CN117431936A - Double-layer integral type internal support rapid assembling method for locking steel pipe pile cofferdam - Google Patents
Double-layer integral type internal support rapid assembling method for locking steel pipe pile cofferdam Download PDFInfo
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- CN117431936A CN117431936A CN202311634632.9A CN202311634632A CN117431936A CN 117431936 A CN117431936 A CN 117431936A CN 202311634632 A CN202311634632 A CN 202311634632A CN 117431936 A CN117431936 A CN 117431936A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 58
- 239000010959 steel Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims description 7
- 238000012937 correction Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
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- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a rapid assembly method for double-layer integral inner support of a locking steel pipe pile cofferdam, which belongs to the technical field of cofferdam construction and comprises the following steps: step one: welding and assembling the corner structural members, the edge structural members and the central structural member in a rear field, heightening a plurality of steel pile casings on the periphery of the steel cofferdam, and assembling bracket on the steel pile casings; step two: carrying out block loading and transportation on the corner structural member, the edge structural member, the central structural member and the auxiliary structural member to the bank of the construction site; step three: placing a plurality of corner structural members in the cofferdam near corners, then placing a plurality of edge structural members between two corner structural members, welding the edge structural members and the corner structural members beside, placing a plurality of center structural members in gaps formed by surrounding the corner structural members and the edge structural members after welding, welding and connecting, and finally lifting and assembling auxiliary structural members to complete the assembly of the internal support; the assembly difficulty is small, and the construction time is short.
Description
Technical Field
The invention belongs to the technical field of cofferdam construction, and particularly relates to a double-layer integral type internal support rapid assembly method for a lock catch steel pipe pile cofferdam.
Background
The steel pipe pile cofferdam is a cofferdam structure which is formed by combining steel plates, steel pipe piles and profile steel, can be formed by combining simpler steel pipe piles and profile steel, is low in production and installation cost, and gradually increases the requirements on cofferdam design and construction along with the further development of large-span bridge engineering construction and the increasing of bridge foundation size.
In the construction of a general steel pipe pile cofferdam, the internal support and the ring beam are mainly used for processing parts in a processing factory, then are hoisted to brackets in the cofferdam by using equipment such as a gantry crane, a crawler crane and the like on site to be assembled and welded, the parts are processed into an internal support whole, and the problems of high assembly difficulty and long construction time exist when the large cofferdam is constructed; assembling a lower layer inner support and a protective guard, installing a lower layer hanging and limiting system, and integrally lowering the lower layer inner support; assembling an upper layer inner support and a protective guard, installing an upper layer hanging and limiting system, and integrally lowering the upper layer inner support; the upper layer and the lower layer are internally supported and reinforced, and the upper layer hanging and the lower layer hanging and limiting systems are dismantled; the two-layer inner support is manufactured and preassembled by a factory, the precision is high, the bracket strength and rigidity are high, the two-layer inner support is connected with the lifting lug on the steel casing by a pin shaft, the mounting and dismantling times are few, the construction is convenient, the assembling quality of the inner support on the bracket is controllable, and the construction period is shortened; however, in the method, the double-layer internal support still needs to be installed and constructed in two layers, and the two-layer internal support still needs to be composed of components, so that the construction time is long, and therefore, the rapid assembling method for the double-layer integral internal support of the lock catch steel pipe pile cofferdam is required, wherein the assembling difficulty is small, and the construction time is short.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a rapid assembling method for double-layer integral inner supports of a lock catch steel pipe pile cofferdam, which has the characteristics of small assembling difficulty and short construction time.
The aim of the invention can be achieved by the following technical scheme:
the rapid assembly method of the double-layer integral inner support of the locking steel pipe pile cofferdam and the rapid assembly method of the double-layer integral inner support of the locking steel pipe pile cofferdam comprise the following steps:
step one: dividing the double-layer integral internal support into a corner structural member, an edge structural member, a central structural member and an auxiliary structural member for connecting the corner structural member, the edge structural member and the central structural member, and carrying out welding assembly work on the corner structural member, the edge structural member and the central structural member in a rear field, wherein the corner structural member, the edge structural member and the central structural member are all formed by upper-layer support plates and lower-layer support plates which are arranged in parallel with each other, and connecting pieces for connecting the lower-layer support plates of the upper-layer support plates, simultaneously heightening a plurality of steel protection cylinders on the periphery of the steel cofferdam, and welding assembly brackets on the plurality of steel protection cylinders;
step two: carrying out block loading and transportation on the corner structural member, the edge structural member, the central structural member and the auxiliary structural member to the bank of the construction site;
step three: and placing a plurality of corner structural members in the cofferdam close to corners, then placing a plurality of edge structural members between the two corner structural members, welding the edge structural members and the corner structural members beside, placing a plurality of center structural members in gaps formed by surrounding the corner structural members and the edge structural members after welding, welding and connecting the plurality of center structural members with the adjacent corner structural members or the edge structural members, and finally lifting the auxiliary structural members to the installation positions and assembling the auxiliary structural members with the corresponding corner structural members, the edge structural members and the center structural members to finish inner support assembling.
As a preferred technical solution of the present invention, the third step further includes: after the inner support is assembled, the inner support guiding device and the lowering device are assembled, then the bracket is cut off, and the inner support is lowered to the designed elevation.
As a preferred technical solution of the present invention, the third step further includes: when assembling, set up pressure sensor between the upper supporting plate lower floor's backup pad of two adjacent structures, pressure sensor uploads pressure data to control module, and control module starts according to pressure data instruction siren.
As a preferred technical solution of the present invention, the third step further includes: the control module calculates the difference value of the pressure data between the upper supporting plates and the lower supporting plates of the two adjacent structural members, and instructs the alarm to start according to the difference value.
As a preferred technical solution of the present invention, the third step further includes: the control module calculates a correction coefficient A according to the weight m and the standard weight m0 of the structural members which are input in advance, calculates the difference value of pressure data between the upper supporting plates and the lower supporting plates of the two adjacent structural members according to the correction coefficient, and instructs the alarm to start according to the difference value.
As a preferred technical solution of the present invention, the third step further includes: and lifting the corner structural member, the edge structural member, the central structural member and the auxiliary structural member to a target place by using the gantry crane.
As a preferred technical solution of the present invention, the second step further includes: in the transportation process, the tiled profile steel is used as a block transportation and storage platform.
The beneficial effects of the invention are as follows:
(1) The inner supports are arranged as structural members formed by assembling the components welded in the back field, each structural member comprises an upper supporting plate and a lower supporting plate, and in the actual construction process, the components are assembled in the back field, the arrangement of the inner supports in the two layers can be completed simultaneously in one splicing process, and meanwhile, the heightening of part of the steel protective cylinder and the mounting of the bracket are synchronously carried out, so that the construction period is saved;
(2) By arranging the pressure sensor between two adjacent structural members which are in contact with each other, the two adjacent structural members are detected after being placed, and after the situation that the distance between the two structural members is too far or interference fit occurs, operators are timely reminded, so that the operators can conveniently take corresponding measures, and the overall structural strength of the inner support is improved; meanwhile, the control module detects the pressure born by the upper structural member and the lower structural member in the adjacent structural members for comparison, and gives an alarm when the comparison result shows that the pressure difference is overlarge, so that a signal can be given out to remind operators when the pressure difference between the upper and lower layers is overlarge, and the influence of the transverse shearing force on the internal support is reduced.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic view of a corner structure of the present invention;
FIG. 3 is a schematic view of the edge structure of the present invention;
FIG. 4 is a schematic view of the structure of the central structural member of the present invention;
fig. 5 is a schematic structural view of the auxiliary structural member of the present invention.
Description of main reference numerals:
in the figure: 1. a cofferdam; 2. a steel pile casing; 3. a steel pipe pile; 4. an inner support; 41. corner structural members; 42. an edge structure; 43. a central structural member; 44. an auxiliary structural member; 5. and (5) bracket.
Detailed Description
In order to further describe the technical means and effects adopted by the invention for achieving the preset aim, the following detailed description is given below of the specific implementation, structure, characteristics and effects according to the invention with reference to the attached drawings and the preferred embodiment.
Referring to fig. 1-5, a rapid assembly method for double-layer integral internal support of a locking steel pipe pile cofferdam comprises the following steps:
step one: the double-layer integral inner support 4 is divided into a corner structural member 41, an edge structural member 42, a central structural member 43 and an auxiliary structural member 44 for connecting the corner structural member, the edge structural member and the central structural member, in the embodiment, the radial cross section of the lock catch steel pipe pile cofferdam 1 is octagonal, the octagonal is composed of four inclined edges and four straight edges, two straight edges which are parallel to each other are shorter than the other two straight edges which are parallel to each other, meanwhile, the four corner structural members 41 are shared, the corner structural member 41 is integrally quadrangular, the quadrangle is composed of three straight edges and one inclined edge, the inclined edges correspond to one inclined edge of the cofferdam 1 and are equal in length, the four corner structural members 41 can cover the part near the inner inclined edge of the cofferdam 1, the two edge structural members 42 are similarly shared, one edge of the two edge structural members 42 is integrally quadrangular, one edge of the two corner structural members 41 can cover the part near the short straight edges of the cofferdam 1, the auxiliary structural member 44 comprises filling members for filling gaps between the corner structural members 41 and the edge structural members 42 of the cofferdam 1, and the connecting the edges of the corner structural member 41 and the central structural member 43 are used for connecting the two end edge structural members 43 of the cofferdam 1;
specifically, the corner structural member 41, the edge structural member 42, the central structural member 43 and the auxiliary structural member 44 are assembled and welded in a back field or by steel materials, and are all formed by upper support plates and lower support plates which are arranged in parallel with each other, after the assembly is completed, the lower support plates of the structural members jointly form a lower structure of the inner support 4, and the upper support plates jointly form an upper structure of the inner support 4;
in order to further save the construction time and improve the construction efficiency, in the assembling process, a plurality of steel casings 2 are connected to be high synchronously, and bracket 5 is welded and assembled on a plurality of steel casings 2, in the embodiment, 10 steel casings 2 which are inserted and beaten in advance are connected to be high, and bracket 5 is arranged on the steel casings 2 which are connected to be high, because the space between the steel casings 2 is used for assembling between adjacent structural members, after the peripheral steel casings 2 are raised, the space formed by surrounding the top of the peripheral steel casings 2 is not overlapped with the internal steel casings 2 any more, and the inner steel casings 2 can be prevented from being blocked and assembled; therefore, the inner support 4 components are assembled in the back field, and another step can be synchronously carried out, so that the construction period is saved;
after the structural part is welded and the steel casing 2 is processed, performing a second step;
step two: the corner structural member 41, the edge structural member 42, the central structural member 43 and the auxiliary structural member 44 are transported to the shore of the construction site in a block loading manner, specifically, in order to ensure smooth transportation, the sizes of the structural members in the first step are ensured to be 4.5-5.5 m in the width direction of the vehicle during transportation, and meanwhile, the transportation is carried to the construction site by a trailer with a load of 55 t;
in order to reduce friction between the structural member and the transport means, in the second transport process, the flat section steel is used as a block transport and storage platform;
after the transportation is finished, executing the step three: firstly, placing four corner structural members 41 in a cofferdam 1 near corners, ensuring that the four corner structural members 41 can cover the part near the inner oblique edges of the cofferdam 1, in the embodiment, one straight edge of the four corner structural members 41 is simultaneously overlapped with part of long straight edges of the cofferdam 1 and is not overlapped with the short straight edges of the cofferdam 1, the other two straight edges far away from the oblique edges of the corner structural members 41 are mutually perpendicular, meanwhile, the corner structural members 41 are placed on bracket 5 on a corresponding steel protective cylinder 2 near the corners of the cofferdam 1, and the bracket 5 of the part maintains the corner structural members 41 at a fixed height and keeps static;
after the corner structure 41 is placed. Placing a plurality of edge structural members 42 between the two opposite corner structural members 41, wherein in the embodiment, after the edge structural members 42 are placed, the corner structural members 41 and the edge structural members 42 are overlapped with all edges of the cofferdam 1 in the height of the inner support 4, and the edge structural members 42 are also supported by the bracket 5;
after the placement, the corner structural member 41 and the edge structural member 42 are kept stationary and attached to each other under the support of the bracket 5, and at this time, an operator connects the attached portions of the two structural members by welding;
subsequently, similarly, the central structural member 43 is placed by hoisting onto the bracket 5 placed under the gap formed by the corner structural member 41 and the edge structural member 42, then kept stationary with the rest of the structural members supported by the bracket 5, and then welded by the operator, completing the assembly of the inner support 4 in this portion;
finally, the auxiliary structural member 44 is lifted to the installation position by the crane, and the bracket 5 cannot be arranged below the installation position because the arrangement position of the part of structural members is positioned between the rest structural members, so that the auxiliary structural member is kept stationary by lifting, and welding assembly is completed;
after the corner structural member 41, the edge structural member 42, the central structural member 43 and the auxiliary structural member 44 are assembled, the whole double-layer integral inner support 4 is assembled;
through setting up interior support 4 as the structural component that constitutes at back ground welded component assembly, and every structural component includes upper supporting plate and lower floor's backup pad simultaneously to in actual construction process, when back ground welding assembly component, can accomplish simultaneously the setting of support 4 in the double layer in once concatenation flow, carry out the heightening of partial steel pile casing 2 and the installation of bracket 5 in step, saved construction period.
During actual use, the assembly position of the inner support 4 is always higher than the target height, so that the inner support 4 needs to be integrally lowered after being assembled, and for this purpose, the third step further comprises: after the inner support 4 is assembled, assembling a guide device and a lowering device of the inner support 4, then cutting off the bracket 5, and lowering the inner support 4 to the designed elevation;
after the bracket 5 is cut off, the whole inner support 4 loses support, so that the lower device is connected with the inner support 4, the inner support 4 is kept horizontally to be lowered to the elevation, and the inner support 4 is lowered to the designed elevation;
in concrete construction, the inner support 4 can play a guiding role in inserting the steel pipe pile 3, so that optionally, after the inner support 4 is placed, the steel pipe pile 3 is inserted, the cofferdam 1 is finally closed, water is pumped to +3.000m, then the bracket 5 is placed under the elevation of the inner support 4 to support the inner support 4, and the placing system is removed, so that the final construction of the cofferdam 1 is completed.
In the above-mentioned assembly process, although will interior support 4 set up to at a plurality of large-scale structures of back field shaping, however, because each structure installs respectively, the circumstances that can't fine cooperation each other appears in probability, for example, adjacent structure is after placing on bracket 5 of corresponding position, the too far distance each other can lead to combining inseparably, can't form firm interior support 4 structure, and when interference fit each other, the circumstances of mutual extrusion can appear, lead to producing internal stress, structural strength to interior support 4 causes the influence, for monitoring the cooperation condition, step three still includes: when the alarm is assembled, a pressure sensor is arranged between the lower support plates of the upper support plates of the two adjacent structural members, the pressure sensor uploads pressure data to a control module, and the control module instructs the alarm to start according to the pressure data;
specifically, pressure sensors are arranged between every two adjacent structural members which are connected with each other through welding, one pressure sensor is arranged between each two structural members, two upper supporting plates and two lower supporting plates are respectively arranged, the two pressure sensors are overlapped in the vertical direction, the two overlapped pressure sensors are in a group, a control module is electrically connected with each pressure sensor and receives pressure data uploaded by the pressure sensors at a frequency of once per second, meanwhile, an operator inputs a pressure threshold range in the control module, the control module compares the received pressure value with the threshold range to judge whether the pressure value is in the threshold range or not, and in order to avoid random errors and emergency triggering alarms, when the pressure values received by the control module for ten times continuously exceed the threshold range, the structural members on two sides of the pressure sensor are excessively far or excessively near, and the welding is required to be stopped by intervention or reinstalled;
through setting up pressure sensor between two adjacent and mutual contact's structure, place the back to two adjacent structure and detect, after the too far or interference fit's of mutual distance condition appears, in time remind the operating personnel, make things convenient for the operating personnel to take corresponding measure, improved the overall structure intensity of interior support 4.
In the above structure, besides the problem of the integral matching relationship between the adjacent structural members, the situation of inconsistent matching conditions between the two upper supporting plates and the two lower supporting plates may occur, for example, the two upper supporting plates are combined more tightly, the two lower supporting plates are combined more loosely, at the moment, shearing force is applied to the joint connecting the upper supporting plates and the lower supporting plates, the inner supporting structure 4 is possibly caused to descend, therefore, in the third step, after receiving the pressure data, the control module calculates the difference value between the data uploaded by the pressure sensors belonging to the same group, meanwhile, the control module inputs a comparison threshold value in advance, when the difference value of the same group of data exceeds the comparison threshold value, the control module instructs the alarm to start, and operators check whether hidden troubles such as irregular placement exist;
the control module detects the pressure received by the upper structural member and the lower structural member in the adjacent structural members to compare, and an alarm is sent out when the comparison result shows that the pressure difference is overlarge, so that a signal can be sent out to remind operators when the pressure difference between the upper structural member and the lower structural member is overlarge, and the influence of the transverse shearing force on the inner support 4 is reduced.
In the above process, when the total mass of the structural member is larger, because under the same condition, the pressure of the structural member with larger mass to the adjacent structural member is larger, and therefore, under the condition that the influence of the transverse shearing force is smaller, the alarm still gives an alarm, and the step three further comprises: the control module calculates a correction coefficient A according to the weight m and the standard weight m0 of the structural members which are input in advance, calculates the difference value of pressure data between the upper supporting plates and the lower supporting plates of the two adjacent structural members according to the correction coefficient, and instructs the alarm to start according to the difference value;
specifically, a=0.6xm/m0+0.4, m0 is less than or equal to m and less than or equal to 1.5m0, the control module judges whether the difference is greater than an Axcomparison threshold, when the weight of a structural member is greater, the value of the Axcomparison threshold is greater, the difference is less likely to exceed the Axcomparison threshold, the judgment standard is improved when the weight of the structural member is greater, when the weight of the structural member is lower, the value of the Axcomparison threshold is less, the difference is more likely to exceed the Axcomparison threshold, and the judgment standard is reduced when the weight of the structural member is lower;
the control module adjusts the value for comparison according to the total weight of the structural member, so that the difference value judgment can be adjusted according to the total weight of the structural member, an alarm is prevented from being sent out under normal conditions, the judgment precision is improved, and the structural strength of the inner support 4 is better ensured.
The working principle and the using flow of the invention are as follows:
firstly, performing welding and assembling work of a corner structural member 41, an edge structural member 42 and a central structural member 43 in a rear field, simultaneously heightening a plurality of steel casing pipes 2 on the periphery of a steel cofferdam 1, and welding and assembling bracket 5 on the plurality of steel casing pipes 2;
and then executing the step two: carrying the corner structural member 41, the edge structural member 42, the central structural member 43 and the auxiliary structural member 44 in a block loading manner to the shore of the construction site; after the execution is finished, executing the step III: placing a plurality of corner structural members 41 in the cofferdam 1 near corners, then placing a plurality of edge structural members 42 between the two corner structural members 41, welding the edge structural members 42 and the corner structural members 41 beside, placing a plurality of center structural members 43 in a gap formed by surrounding the corner structural members 41 and the edge structural members 42 after welding, welding and connecting a plurality of center structural members 43 with the adjacent corner structural members 41 or the edge structural members 42, and finally lifting an auxiliary structural member 44 to an installation position and assembling the auxiliary structural member 44 with the corresponding corner structural members 41, the edge structural members 42 and the center structural members 43 to finish assembling of the inner support 4;
in the third step, the pressure sensor arranged between the upper supporting plates and the lower supporting plates of the two adjacent structural members uploads the pressure data to the control module, and the control module instructs the alarm to start according to the pressure data.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (7)
1. A rapid assembling method for double-layer integral inner supports of a locking steel pipe pile cofferdam is characterized by comprising the following steps: comprises the following steps:
step one: dividing the double-layer integral internal support into a corner structural member, an edge structural member, a central structural member and an auxiliary structural member for connecting the corner structural member, the edge structural member and the central structural member, and carrying out welding assembly work on the corner structural member, the edge structural member and the central structural member in a rear field, wherein the corner structural member, the edge structural member and the central structural member are all formed by upper-layer support plates and lower-layer support plates which are arranged in parallel with each other, and connecting pieces for connecting the lower-layer support plates of the upper-layer support plates, simultaneously heightening a plurality of steel protection cylinders on the periphery of the steel cofferdam, and welding assembly brackets on the plurality of steel protection cylinders;
step two: carrying out block loading and transportation on the corner structural member, the edge structural member, the central structural member and the auxiliary structural member to the bank of the construction site;
step three: and placing a plurality of corner structural members in the cofferdam close to corners, then placing a plurality of edge structural members between the two corner structural members, welding the edge structural members and the corner structural members beside, placing a plurality of center structural members in gaps formed by surrounding the corner structural members and the edge structural members after welding, welding and connecting the plurality of center structural members with the adjacent corner structural members or the edge structural members, and finally lifting the auxiliary structural members to the installation positions and assembling the auxiliary structural members with the corresponding corner structural members, the edge structural members and the center structural members to finish inner support assembling.
2. The rapid splicing method for double-layer integral inner supports of a lock catch steel pipe pile cofferdam, which is characterized by comprising the following steps of: the third step further comprises: after the inner support is assembled, the inner support guiding device and the lowering device are assembled, then the bracket is cut off, and the inner support is lowered to the designed elevation.
3. The rapid splicing method for double-layer integral inner supports of a lock catch steel pipe pile cofferdam, which is characterized by comprising the following steps of: the third step further comprises: when assembling, set up pressure sensor between the upper supporting plate lower floor's backup pad of two adjacent structures, pressure sensor uploads pressure data to control module, and control module starts according to pressure data instruction siren.
4. The rapid splicing method for double-layer integral inner supports of the locking steel pipe pile cofferdam according to claim 3, which is characterized in that: the third step further comprises: the control module calculates the difference value of the pressure data between the upper supporting plates and the lower supporting plates of the two adjacent structural members, and instructs the alarm to start according to the difference value.
5. The rapid splicing method for double-layer integral inner supports of the locking steel pipe pile cofferdam, which is characterized in that: the third step further comprises: the control module calculates a correction coefficient A according to the weight m and the standard weight m0 of the structural members which are input in advance, calculates the difference value of pressure data between the upper supporting plates and the lower supporting plates of the two adjacent structural members according to the correction coefficient, and instructs the alarm to start according to the difference value.
6. The rapid splicing method for double-layer integral inner supports of a lock catch steel pipe pile cofferdam, which is characterized by comprising the following steps of: the third step further comprises: and lifting the corner structural member, the edge structural member, the central structural member and the auxiliary structural member to a target place by using the gantry crane.
7. The rapid splicing method for double-layer integral inner supports of a lock catch steel pipe pile cofferdam, which is characterized by comprising the following steps of: the second step further comprises: in the transportation process, the tiled profile steel is used as a block transportation and storage platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311634632.9A CN117431936A (en) | 2023-12-01 | 2023-12-01 | Double-layer integral type internal support rapid assembling method for locking steel pipe pile cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311634632.9A CN117431936A (en) | 2023-12-01 | 2023-12-01 | Double-layer integral type internal support rapid assembling method for locking steel pipe pile cofferdam |
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| Publication Number | Publication Date |
|---|---|
| CN117431936A true CN117431936A (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311634632.9A Pending CN117431936A (en) | 2023-12-01 | 2023-12-01 | Double-layer integral type internal support rapid assembling method for locking steel pipe pile cofferdam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117431936A (en) |
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2023
- 2023-12-01 CN CN202311634632.9A patent/CN117431936A/en active Pending
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