CN-122013781-A - Underground continuous wall device suitable for complex geological conditions and construction method

CN122013781ACN 122013781 ACN122013781 ACN 122013781ACN-122013781-A

Abstract

The invention relates to the technical field of building construction, in particular to a ground wall connecting device and a construction method suitable for complex geological conditions, the device comprises a reinforcement cage, guide boxes are symmetrically arranged at the two sides of the top and the bottom of the reinforcement cage, the outside of the guide box is provided with a pulley with adjustable extension length, and an adjusting component consisting of a worm wheel, a worm, a threaded sleeve and an adjusting rod is arranged in the box to control the pulley to stretch and retract. The bottom of the guide box is fixedly connected with an installation box, a clamping jaw is connected in the installation box through a first rotating shaft in a rotating way, and a locking assembly comprising 匚 -shaped locking blocks, springs and pushing plates is arranged in the installation box. When the steel bar cage is lowered to the bottom of the tank, the locking assembly automatically releases locking in stages, the clamping jaw is retracted under the action of the torsion spring, and the device is separated from the steel bar cage. The invention has the advantages of protecting the groove wall, automatically centering, stably clamping and automatically unhooking.

Inventors

CHEN XINJIE
YANG JING
BAI JINZHOU
CUI ZHEN
MA JINLONG
HOU JIANLIN
YUE BIN
ZHAO CHENXU
MA WENJING
ZHANG ZHUANGZHUANG
LI HONGSHENG
CHEN QIANGQIANG
QIU SONG
JIN GUOQIANG

Assignees

中铁北京工程局集团有限公司
深圳地铁建设集团有限公司
中铁南方投资集团有限公司

Dates

Publication Date: 20260512
Application Date: 20260407

Claims (9)

1. The underground wall connecting device suitable for the complex geological conditions comprises a reinforcement cage (1) and is characterized in that guide boxes (2) are respectively arranged on two sides of the top and the bottom of the reinforcement cage (1), lifting lugs (3) are symmetrically and fixedly connected to the tops of the two guide boxes (2) located above in the four guide boxes (2), three pulleys (4) are equidistantly arranged on one side, far away from the reinforcement cage (1), of the guide boxes (2), an adjusting component is arranged in the guide boxes (2) and used for adjusting the extending length of the pulleys (4) to enable the pulleys (4) to be attached to the inner wall of a groove, two clamping grooves (6) are fixedly connected to the bottoms of the guide boxes (2), two first rotating shafts (7) are symmetrically and fixedly connected to the interiors of the clamping grooves (6), clamping jaws (8) are fixedly connected to the middle portions of the first rotating shafts (7), the clamping jaws (8) are used for clamping the reinforcement cage (1), locking components are arranged in the interiors of the installation boxes (5), and locking components are used for controlling clamping the clamping jaws (8) and releasing clamping.
2. The ground wall connecting device suitable for the complex geological conditions is characterized in that the adjusting assembly comprises an adjusting rod (9), three adjusting grooves (10) are formed in one side, far away from a reinforcement cage (1), of the guide box (2) at equal intervals, the adjusting rod (9) is arranged in the adjusting grooves (10), spline grooves (11) are formed in the outer wall of the adjusting rod (9), spline teeth (12) are fixedly connected to the inner wall of the adjusting groove (10), the spline teeth (12) are in sliding fit with the spline grooves (11), one end, far away from the reinforcement cage (1), of the adjusting rod (9) is rotationally connected with a pulley (4), a second rotating shaft (13) is rotationally connected to the inner portion of the top end of the guide box (2), three worms (14) are uniformly and fixedly connected to the outer wall of the second rotating shaft (13) along the axial direction, three worm gears (15) are fixedly connected to the inner wall of the guide box (2), the worm gears (15) are meshed with the worms (14), threaded sleeves (16) are fixedly connected to the inner walls of the worm gears (15), the adjusting rod (9) are provided with threads, and the adjusting rod (9) is in threaded connection with the threaded sleeves (16).
3. The underground wall connecting device suitable for complex geological conditions according to claim 2 is characterized in that a third rotating shaft (17) is rotatably connected to the top of the guide box (2), a driving cone pulley (18) is fixedly connected to the bottom of the third rotating shaft (17), a driven cone pulley (19) is fixedly connected to the outer wall of the second rotating shaft (13), the driving cone pulley (18) is meshed with the driven cone pulley (19), and the top end of the third rotating shaft (17) extends out of the guide box (2) and is fixedly connected with a knob (20).
4. The underground wall connecting device and the construction method suitable for the complex geological conditions, which are disclosed in claim 1, are characterized in that the locking assembly comprises 匚 -shaped locking blocks (21), the 匚 -shaped locking blocks (21) are symmetrically arranged in the installation box (5), the 匚 -shaped locking blocks (21) are used for being clamped with the clamping jaws (8) to lock the clamping states of the clamping jaws (8), the middle part of one side of each 匚 -shaped locking block (21) far away from the clamping jaw (8) is fixedly connected with an L-shaped connecting rod (22), T-shaped sliding grooves (23) are symmetrically formed in the installation box (5), the 匚 -shaped locking blocks (21) and the L-shaped connecting rods (22) slide in the T-shaped sliding grooves (23), and the bottoms of the L-shaped connecting rods (22) are fixedly connected with pushing plates (24).
5. The underground diaphragm wall device suitable for complex geological conditions according to claim 4, wherein the top of the push plate (24) is fixedly connected with three guide rods (25), the top ends of the guide rods (25) are in sliding connection with the installation box (5), the top ends of the guide rods (25) are fixedly connected with springs (26), the top ends of the springs (26) are fixedly connected with the inner wall of the installation box (5), the springs (26) are compression springs (26), and the elastic force of the springs (26) is larger than the gravity of the push plate (24) and smaller than the sum of the gravity of the guide box (2) and the gravity of the installation box (5).
6. The wall-connected device suitable for complex geological conditions according to claim 5, wherein, of the four pushing plates (24), the bottom parts of the two pushing plates (24) positioned above are symmetrically and fixedly connected with connecting plates (27), and the bottom ends of the connecting plates (27) are fixedly connected with a guide box (2) positioned below.
7. The underground diaphragm wall device suitable for the complex geological conditions, which is disclosed in claim 4, is characterized in that a torsion spring (28) is arranged on the outer wall of the bottom end of the first rotating shaft (7), one end of the torsion spring (28) is fixedly connected with the first rotating shaft (7), the other end of the torsion spring (28) is fixedly connected with the inner wall of the installation box (5), and the torsion spring (28) always has torsion force for twisting the clamping jaw (8) to enter the clamping groove (6).
8. The wall-connected device suitable for complex geological conditions according to claim 4, wherein the reinforcement cage (1) is composed of a plurality of groups of transverse reinforcement bars (29) and longitudinal reinforcement bars (30), the clamping jaw (8) clamps the longitudinal reinforcement bars (30), and the upper surface of the clamping jaw (8) is tightly attached to the transverse reinforcement bars (29).
9. A construction method of a wall-connecting device, which uses the wall-connecting device as defined in claim 1 and is suitable for complex geological conditions, characterized in that, S1, clamping a reinforcement cage (1) through a locking assembly and clamping jaws (8), so that a guide box (2) and an installation box (5) are positioned on two sides of the reinforcement cage (1); s2, a re-use crane is connected with a lifting lug (3) at the top of the guide box (2), and the reinforcement cage (1) and the ground wall connecting device are lifted through the crane; S3, adjusting the extension length of the pulley (4) through an adjusting assembly, enabling the pulley (4) to be attached to the side wall of the groove, and enabling the reinforcement cage (1) to be located in the middle of the groove in the mode; s4, gradually putting down the lifting rope to enable the reinforcement cage (1) and the ground wall connecting device to move downwards together; and S5, finally, when the local wall connecting device reaches the bottom of the groove, the locking of the clamping jaw (8) is released through the locking assembly, the clamping jaw (8) is retracted into the clamping groove (6), and the local wall connecting device is lifted upwards through the crane.

Description

Underground continuous wall device suitable for complex geological conditions and construction method Technical Field The invention relates to the technical field of building construction, in particular to a diaphragm wall device suitable for complex geological conditions and a construction method. Background The underground continuous wall device is a key component in deep foundation pit engineering and underground continuous wall construction, and is mainly used for forming an underground support or bearing structure under complex geological conditions. The core part of the wall is a reinforcement cage, the reinforcement cage is hoisted and placed into a pre-excavated groove, and concrete is poured into the groove to form a continuous wall. The device and the construction method have important roles in ensuring the stability of the groove wall, the accurate positioning of the wall body and the final structural quality. In the prior art, wall protection slurry is generally poured into the excavated groove before the reinforcement cage is lowered. The main function of the slurry is to form a layer of dense and tough mud skin on the surface of the tank wall so as to balance the formation pressure and maintain the temporary stability of the tank wall. During construction, the reinforcement cage is directly lifted by the crane and is placed into the groove filled with slurry. However, the existing devices and construction methods have obvious disadvantages: Firstly, the reinforcement cage is very easy to scratch with the groove wall in the descending process, and the mud skin serving as a key temporary support is damaged. After the mud skin is damaged, the stability of the local soil body which is not protected is reduced under the action of the hydrostatic pressure of the mud, and the local soil body can be possibly peeled off and blocked, and even the groove wall is collapsed. In addition, the soil or stone that drops may block between steel reinforcement cage and cell wall, causes the steel reinforcement cage unable to descend to the design elevation (i.e. "card cage"), and the soil side of collapsing may partly bury the steel reinforcement cage when serious, forms the engineering accident that is difficult to handle. Meanwhile, the irregular shape of the groove wall caused by scratching can also affect the subsequent concrete pouring quality, so that defects such as mud clamping and hollowness are easily formed in the wall body, and the integral strength and the water stopping effect of the structure are damaged. This drawback is particularly common especially in soft soil geological formations. Secondly, the lowering process of the reinforcement cage in the groove lacks an effective guiding and centering control mechanism, and the reinforcement cage is difficult to ensure to be positioned at the center of the cross section of the groove. This may result in uneven thickness of the protective layer of the reinforcement cage after casting concrete, and portions of the reinforcement may even be exposed outside the concrete body, severely affecting the durability and structural safety of the diaphragm wall. Therefore, it is necessary to provide a new earth-continuous wall device suitable for complex geological conditions to solve the above technical problems. Disclosure of Invention In order to solve the technical problems, the invention provides a diaphragm wall device and a construction method suitable for complex geological conditions. The underground wall connecting device suitable for the complex geological conditions comprises a reinforcement cage and is characterized in that guide boxes are respectively arranged on two sides of the top and the bottom of the reinforcement cage, lifting lugs are symmetrically and fixedly connected to the tops of two upper guide boxes in the four guide boxes, three pulleys are equidistantly arranged on one side, far away from the reinforcement cage, of the guide boxes, an adjusting component is arranged in the guide boxes and used for adjusting the extending length of the pulleys to enable the pulleys to be attached to the inner wall of a groove, an installation box is fixedly connected to the bottom of the guide boxes, two clamping grooves are equidistantly formed on one side, close to the reinforcement cage, of the installation box, a first rotating shaft is symmetrically and rotationally connected to the inside of each clamping groove, clamping claws are fixedly connected to the middle of each first rotating shaft and used for clamping the reinforcement cage, a locking component is arranged in the installation box and used for controlling clamping and releasing the clamping of the clamping claws. The adjusting assembly comprises an adjusting rod, three adjusting grooves are formed in one side, far away from the reinforcement cage, of the guide box at equal intervals, an adjusting rod is arranged in the adjusting grooves, spline grooves are formed in the outer wall of th