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CN-122013753-A - Underground combined structural wall with transverse adjusting joint and construction method thereof

CN122013753ACN 122013753 ACN122013753 ACN 122013753ACN-122013753-A

Abstract

The invention discloses an underground combined structure wall with a transverse adjustable joint and a construction method thereof, which are used for improving fault tolerance and error adaptability of closure construction. The structure wall comprises a standard steel box, a connecting steel box, an adjusting steel box and a corner steel box, wherein the connecting steel box and the adjusting steel box are provided with vertical grooves and rotary joints, the adjusting steel box can be customized according to closure spacing and dislocation conditions, and the transverse position and the angle can be flexibly adjusted through the rotary joints. During construction, a standard steel box is firstly arranged, a connecting steel box is arranged at a closure position, the custom-made adjusting steel box is assembled to complete closure, and finally slurry is poured to fixedly connect the joint, so that the overall rigidity is enhanced. The invention effectively solves the problem of difficult closure due to errors in the traditional process, improves the structural integrity and the connection reliability, and realizes modularized and standardized construction.

Inventors

  • QIAN HAIBO
  • XIA CHANG
  • LIN MEILING
  • ZHOU JUNYU
  • XING ZHIQUAN
  • WEI XINJIANG

Assignees

  • 重鑫岩土技术(上海)有限公司

Dates

Publication Date
20260512
Application Date
20260120

Claims (8)

  1. 1. An underground combined structural wall with a transverse adjusting joint is characterized in that a main body comprises a standard steel box (1), a connecting steel box (2), an adjusting steel box (3), a corner steel box (8) and grouting materials (4); The standard steel box (1), the connecting steel box (2), the adjusting steel box (3) and the corner steel box (8) are steel boxes formed by surrounding steel plates and welding, and the upper end and the lower end of the steel boxes are all open; the end faces of the corner steel box (8) used for connection, the end faces of the standard steel box (1) used for connection and the end faces of the adjusting steel box (3) used for connection with the standard steel box (1) are all provided with joints; vertical grooves (5) are formed in two right-angle positions corresponding to opposite surfaces of the end surface of the joint of the connecting steel box (2), non-through vertical limiting groove holes (51) are formed in the end surface of the connecting steel box (2) in the vertical grooves (5), and rotary joints are inserted into the groove holes (51); The adjusting steel box (3) is provided with vertical grooves (5) at four right angle positions, the vertical grooves (5) are provided with non-through vertical limiting groove holes (51) at the end face of the adjusting steel box (3), and the groove holes (51) are inserted with rotary joints; According to the wall body laying-out circuit, the corner steel boxes (8) are arranged at two ends of any wall of the underground structure wall to be built, the standard steel boxes (1) are oppositely arranged between the corner steel boxes (8), the connecting steel boxes (2) are placed and the adjusting steel boxes (3) are placed according to the distance between the two connecting steel boxes (2) and the dislocation condition, and the rotating joints of the connecting steel boxes (2) are connected with the rotating joints of the adjusting steel boxes (3).
  2. 2. An underground utility structure wall with lateral adjustment joints as defined in claim 1, wherein: The connector type of the standard steel box (1) is a group of female connectors (12) and male connectors (11) which are respectively arranged on the left end wall and the right end wall, and the female connectors (12) and the male connectors (11) of the standard steel box (1) are rotationally symmetrical; the joint types of the corner steel box (8) are female joints (12) and male joints (11), and the female joints and the male joints are in male-female fit connection when the corner steel box is connected with the standard steel box (1); the type of the rotating joint of the adjusting steel box (3) is a group of rotating male joints (6) and rotating female joints (7) which are respectively arranged on the left end wall and the right end wall, and the rotating male joints (6) and the rotating female joints (7) of the adjusting steel box (3) are rotationally symmetrical; The connector type of the connecting steel box (2) is a group of female connectors (12) and male connectors (11) positioned on the end wall of the standard steel box (1) and a group of rotating male connectors (6) and rotating female connectors (7) positioned on the end wall of the adjusting steel box (3), the connector of the end wall of the connecting steel box (2) is in male-female fit connection with the connector of the standard steel box (1), and the rotating connectors of the end wall of the connecting steel box (2) are in male-female fit connection with the rotating connectors of the adjusting steel box (3).
  3. 3. An underground utility structure wall with lateral adjustment joints as defined in claim 2, wherein: The female joint (12) comprises a connecting section and an open cylinder steel member, the open cylinder steel member is connected to the standard steel box (1) and the connecting steel box (2) through the connecting section, the opening of the open cylinder steel member is bonded and sealed by fiber cloth (14), and the female joint (12) of the bottommost layer steel box is welded and sealed at the bottom through a female joint back cover steel plate (15); the rotary female joint (7) comprises a limit connecting section and an open cylinder steel member, wherein the open cylinder steel member is embedded into the vertical groove (5) through the limit connecting section, the limit connecting section is inserted into the vertical groove (5), and a limit piece is arranged at the inner side of the limit connecting section so that the rotary female joint (7) cannot deviate from the vertical groove (5), the opening of the open cylinder steel member is bonded and sealed by fiber cloth (14), and the rotary female joint (7) of the bottommost steel box is welded and sealed at the bottom through a female joint back cover steel plate (15); The male connector (11) comprises a connecting section and an arc limiting member, wherein the arc limiting member is connected with the standard steel box (1) and the connecting steel box (2) through the connecting section; The rotary male connector (6) comprises a limit connecting section and an arc limit member, wherein the arc limit member is embedded into the vertical groove (5) through the limit connecting section, the limit connecting section is inserted into the vertical groove (5), and a limit piece is arranged on the inner side of the limit connecting section so that the rotary male connector (6) cannot deviate from the vertical groove (5); the lower ends of the limit connecting sections of the male connector (11), the female connector (12), the rotary male connector (6) and the rotary female connector (7) are cutting edges.
  4. 4. The underground combined structural wall with the transverse adjusting joint according to claim 1, wherein the connecting steel box (2) and the vertical groove (5) of the adjusting steel box (3) are characterized in that the bottom of the vertical groove (5) of the bottommost steel box is sealed by welding a vertical groove bottom sealing steel plate (52), a groove hole (51) arranged in the vertical groove (5) is vertically and non-through, and part of parent metal is reserved at two ends of the groove hole.
  5. 5. The underground combined structural wall with the transverse adjusting joint according to claim 1, wherein the standard steel boxes (1), the connecting steel boxes (2) and the adjusting steel boxes (3) are connected with each other to form a cavity, grouting pipes (13) are inserted in sections, and the grouting pipes (13) are connected through screws.
  6. 6. An underground composite structural wall with laterally adjustable joints as set forth in claim 3, wherein said fiber cloth (14) is a bi-directional anisotropic composite material having high tensile strength and low shear strength.
  7. 7. The underground combined structural wall with the transverse adjusting joint according to claim 1, wherein the grouting material (4) is a high-strength cement-based grouting material mixture or ultra-high-performance concrete.
  8. 8. A method of constructing a composite structure wall under the ground with a lateral adjustment joint according to any one of claims 1-7, comprising the steps of: step 1, laying out a wall line, and arranging corner steel boxes (8) at two ends of the wall line; Step 2, vertically dividing the wall into a plurality of layers, preparing standard steel boxes (1) required by the bottommost layer, connecting the steel boxes (2), and sealing the female joint (12) of the steel boxes, the rotating female joint (7) and the bottoms of the vertical grooves (5) by adopting welded steel plates; Hoisting the standard steel boxes (1) by using hoisting equipment, oppositely arranging the standard steel boxes (1) from the corner steel boxes (8) at two ends for closure construction, and splicing the standard steel boxes (1) left and right in sequence according to design requirements through socket connection between the male connector (11) and the female connector (12); Step 4, hoisting and connecting the steel box (2) by using hoisting equipment, and butting the standard steel box (1) by using a male connector (11) and a female connector (12); Step 5, customizing and adjusting the steel boxes (3) according to the distance between the two connecting steel boxes (2) and the dislocation condition, lifting and adjusting the steel boxes (3) by adopting lifting equipment, and butt-jointing the steel boxes (2) through a rotary male joint (6) and a rotary female joint (7); Step 6, constructing layer by layer or staggered layer echelon until the design depth of the steel box is reached; step 7, filling grouting material (4) into the inner cavities of the female connector (12), the rotary female connector (7) and the vertical groove (5); Step 8, inserting a grouting pipe (13) into a cavity formed by connecting the standard steel box (1) and the connecting steel box (2) and a cavity formed by connecting the connecting steel box (2) and the adjusting steel box (3), grouting and filling the cavity through the grouting pipe (13); and 9, final setting of the grouting material (4) and finishing the construction process.

Description

Underground combined structural wall with transverse adjusting joint and construction method thereof Technical Field The invention relates to the technical field of underground engineering structures, in particular to an underground combined structure wall with a transverse adjusting joint and a construction method, which are suitable for transverse connection construction of a steel box combined underground continuous wall in underground engineering. Background With the development of underground engineering technology, the underground diaphragm wall taking the steel structure as a main body is gradually popularized and applied in engineering by virtue of the advantages of light dead weight, high rigidity, controllable quality and the like. CN111827264a discloses a method for constructing underground diaphragm wall by utilizing steel caisson technology, its monolithic underground diaphragm wall is formed from several steel caisson components which are connected together in a row, and is sunk section by section, and between the left and right adjacent steel caisson component sections a fore shaft pipe process is adopted. The horizontal connection mode obviously has the problem that the steel boxes at the closure positions cannot be closed due to the fact that construction errors are not considered, horizontal adjustment allowance is not available when the steel boxes at the closure positions are in butt joint, and the combined structure wall cannot be closed and cannot form an integral structure due to errors in the construction process or even after errors are accumulated. The invention optimizes the fore shaft process, ensures that the cavity of the transverse connection joint is kept clean in the sinking process of the combined steel box through the cooperation of the fiber cloth and the back cover steel plate, provides reliable guarantee for the subsequent grouting binding force, effectively solves the problem that the original fore shaft lacks horizontal adjustment allowance by means of the angle-adjustable socket steel member, and remarkably improves the integral rigidity of the underground combined wall body by converting the original hinging stress form into the fixedly connected form through grouting slurry into the transverse connection joint. Disclosure of Invention The invention aims to provide an underground combined structure wall with a transverse adjusting joint and a construction method thereof, which improve the construction fault tolerance and error adaptability in the closure construction process of the underground combined structure wall. The utility model provides an underground combined structure wall of adjustable joint configuration, the main part includes standard steel case 1, connection steel case 2, adjusts steel case 3, corner steel case 8 and grout 4; the standard steel box 1, the connecting steel box 2, the adjusting steel box 3 and the corner steel box 8 are steel boxes formed by surrounding and welding steel plates, and the upper end and the lower end of each steel box are open; the end faces of the corner steel box 8, the end faces of the standard steel box 1, and the end faces of the adjusting steel box 3, which are used for being connected with the standard steel box 1, are all provided with joints; Vertical grooves 5 are formed in two right-angle positions corresponding to opposite surfaces of the end surfaces of the joint of the connecting steel box 2, non-through vertical limiting groove holes 51 are formed in the end surfaces of the connecting steel box 2 in the vertical grooves 5, and rotary joints are inserted into the groove holes 51; The adjusting steel box 3 is provided with vertical grooves 5 at four right angle positions, the vertical grooves 5 are provided with non-through vertical limiting groove holes 51 at the end face of the adjusting steel box 3, and the groove holes 51 are inserted with rotary joints; According to the wall body lofting circuit, the corner steel boxes 8 are arranged at two ends of any wall of the underground structure wall to be built, the standard steel boxes 1 are oppositely arranged between the corner steel boxes 8, the connecting steel boxes 2 are placed immediately before closure, the adjusting steel boxes 3 are customized and placed according to the distance between the two connecting steel boxes 2 and the dislocation condition, and the rotating joints of the connecting steel boxes 2 are connected with the rotating joints of the adjusting steel boxes 3. A construction method of an underground combined structure wall with an adjustable joint configuration comprises the following steps: step 1, laying out a wall line, and arranging corner steel boxes 8 at two ends of the wall line; Step 2, vertically dividing the wall into a plurality of layers, preparing a standard steel box 1 required by the bottommost layer, connecting the steel box 2 and adjusting the steel box 3, and sealing the female joint 12 of the steel box, the rotating fem