platform 20, thereby completing the formation of the open caisson wall combined platform structure 100 in the first section of the open caisson. Namely, a plurality of fixing members 13 are uniformly distributed on the circumference of the interior of the caisson by fastening bolts 12 on the basis of the prefabricated anchors 11 so as to be connected with the supporting member 14, the supporting member 15, the connecting rod 16, the connecting ring 17 and the like to form the supporting frame 10. The fixing member 13, the supporting member 14, the support member 15, the connecting rod 16, and the connecting ring 17 may be made of a metal material such as steel. The fixing member 13, the supporting member 14, the supporting member 15, the connecting rod 16, the connecting ring 17, etc. may be assembled in advance to form the support frame 10, and then the fixing member 13 is fixed to the prefabricated anchor 11 by the fastening bolt 12 to complete the installation of the support frame 10. The support frame 10 can be installed on the inner wall 101 of the open caisson by means of hoisting and the like.

After the support frame 10 is installed, a support plate 21 is erected on the adjacent support member 14, and the support plate 21 can be a scaffold plate. Then, the adjacent support plates 21 are connected end to end, and the connecting rod 16 which is vertically arranged is connected to the free end of the support piece 14 through the fastening bolt 12, so that the operating platform 20 is more stable and reliable.

The guard plate net 31 is arranged on the adjacent connecting rods 16, and the anti-falling net 32 is arranged between the connecting rings 17 of the operating platform 20, so that serious safety accidents caused by the fact that workers carelessly fall off during operation can be effectively avoided, and the safety of the operating platform 20 is further improved.

Carrying out in-well excavation in the first section of open caisson to enable the first section of open caisson to sink, and starting to manufacture a second section of open caisson after the first section of open caisson sinks to a preset position; the preset position is a proper position to which the open caisson needs to be sunk during engineering construction.

And (3) performing formwork supporting, concrete pouring and formwork removal construction on the open caisson wall combined platform structure 100 at the top of the first open caisson.

And forming the open caisson wall combined platform structure 100 in the second open caisson according to the requirement of the corresponding open caisson construction height, and forming one open caisson wall combined platform structure 100 in each open caisson according to a preset height. It can be understood that the open caisson of the first section and the second section is formed with the open caisson wall combined platform structure 100 on the open caisson inner wall 101 in advance; when the third open caisson starts, only the prefabricated anchor 11 is pre-buried and the supporting frame 10 and other structures are hoisted subsequently when the open caisson is formed.

And after the second section of open caisson is sunk, constructing a third section of open caisson.

And after the third section of open caisson is constructed, the open caisson wall combined platform structure 100 of the first section is dismantled, the open caisson wall combined platform structure 100 on the first section of open caisson is hoisted to the corresponding position of the third section of open caisson for installation, and the steps are repeated. When the open caisson wall combined platform structure 100 is used for open caisson construction, the working efficiency of open caisson constructors can be improved, and the workload of the open caisson constructors is correspondingly reduced.

Sinking the final section of the open caisson, performing construction of open caisson bottom sealing and bottom plate pouring, performing quality inspection after bottom sealing, and finally performing open caisson quality inspection and acceptance. And in the sinking process of each section of open caisson, the elevation of the open caisson must be measured at any time to ensure uniform sinking, and well-made sinking record is carried out.

As shown in fig. 1 to 8, the caisson wall and wall combined platform structure 100 of the present invention replaces the conventional scaffold, and is more efficient, economical and safe without repeatedly erecting and dismantling the scaffold. The open caisson wall combined platform structure 100 comprises a plurality of support frames 10 fixed on the inner wall 101 of the open caisson, the support frames 10 are equidistantly distributed in the inner wall 101 of the open caisson according to a preset height, each part of the support frames 10 can be independently installed in the inner wall 101 of the open caisson, or the whole support frame 10 can be installed in advance and then installed on the inner wall 101 of the open caisson as a whole. Then, support plates 21 are arranged on two adjacent support frames 10, and the support plates 21 are connected end to form an annular operating platform 20 on the inner wall 101 of the open caisson in an enclosing manner. Namely, a plurality of supporting plates 21 enclose to form a ring-shaped operating platform 20 for construction operations such as operator walking, steel bar binding, formwork erection, concrete pouring and formwork removal. Wherein, one side that the backup pad 21 kept away from open caisson inner wall 101 is provided with protection plate net 31, and protection plate net 31 is vertical setting up on the top surface of backup pad 21, can protect the security of operating personnel on operation platform 20 on the side. On the other hand, a fall prevention net 32 is further provided on the bottom surface of the operation platform 20, and the fall prevention net 32 is connected to the plurality of support frames 10. The protection plate net 31 and the anti-falling net 32 are arranged, so that the safety of the open caisson construction operating platform 20 can be further improved, the risk that construction operators fall off from the operating platform 20 can be reduced, and serious safety accidents caused by the fact that the operators fall carelessly during operation are reduced. The combined platform structure 100 for the wall of the open caisson is stable and firm in overall structure and good in safety performance, improves the working efficiency of open caisson constructors, correspondingly reduces the workload of the open caisson constructors, can repeatedly use components, and is more environment-friendly.

The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.