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CN-121992795-A - Building foundation pit supporting structure and construction method

CN121992795ACN 121992795 ACN121992795 ACN 121992795ACN-121992795-A

Abstract

The invention discloses a building foundation pit supporting structure and a construction method, which relate to the technical field of foundation pit construction and comprise a supporting plate, one end of the supporting plate is hinged with a supporting base, the support base is attached to the side face of the foundation pit, the clamping seat is attached to the bottom face of the foundation pit, one end of the support base is fixedly connected with the clamping seat, and a plurality of groups of sliding grooves are formed in the surface of the clamping seat. According to the folding plate disclosed by the invention, the rubber air bags are driven to extrude through the two groups of interlayer blocks, and the extruded rubber air bags extrude the interlayer air bag blocks to outwards move and deform, so that the interlayer air bag blocks are clung to the outer surfaces of the support columns, and therefore, the closer the support columns slide along the sliding grooves, the more stable the positioning pressure of the support columns is clamped by the interlayer air bag blocks, and the stability of the foundation pit adapting to the surfaces of foundation pits with different angles is further improved.

Inventors

  • Jing Yongfei
  • LIU WEI

Assignees

  • 济南市工程质量与安全中心

Dates

Publication Date
20260508
Application Date
20231204

Claims (10)

  1. 1. The building foundation pit supporting structure comprises a supporting plate and is characterized in that one end of the supporting plate is hinged with a supporting base, one end of the supporting base is fixedly connected with a clamping seat, a plurality of groups of sliding grooves are formed in the top of the clamping seat, an arc-shaped beam-converging assembly is arranged at the top of the clamping seat, and the arc-shaped beam-converging assembly is connected with the supporting plate; The utility model provides a sliding type air bag device, including multiunit all swing joint has the support column in the spout, fixedly connected with slides the gasbag board in the spout, the top sliding connection of sliding the gasbag board has the pressure board, the bottom fixedly connected with of pressure board connects the baffle, connect the quantity of baffle and be two sets of, another group connect baffle fixed connection at the top of sliding the gasbag board, two sets of connect articulated between the baffle have the folding board, the one end of folding board articulates there is the cavity slide bar, the inside sliding connection of cavity slide bar has the transmission pole, fixedly connected with multiunit spring assembly between transmission pole and the connection baffle, the one end fixedly connected with intermediate layer piece of folding board, the one end fixedly connected with gasbag layer of intermediate layer piece.
  2. 2. The building foundation pit supporting structure according to claim 1, wherein the arc-shaped beam-converging assembly comprises a first arc-shaped plate, the top of the clamping seat is fixedly connected with the first arc-shaped plate, a sliding cavity is formed in the first arc-shaped plate, a second arc-shaped plate is connected in the sliding cavity in a sliding mode, and a buffer spring is fixedly connected between the second arc-shaped plate and the first arc-shaped plate.
  3. 3. The building foundation pit supporting structure according to claim 1, wherein the air bag layer comprises an interlayer air bag block, the interlayer air bag block is fixedly connected with the interlayer block, the upper end and the lower end of the interlayer air bag block are fixedly connected with rubber air bags, and the rubber air bags are fixedly connected with one end of the interlayer block.
  4. 4. A building foundation pit supporting structure according to claim 3, wherein the side of the interlayer air bag block facing the supporting column is an arc surface, and the interlayer air bag block is arranged in a protruding state by extrusion of two groups of rubber air bags.
  5. 5. The building foundation pit supporting structure according to claim 1, wherein a pushing rod is fixedly connected to the top end of the supporting column, a first rotating ball is hinged to the top end of the pushing rod, the first rotating ball is hinged to the supporting plate, a sliding pushing block is slidably connected to the inside of the supporting column, and a second telescopic rod is hinged to one end of the sliding pushing block.
  6. 6. The building foundation pit supporting structure according to claim 1, wherein one end of the second telescopic rod is slidably connected with a first telescopic rod, one end of the first telescopic rod is hinged with a second rotating ball, the second rotating ball is hinged at one end of the supporting plate, and one side of the first telescopic rod is fixedly connected with a sponge frame.
  7. 7. The building foundation pit supporting structure according to claim 6, wherein the bottom of the sponge frame is fixedly connected with a pressing column, the bottom of the pressing column is fixedly connected with a pushing plate, the bottom of the pushing plate is fixedly connected with a plurality of groups of clamping inserting rods, and a plurality of groups of clamping inserting rods are slidably connected to one end of the pressure plate through sliding grooves formed in the surface of the pressure plate.
  8. 8. The building foundation pit supporting structure according to claim 1, wherein a drain hole is formed at one end of the supporting plate.
  9. 9. The building foundation pit supporting structure according to claim 1, wherein the transmission cavity is formed in the support column, a plurality of groups of positioning plates are fixedly connected to the inner wall of the support column, the plurality of groups of positioning plates are located at two ends of the sliding pushing block, one end of each positioning plate is fixedly connected with a spring frame, one end of each spring frame is fixedly connected with a base plate, and the base plates are attached to two ends of the sliding pushing block.
  10. 10. A construction method for supporting a building foundation pit, which adopts the structure for supporting a building foundation pit according to any one of claims 1 to 9, comprising the following steps: s1, excavating a foundation pit, flattening the bottom wall and the side wall of the excavated foundation pit, and adjusting the angles of the bottom wall and the side wall; S2, attaching a support base to the side surface of the foundation pit, wherein one side of the support base is attached to the bottom wall of the foundation pit; s3, attaching the clamping seat to the bottom side of the foundation pit, and attaching one side of the clamping seat to the bottom wall of the foundation pit; s4, turning the supporting plate upwards relative to the clamping seat and opening until the supporting plate abuts against the side wall of the foundation pit; s5, sliding the support column in the chute, fixing the push rod on the support column, and hinging the push rod with a first rotating ball which is hinged on the support plate to realize the support of the support column by the rotating angle of the support column; S6, placing a sliding push block in a support column, enabling the sliding push block to be hinged with a second telescopic rod, enabling the second telescopic rod to be connected with a first telescopic rod in a sliding mode, enabling the first telescopic rod to be hinged with a second rotary ball, enabling the second rotary ball to be hinged with one end of a support plate, enabling a sponge frame to be fixed on the first telescopic rod, enabling a lower pressing column to be fixed at the bottom of the sponge frame, enabling a push plate to be arranged at the bottom end of the lower pressing column, enabling a plurality of groups of clamping inserting rods to be fixed at the bottom end of the push plate, and enabling the plurality of groups of clamping inserting rods to slide in sliding grooves formed in the surface of a pressure plate; And S7, sequentially installing a plurality of support columns, wherein a plurality of support columns which are sequentially adjacent form a support system.

Description

Building foundation pit supporting structure and construction method Technical Field The invention relates to the technical field of foundation pit construction, in particular to a building foundation pit supporting structure and a construction method. Background A foundation pit refers to a space below the ground excavated for the construction of a foundation of a building (including a structure) and a basement, and is applied to a construction engineering, while a pit is excavated at a foundation design position according to the elevation of the foundation and the planar size of the foundation. Before excavation, the excavation scheme is determined according to geological hydrologic data and the conditions of buildings nearby the site, waterproof drainage work is carried out, and a slope can be laid by a person with a non-deep excavation, so that the soil slope is stable. The chinese patent of application No. cn202211133258.X discloses a construction safety supporting structure of building foundation pit, including multiunit supporting structure, every group supporting structure all includes bottom plate and backup pad, be provided with first elastic plate between bottom plate and the backup pad, one side of first elastic plate is dismantled and is connected on the bottom plate, and the opposite side is dismantled and is connected in the backup pad, be provided with on the bottom plate and be used for driving the supporting mechanism that the backup pad of different angles supported to the foundation pit lateral wall, adjacent be provided with the second elastic plate between the backup pad of supporting structure, one side of second elastic plate is dismantled and is connected in one side backup pad, and the opposite side is dismantled and is connected in the opposite side backup pad, be provided with the fixed establishment who is used for fixing the bottom plate to on the foundation pit diapire on the bottom plate, this patent has the advantage that improves the foundation pit supporting effect to different shapes. The existing building foundation pit supporting structure has the advantages that the supporting rods have only supporting effect and no buffering effect in the supporting process, and the supporting structure cannot buffer the collapse impact force according to different conditions when the foundation pit collapses, so that the problems are solved by the building foundation pit supporting structure and the construction method, and the side slopes are prevented from deforming and collapsing when the foundation pit collapses. Disclosure of Invention The invention aims to solve the problem that in the background art, a supporting rod adjusts a clamping position through sliding in a sliding groove, and if the supporting rod slides out of the sliding groove, a foundation pit is easy to collapse, and provides a building foundation pit supporting structure and a construction method. The technical scheme of the invention is that the building foundation pit supporting structure comprises a supporting plate, wherein one end of the supporting plate is hinged with a supporting base, one end of the supporting base is fixedly connected with a clamping seat, and the top of the clamping seat is provided with a plurality of groups of sliding grooves; The sliding airbag device comprises a plurality of groups of sliding grooves, wherein supporting columns are movably connected in the sliding grooves, sliding airbag plates are fixedly connected in the sliding grooves, a pressure plate is slidably connected to the top ends of the sliding airbag plates, connecting guide plates are fixedly connected to the bottom ends of the pressure plates, the number of the connecting guide plates is two, the other group of the connecting guide plates are fixedly connected to the top ends of the sliding airbag plates, folding plates are hinged between the two groups of the connecting guide plates, one end of each folding plate is hinged with a hollow sliding rod, a transmission rod is slidably connected in the hollow sliding rod, a plurality of groups of spring assemblies are fixedly connected between the transmission rod and the connecting guide plates, an interlayer block is fixedly connected to one end of each folding plate, and an airbag layer is fixedly connected to one end of each interlayer block; the clamping seat top is provided with an arc-shaped beam-converging assembly, and the arc-shaped beam-converging assembly is connected with the supporting plate. Preferably, the arc-shaped beam-converging assembly comprises a first arc-shaped plate, the top of the clamping seat is fixedly connected with the first arc-shaped plate, a sliding cavity is formed in the first arc-shaped plate, a second arc-shaped plate is connected in the sliding cavity in a sliding mode, a buffer spring is fixedly connected between the second arc-shaped plate and the first arc-shaped plate, and the buffer spring only has elasticity for the second a