CN112853980A - Cofferdam steel pipe pile and cofferdam closure deviation rectifying construction method - Google Patents
Cofferdam steel pipe pile and cofferdam closure deviation rectifying construction method Download PDFInfo
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- CN112853980A CN112853980A CN202110013693.8A CN202110013693A CN112853980A CN 112853980 A CN112853980 A CN 112853980A CN 202110013693 A CN202110013693 A CN 202110013693A CN 112853980 A CN112853980 A CN 112853980A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 217
- 239000010959 steel Substances 0.000 title claims abstract description 217
- 238000010276 construction Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 abstract description 2
- 238000010009 beating Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 244000025254 Cannabis sativa Species 0.000 description 3
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- 235000009120 camo Nutrition 0.000 description 3
- 235000005607 chanvre indien Nutrition 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000011487 hemp Substances 0.000 description 3
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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
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- 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
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
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Abstract
The application relates to a cofferdam steel pipe pile and a cofferdam closure deviation rectifying construction method, which relate to the technical field of bridge construction, and because the vertical size of a box-type structure is larger, the steel pipe pile for rectifying the deviation of the steel pipe pile is set into the box-type structure, so that the longitudinal deviation of a closure opening can be effectively adjusted; and then the variable cross-section male locking notch and the variable cross-section female locking notch are engaged to form a variable cross-section water-proof cavity, the variable cross-section shape of the water-proof cavity can be adapted to the transverse posture of the closure opening, and further the transverse deviation of the closure opening can be adjusted, so that after a first box-type steel pipe pile and a second box-type steel pipe pile which are adaptive to the closure opening posture are provided according to the closure opening posture, the first box-type steel pipe pile and the second box-type steel pipe pile are respectively placed at the closure opening, then the variable cross-section male locking notch and the variable cross-section female locking notch are engaged to form the water-proof cavity, and finally the first box-type steel pipe pile and the second box-type steel pipe pile are respectively inserted and driven to a preset elevation, so that the deviation rectification of the steel pipe pile can be realized.
Description
Technical Field
The application relates to the technical field of bridge construction, in particular to a cofferdam steel pipe pile and a cofferdam closure deviation-rectifying construction method.
Background
At present, for the construction of a bridge bearing platform with a low water level, the underwater construction of a bridge foundation and a substructure is mostly carried out in a steel pipe pile cofferdam mode, and the main reasons are that the steel pipe pile cofferdam has the advantages of reliable structural stability, high construction speed, simple process, less required equipment, high section strength, high rigidity, simplicity and convenience in supporting, convenience in operation, high material recovery rate and the like, so that the steel pipe pile cofferdam is widely applied to the construction of the bridge foundation.
However, due to the influence of construction conditions and construction level, in the cofferdam construction process, deviation and even large bidirectional deviation occur when the steel pipe piles are inserted and driven inevitably, so that the construction precision cannot meet the construction requirement, the problem that the cofferdam cannot be normally closed occurs, the conditions that the cofferdam is poor in tightness, water leakage occurs and the like occur, and further the risk that the cofferdam is unstable or collapses due to the destructive effects such as leakage and the like is increased.
In the prior art, deviation rectification of the steel pipe piles is usually performed in a mode that all steel pipe piles with deviations are pulled out and then are driven to preset positions again in an inserting mode, and the method has the problem of low construction efficiency and can seriously affect the construction progress of a bridge.
Disclosure of Invention
The embodiment of the application provides a cofferdam steel pipe pile and a cofferdam closure deviation rectifying construction method, and aims to solve the problem that in the related art, the deviation rectifying construction efficiency of the steel pipe pile is low.
In a first aspect, a cofferdam steel pipe pile is provided, including:
the first box-type steel pipe pile is provided with a variable cross-section female locking notch;
and the second box-type steel pipe pile is provided with a variable cross-section male locking notch, the variable cross-section male locking notch and the variable cross-section female locking notch are occluded to form a water-isolating cavity, and the shape of the water-isolating cavity is adapted to the transverse posture of the closure opening so as to adjust the transverse deviation of the closure opening.
In some embodiments, the variable cross-section female locking notch is a channel steel, and the variable cross-section male locking notch is a T-shaped steel.
The steel pipe pile further comprises a plurality of stiffening plates;
the stiffening plates are respectively arranged at the variable cross-section female lock port of the first box-type steel pipe pile and the variable cross-section male lock port of the second box-type steel pipe pile.
And filling materials are contained in the water-resisting cavity.
In a second aspect, a cofferdam closure deviation rectification construction method is provided, which comprises the following steps:
determining the longitudinal posture and the transverse posture of the closure opening;
respectively providing a first box-shaped steel pipe pile and a second box-shaped steel pipe pile according to the longitudinal posture of the closure opening so as to adjust the longitudinal deviation of the closure opening;
engaging a variable cross-section male locking notch of a first box-type steel pipe pile with a variable cross-section female locking notch of a second box-type steel pipe pile to form a variable cross-section water-resisting cavity, wherein the shape of the variable cross-section water-resisting cavity is adapted to the transverse posture of a closure opening so as to adjust the transverse deviation of the closure opening;
and respectively inserting and driving the first box-shaped steel pipe pile and the second box-shaped steel pipe pile to preset elevations.
In some embodiments, the inserting and driving the first box-shaped steel pipe pile and the second box-shaped steel pipe pile to a preset elevation respectively includes: and respectively inserting and driving the first box-shaped steel pipe pile and the second box-shaped steel pipe pile to preset elevations in an alternative inserting and driving mode.
Before inserting first box steel-pipe pile and second box steel-pipe pile respectively and beating to preset elevation department, still include:
and carrying out mud suction treatment on the riverbed where the cofferdam is located.
After inserting first box steel-pipe pile and second box steel-pipe pile respectively and beating to preset elevation department, still include: and a shoveling and cushioning steel plate is arranged between the ring beam of the cofferdam and the first box-type steel pipe pile.
After inserting first box steel-pipe pile and second box steel-pipe pile respectively and beating to preset elevation department, still include:
and filling filler in a water-proof cavity with a variable cross section formed by meshing the variable cross section male locking notch of the first box-type steel pipe pile and the variable cross section female locking notch of the second box-type steel pipe pile.
And reinforcing plates are arranged at the variable cross-section female lock opening on the inner wall of the first box-type steel pipe pile and at the variable cross-section male lock opening on the inner wall of the second box-type steel pipe pile.
The beneficial effect that technical scheme that this application provided brought includes: the construction efficiency of steel-pipe pile rectifying can be improved to reduce the closure construction degree of difficulty.
The embodiment of the application provides a cofferdam steel pipe pile and a cofferdam closure deviation rectifying construction method, and because the vertical size of a box-type structure is large, the longitudinal deviation of a closure opening can be effectively adjusted by setting the steel pipe pile for rectifying the deviation of the steel pipe pile into the box-type structure; then a water-proof cavity with variable cross section is formed by the occlusion of the male locking notch with variable cross section and the female locking notch with variable cross section, the shape of the variable cross section of the water-proof cavity can be adapted to the transverse posture of the closure notch, further, the transverse deviation of the closure opening can be effectively adjusted, so that after the first box-type steel pipe pile and the second box-type steel pipe pile which are adapted to the closure opening are provided according to the closure opening, respectively placing the box-shaped steel pipe piles at a closure opening, then occluding the variable cross-section male locking opening and the variable cross-section female locking opening to form a variable cross-section water-proof cavity, enabling the variable cross-section shape of the water-proof cavity to be adaptive to the transverse posture of the closure opening, finally respectively inserting and driving a first box-shaped steel pipe pile and a second box-shaped steel pipe pile to preset elevations, can realize rectifying of steel-pipe pile, reduce the degree of difficulty of closure construction, and need not to carry out the plug operation repeatedly with all steel-pipe piles that appear the deviation, improve the efficiency of construction that the steel-pipe pile rectified. Therefore, the construction efficiency of steel-pipe pile rectifying can be improved, and the closure construction difficulty is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cofferdam steel pipe pile provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a first box-type steel pipe pile provided in the embodiment of the present application;
fig. 3 is a front view of a first box-type steel pipe pile according to an embodiment of the present disclosure;
fig. 4 is a side view of a first box-type steel pipe pile according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a second box-type steel pipe pile according to an embodiment of the present application;
fig. 6 is a front view of a second box-type steel pipe pile according to an embodiment of the present disclosure;
fig. 7 is a side view of a second box-type steel pipe pile according to an embodiment of the present disclosure;
fig. 8 is a schematic flow chart of a cofferdam closure deviation rectifying construction method provided in the embodiment of the present application.
In the figure: 1-a first box-type steel pipe pile, 11-a first male locking notch, 12-a variable cross-section female locking notch, 2-a second box-type steel pipe pile, 21-a variable cross-section male locking notch, 22-a second female locking notch, 3-a water insulation cavity, 4-a stiffening plate, 5-a first standard steel pipe pile, 51-a first standard female locking notch, 6-a second standard steel pipe pile, 61-a second standard male locking notch, 7-a closure notch, 8-a ring beam and 9-a steel plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a cofferdam steel pipe pile and a cofferdam closure deviation rectifying construction method, which can solve the problem of low deviation rectifying construction efficiency of the steel pipe pile in the related technology.
Fig. 1 is a schematic structural diagram of a cofferdam steel pipe pile provided by an embodiment of the present application, and the cofferdam steel pipe pile includes a first box-type steel pipe pile 1 and a second box-type steel pipe pile 2, wherein widths of the first box-type steel pipe pile 1 and the second box-type steel pipe pile 2 are both adapted to a longitudinal posture of a closure 7, so as to adjust a longitudinal deviation of the closure 7; referring to fig. 2 to 4, a first box-type steel pipe pile 1 is provided with a first male locking notch 11 on one side and a variable cross-section female locking notch 12 on the other side, the variable cross-section female locking notch 12 is preferably a variable cross-section channel steel, and the first male locking notch 11 is used for being engaged with a first standard female locking notch 51 of a first standard steel pipe pile 5 constructed at a closure notch 7; referring to fig. 5 to 7, one side of the second box-type steel pipe pile 2 is provided with a variable cross-section male locking notch 21, the variable cross-section male locking notch 21 is preferably a variable cross-section T-shaped steel or i-shaped steel, the other side is provided with a second female locking notch 22, the variable cross-section male locking notch 21 is engaged with the variable cross-section female locking notch 12 to form a variable cross-section water-blocking cavity 3, the variable cross-section shape of the water-blocking cavity 3 can be adapted to the transverse posture of the closure 7 to adjust the transverse deviation of the closure 7, and the second female locking notch 22 is used for being engaged with a second standard male locking notch 61 of a second standard steel pipe pile 6 constructed at the closure 7.
The variable cross-section male locking notch 21 and the variable cross-section female locking notch 12 are variable cross-section large-cavity special-shaped locking notches, the first male locking notch 11 of the first box-type steel pipe pile 1 and the second female locking notch 22 of the second box-type steel pipe pile 2 are made of I-shaped steel, and the variable cross-section male locking notch 21 and the variable cross-section female locking notch 12 are arranged in a non-coplanar mode, so that adjustment and inserting driving are facilitated.
Because the inserting and driving deviation occurs in the first standard steel pipe pile 5 and the second standard steel pipe pile 6 which are constructed at the closure 7, the precision of the closure 7 cannot meet the construction requirement, and the problem that the first standard steel pipe pile 5 and the second standard steel pipe pile 6 cannot be normally closed is caused, therefore, the longitudinal dimension and the transverse dimension which are formed after the first box-type steel pipe pile 1 and the second box-type steel pipe pile 2 are engaged with the variable cross section female locking notch 12 through the variable cross section male locking notch 21 are matched with the dimension of the closure 7, and are respectively connected with the first standard steel pipe pile 5 and the second standard steel pipe pile 6 to form a relatively stable structural system, the integrity and the waterproofness of the cofferdam are enhanced, the water-stopping performance of the cofferdam is better, namely the two-way deviation of two sides of the closure 7 is adapted through the locking notch gap and the box-type dimension of the box-type steel pipe pile, and the problem that the standard steel pipe piles on two sides of the closure 7 are relatively large and two-, the cofferdam can be smoothly closed, and the deviation rectification of the first standard steel pipe pile 5 and the second standard steel pipe pile 6 is realized.
The box-type structure is large in vertical size, so that the longitudinal deviation of the closure opening 7 can be effectively adjusted by setting the steel pipe pile for correcting the deviation of the steel pipe pile to be the box-type structure; then, the variable cross-section male locking notch 21 and the variable cross-section female locking notch 12 are meshed to form a variable cross-section water-proof cavity 3, the variable cross-section shape of the water-proof cavity 3 can be adapted to the transverse posture of the closure 7, and further the transverse deviation of the closure 7 can be effectively adjusted, therefore, after the first box-type steel pipe pile 1 and the second box-type steel pipe pile 2 which are adapted to the posture of the closure 7 are provided according to the posture of the closure 7, the first box-type steel pipe pile 1 and the second box-type steel pipe pile 2 are respectively placed at the closure 7, then the variable cross-section male locking notch 21 and the variable cross-section female locking notch 12 are meshed to form the variable cross-section water-proof cavity 3, the variable cross-section shape of the water-proof cavity 3 can be adapted to the transverse posture of the closure, and finally the first box-type steel pipe pile 1 and the second box-type steel pipe pile 2 are respectively inserted and punched to preset elevations, so that the steel pipe pile deviation can be realized, the difficulty of, the possibility of reworking is reduced, the construction period is saved, and the construction efficiency of deviation rectification of the steel pipe pile is improved.
Therefore, the box-type steel pipe pile with the matched size can be provided according to the specific situation of the closure 7, the deviation rectifying effect is obvious, the construction efficiency of steel pipe pile deviation rectifying is effectively improved, the closure construction difficulty is reduced, the box-type steel pipe pile deviation rectifying device can be further suitable for various deviation such as one-way deviation, two-way deviation, smaller deviation and larger deviation of standard steel pipe piles on two sides of the closure 7, and the box-type steel pipe pile deviation rectifying device is wide in application range and high in practicability.
Furthermore, in the embodiment of the present application, the steel pipe pile further includes a plurality of stiffening plates 4, the plurality of stiffening plates 4 are respectively disposed at the variable cross-section female locking notch 12 of the first box-type steel pipe pile 1, the first male locking notch 11, the variable cross-section male locking notch 21 of the second box-type steel pipe pile 2, and the second female locking notch 22, so that the rigidity of the first box-type steel pipe pile 1 and the second box-type steel pipe pile 2 can be enhanced, and a large deformation during pile sinking can be prevented. The stiffening plates 4 may be preferably arranged on the inner walls of the first box-shaped steel pipe pile 1 and the second box-shaped steel pipe pile 2.
Furthermore, in the embodiment of the present application, the water-proof cavity 3 contains a filling material, which is preferably impermeable clay and hemp, to enhance the water-proof performance of the cofferdam.
Referring to fig. 8, an embodiment of the present application further provides a cofferdam closure deviation rectification construction method, including the following steps:
s1: and determining the longitudinal posture and the transverse posture of the closure 7.
Specifically, the longitudinal attitude and the transverse attitude of the closure opening 7 are determined by measuring the inclination, the deviation and the spatial position of the first standard steel pipe pile 5 and the second standard steel pipe pile 6 which are constructed.
S2: and respectively providing a first box-shaped steel pipe pile 1 and a second box-shaped steel pipe pile 2 according to the longitudinal posture of the closure 7 so as to adjust the longitudinal deviation of the closure 7.
Specifically, the widths of the first box-type steel pipe pile 1 and the second box-type steel pipe pile 2 are both adapted to the longitudinal posture of the closure opening 7 so as to adjust the longitudinal deviation of the closure opening 7.
S3: and (3) engaging the variable-section male locking notch 21 of the first box-type steel pipe pile 1 with the variable-section female locking notch 12 of the second box-type steel pipe pile 2 to form a variable-section water-resisting cavity 3, wherein the shape of the variable-section water-resisting cavity 3 is adapted to the transverse posture of the closure opening 7 so as to adjust the transverse deviation of the closure opening 7.
Specifically, a first box-type steel pipe pile 1 and a second box-type steel pipe pile 2 are respectively placed at a closure opening 7; then, the first male locking notch 11 of the first box-type steel pipe pile 1 is occluded with the first standard female locking notch 51 of the first standard steel pipe pile 5 constructed at the closure notch 7, the second female locking notch 22 of the second box-type steel pipe pile 2 is occluded with the second standard male locking notch 61 of the second standard steel pipe pile 6 constructed at the closure notch 7, finally, the variable cross-section male locking notch 21 of the first box-type steel pipe pile 1 is occluded with the variable cross-section female locking notch 12 of the second box-type steel pipe pile 2 to form the variable cross-section water-blocking cavity 3, and the variable cross-section shape of the water-blocking cavity 3 can be adapted to the transverse posture of the closure notch 7 so as to adjust the transverse deviation of the closure notch 7. The variable cross-section female locking notch 12 is preferably a variable cross-section channel steel, and the variable cross-section male locking notch 21 is preferably a variable cross-section T-shaped steel or i-shaped steel.
S4: and respectively inserting and driving the first box-shaped steel pipe pile 1 and the second box-shaped steel pipe pile 2 to preset elevation positions.
Because the vertical size of the box-type structure is larger, the longitudinal deviation of the closure opening 7 can be effectively adjusted by setting the steel pipe pile for correcting the deviation of the steel pipe pile to be the box-type structure; then, the variable cross-section male locking notch 21 and the variable cross-section female locking notch 12 are meshed to form a variable cross-section water-proof cavity 3, the variable cross-section shape of the water-proof cavity 3 can be adapted to the transverse posture of the closure 7, and further the transverse deviation of the closure 7 can be effectively adjusted, therefore, after the first box-type steel pipe pile 1 and the second box-type steel pipe pile 2 which are adapted to the posture of the closure 7 are provided according to the posture of the closure 7, the first box-type steel pipe pile 1 and the second box-type steel pipe pile 2 are respectively placed at the closure 7, then the variable cross-section male locking notch 21 and the variable cross-section female locking notch 12 are meshed to form the variable cross-section water-proof cavity 3, the variable cross-section shape of the water-proof cavity 3 can be adapted to the transverse posture of the closure, and finally the first box-type steel pipe pile 1 and the second box-type steel pipe pile 2 are respectively inserted and punched to preset elevations, so that the steel pipe pile deviation can be realized, the difficulty of, the possibility of reworking is reduced, the construction period is saved, and the construction efficiency of deviation rectification of the steel pipe pile is improved.
Furthermore, in the embodiment of the present application, inserting and driving the first box-shaped steel pipe pile 1 and the second box-shaped steel pipe pile 2 to a preset elevation respectively includes the following steps: the first box-shaped steel pipe pile 1 and the second box-shaped steel pipe pile 2 are respectively inserted and driven to the preset elevation in an alternative inserting and driving mode, wherein the alternative inserting and driving mode can avoid mutual collision caused by the inclination of the steel pipe piles on two sides of the closure opening 7, the safety of the structure is guaranteed, and the problem of deviation caused by collision is prevented.
Further, in the embodiment of the present invention, before inserting and driving the first box-shaped steel pipe pile 1 and the second box-shaped steel pipe pile 2 to the predetermined elevation, the method further includes: the river bed at the position of the cofferdam is subjected to mud suction treatment, the river bed elevation at the position of the closure opening 7 can be reduced, certain guidance is provided, the sinking of the steel pipe pile is assisted through the river bed elevation, and the deviation caused by the sinking can be reduced and the deviation caused by inserting and driving the steel pipe pile is avoided.
Further, in the embodiment of the present invention, after inserting and driving the first box-shaped steel pipe pile 1 and the second box-shaped steel pipe pile 2 to the preset elevation, the method further includes the steps of: a shoveling and cushioning steel plate 9 is arranged between the ring beam 8 of the cofferdam and the first box-shaped steel pipe pile 1, and the shoveling and cushioning steel plate 9 can be used as an inserting and beating supporting point of the first box-shaped steel pipe pile 1, so that the stress safety of the steel pipe pile is ensured.
Further, in the embodiment of the present invention, after inserting and driving the first box-shaped steel pipe pile 1 and the second box-shaped steel pipe pile 2 to the preset elevation, the method further includes the steps of: the variable cross-section water-proof cavity 3 formed by occlusion of the variable cross-section male locking notch 21 of the first box-type steel pipe pile 1 and the variable cross-section female locking notch 12 of the second box-type steel pipe pile 2 is filled with filling materials, and the filling materials are watertight clay and hemp and can enhance the waterproofness of the cofferdam.
Furthermore, in the embodiment of the present application, stiffening plates 4 are disposed at the variable cross-section female locking notch 12 and the variable cross-section male locking notch 11 of the inner wall of the first box-type steel pipe pile 1, and at the variable cross-section male locking notch 21 and the variable cross-section female locking notch 22 of the inner wall of the second box-type steel pipe pile 2, so that the rigidity of the first box-type steel pipe pile 1 and the second box-type steel pipe pile 2 can be enhanced, and the occurrence of large deformation during pile sinking can be prevented.
The cofferdam closure deviation rectifying construction method provided by the embodiment of the application comprises the following specific construction steps: determining the longitudinal attitude and the transverse attitude of the closure opening 7 by measuring the inclination, the deviation and the spatial position of the constructed first standard steel pipe pile 5 and the second standard steel pipe pile 6; respectively providing a first box-type steel pipe pile 1 and a second box-type steel pipe pile 2 according to the longitudinal posture of the closure opening 7 so as to adjust the longitudinal deviation of the closure opening 7; placing the box-shaped steel pipe pile at the position of a designed closure opening 7, and engaging a variable-section male lock opening 21 of the first box-shaped steel pipe pile 1 with a variable-section female lock opening 12 of the second box-shaped steel pipe pile 2 to form a variable-section water-resisting cavity 3 so as to adjust the transverse deviation of the closure opening 7; cleaning a riverbed by using a suction dredge, reducing the riverbed elevation at the closure opening 7, and alternately inserting and driving a first box-type steel pipe pile 1 and a second box-type steel pipe pile 2 until the pile bottom reaches the designed elevation; arranging a landing pad steel plate 9 between a ring beam 8 of the cofferdam and the first box-shaped steel pipe pile 1 to serve as an inserting and driving supporting point of the first box-shaped steel pipe pile 1, and ensuring the stress safety of the steel pipe pile; and filling watertight clay and hemp in the water-resisting cavity 3 with the variable cross section to form a water-resisting piece to finish closure construction.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A cofferdam steel-pipe pile, its characterized in that includes:
the first box-type steel pipe pile (1) is provided with a variable cross-section female locking notch (12);
the second box-type steel pipe pile (2) is provided with a variable cross-section male locking notch (21), the variable cross-section male locking notch (21) is meshed with the variable cross-section female locking notch (12) to form a water insulation cavity (3), and the shape of the water insulation cavity (3) is adapted to the transverse posture of the closure opening (7) so as to adjust the transverse deviation of the closure opening (7).
2. The cofferdam steel pipe pile of claim 1, wherein: the variable cross-section female locking port (12) is a channel steel, and the variable cross-section male locking port (21) is T-shaped steel.
3. The cofferdam steel pipe pile of claim 1, wherein: the steel pipe pile further comprises a plurality of stiffening plates (4);
the stiffening plates (4) are respectively arranged at the variable cross-section female locking port (12) of the first box-type steel pipe pile (1) and the variable cross-section male locking port (21) of the second box-type steel pipe pile (2).
4. The cofferdam steel pipe pile of claim 1, wherein: the water-proof cavity (3) is filled with filling materials.
5. A cofferdam closure deviation rectifying construction method is characterized by comprising the following steps:
determining the longitudinal posture and the transverse posture of the closure opening (7);
respectively providing a first box-shaped steel pipe pile (1) and a second box-shaped steel pipe pile (2) according to the longitudinal posture of the closure (7) so as to adjust the longitudinal deviation of the closure (7);
the variable cross-section male locking notch (21) of the first box-type steel pipe pile (1) and the variable cross-section female locking notch (12) of the second box-type steel pipe pile (2) are meshed to form a variable cross-section water-proof cavity (3), and the shape of the variable cross-section water-proof cavity (3) is adapted to the transverse posture of the closure opening (7) so as to adjust the transverse deviation of the closure opening (7);
and respectively inserting and driving the first box-shaped steel pipe pile (1) and the second box-shaped steel pipe pile (2) to preset elevations.
6. The cofferdam closure deviation rectifying construction method according to claim 5, wherein the inserting and driving of the first box-type steel pipe pile (1) and the second box-type steel pipe pile (2) to a preset elevation respectively comprises: and respectively inserting and driving the first box-type steel pipe pile (1) and the second box-type steel pipe pile (2) to preset elevations in an alternate inserting and driving mode.
7. The cofferdam closure deviation rectifying construction method according to claim 5, wherein before inserting and driving the first box-type steel pipe pile (1) and the second box-type steel pipe pile (2) to a preset elevation respectively, further comprising:
and carrying out mud suction treatment on the riverbed where the cofferdam is located.
8. The cofferdam closure deviation rectifying construction method according to claim 5, wherein after the first box-type steel pipe pile (1) and the second box-type steel pipe pile (2) are respectively driven to a preset elevation, the method further comprises: and a shoveling and cushioning steel plate (9) is arranged between the ring beam (8) of the cofferdam and the first box-type steel pipe pile (1).
9. The cofferdam closure deviation rectifying construction method according to claim 5, wherein after the first box-type steel pipe pile (1) and the second box-type steel pipe pile (2) are respectively driven to a preset elevation, the method further comprises:
and filling filler is filled in the water-proof cavity (3) with the variable cross section formed by the occlusion of the variable cross section male locking notch (21) of the first box-type steel pipe pile (1) and the variable cross section female locking notch (12) of the second box-type steel pipe pile (2).
10. The cofferdam closure deviation rectifying construction method according to claim 5, characterized in that: and stiffening plates (4) are arranged at the variable cross-section female locking notch (12) on the inner wall of the first box-type steel pipe pile (1) and the variable cross-section male locking notch (21) on the inner wall of the second box-type steel pipe pile (2).
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