CN-224213275-U - Disturbance-proof protection device for existing underground diaphragm wall

Abstract

The utility model discloses an existing underground diaphragm wall anti-disturbance protection device which comprises two rows of cement stirring piles, wherein the two rows of cement stirring piles form two rows of stirring walls, a gap is reserved between the two rows of stirring walls, a blocking mechanism is arranged at the gap to stably connect the two rows of stirring walls, the two rows of cement stirring piles are positioned between a diaphragm wall and a tunnel, soil bodies are arranged between the diaphragm wall and the cement stirring piles and between the tunnel and the cement stirring piles, the tops of the two rows of cement stirring piles are integrally connected with a top reinforcing plate through profile steel, the top reinforcing plate is integrally connected with a lower multilayer reinforcing plate through connecting columns to form a stable blocking device for protection, and the reinforcing plate is matched with the top reinforcing plate to be arranged on the upper part, the middle part and the lower part of the cement stirring piles respectively, so that the integral stability of the blocking device is further enhanced.

Inventors

• Mei Jinhu
• ZHAO LIJUN
• WANG PENGFEI
• SUN FEI
• YU CONGCONG
• HE GUANGHUA
• LI HAIBO
• Gu Zai
• Ke Heda

Assignees

• 杭州萧宏建设环境集团有限公司

Dates

Publication Date

20260508

Application Date

20250604

Claims (8)

1. 1. The utility model provides an existing underground diaphragm wall anti-disturbance protection device, includes two rows of cement stirring stake (1), its characterized in that, two rows cement stirring stake (1) form two rows of stirring walls, have the clearance between two rows of stirring walls, and clearance department sets up blocking mechanism and stably connects two rows of stirring walls, two rows cement stirring stake (1) are located between diaphragm wall (2) and tunnel (3), diaphragm wall (2) with cement stirring stake (1) and tunnel (3) with have soil body (4) between cement stirring stake (1).
2. 2. The disturbance-proof protection device for the existing underground diaphragm wall according to claim 1, wherein the blocking mechanism comprises a steel groove (5), steel (6) and a top reinforcing plate (7), the steel groove (5) is arranged along the axial line direction of the cement mixing pile (1), the steel (6) is arranged in the steel groove (5) and the top of the steel groove (5) is exposed, and the top reinforcing plate (7) and the steel (6) are integrally cast.
3. 3. The disturbance-proof protection device for the existing underground diaphragm wall according to claim 2, wherein the section steel (6) only covers the upper end head of the cement mixing pile (1), and a gap between the section steel and the section steel groove (5) is sealed through concrete pouring.
4. 4. A pre-existing underground diaphragm wall tamper protection arrangement according to claim 3, characterized in that the section steel channel (5) is filled with sand (8) in the lower part of the section steel (6).
5. 5. An existing underground diaphragm wall disturbance-proof protection device according to claim 2, characterized in that a reinforcing plate (9) is further arranged between two rows of the cement mixing piles (1), and the reinforcing plate (9) is connected with the top reinforcing plate (7) through a plurality of spaced connecting columns (10).
6. 6. The disturbance-preventing protector for existing underground diaphragm wall according to claim 5, wherein the side of the reinforcing plate (9) is adapted to the adjacent pile clamping groove of the cement mixing pile (1).
7. 7. An existing underground diaphragm wall disturbance-proof protection device according to claim 5, wherein the reinforcing plate (9) comprises a main plate (11) and reinforcing ribs (12), and the main plate (11) and the reinforcing ribs (12) are integrally cast.
8. 8. The disturbance-preventing protector for existing underground diaphragm wall according to claim 5, wherein the reinforcing plates (9) are provided in at least two groups, respectively at the middle and lower parts of the cement mixing pile (1).

Description

Disturbance-proof protection device for existing underground diaphragm wall Technical Field The utility model belongs to the technical field of building construction, and particularly relates to an existing underground continuous wall anti-disturbance protection device. Background ‌ Is close to the current situation of the comprehensive basement enclosure wall (underground diaphragm wall) when the tunnel is constructed, and a foundation pit is excavated to expose part of the underground diaphragm wall in the construction process. The barrier device is arranged between the underground diaphragm wall and the planned tunnel structure for protection, so that adverse effects of foundation reinforcement, foundation pit support structures and foundation pit excavation on disturbance and the like of the existing underground diaphragm wall are reduced. At present, the protection construction of the underground diaphragm wall is mainly to add a supporting structure and also to add cement stirring piles, but when the tunnel construction is built at the underground diaphragm wall, single-row cement stirring piles are difficult to form effective stable reinforcement, meanwhile, the cement stirring piles often need to pull out inserted section steel during construction, the purpose of the protection construction is to save materials, the stability strength of the protection construction is also reduced, and therefore the underground diaphragm wall is still easy to disturb during tunnel construction. Disclosure of utility model The utility model provides an existing underground diaphragm wall anti-disturbance protection device, wherein the tops of two rows of cement stirring piles are integrally connected with a top reinforcing plate through profile steel, and the top reinforcing plate is integrally connected with a lower multilayer reinforcing plate through a connecting column to form a stable blocking device for protection, so that the problems in the background art are solved. The technical scheme is that the existing underground diaphragm wall anti-disturbance protection device comprises two rows of cement stirring piles, the two rows of cement stirring piles form two rows of stirring walls, a gap is reserved between the two rows of stirring walls, a blocking mechanism is arranged at the gap to stably connect the two rows of stirring walls, the two rows of cement stirring piles are positioned between the underground diaphragm wall and a tunnel, and soil bodies are arranged between the underground diaphragm wall and the cement stirring piles and between the tunnel and the cement stirring piles. Preferably, the blocking mechanism comprises a steel groove, steel and a top reinforcing plate, wherein the steel groove is arranged along the axial lead direction of the cement mixing pile, the steel is arranged in the steel groove, the top of the steel groove is exposed out of the steel groove, and the top reinforcing plate and the steel are integrally cast. Preferably, the section steel only covers the upper end head of the cement mixing pile, and the gap between the section steel and the section steel groove is sealed through concrete pouring. Preferably, the steel section groove is filled with sand at the lower part of the steel section. Preferably, reinforcing plates are further arranged between the two rows of cement stirring piles, and the reinforcing plates are connected with the top reinforcing plates through a plurality of spaced connecting columns. Preferably, the side of the reinforcing plate is matched with the adjacent pile clamping groove of the cement mixing pile. Preferably, the reinforcing plate comprises a main plate and reinforcing rib plates, and the main plate and the reinforcing rib plates are integrally cast. Preferably, the reinforcing plates are at least provided with two groups, and are respectively arranged at the middle part and the lower part of the cement stirring pile. Compared with the prior art, the utility model has the beneficial effects that: 1. two rows of cement stirring stake tops are through shaped steel and top gusset plate body coupling, and top gusset plate and below multilayer gusset plate pass through spliced pole body coupling, form stable separation device and protect. 2. The reinforcing plate cooperates top reinforcing plate to set up in the upper, middle, lower three portion of cement mixing stake separately, further strengthen the holistic stability of separation device. 3. The section steel only covers the upper end of the cement mixing pile, the gap between the section steel and the section steel groove is sealed through concrete pouring, and sand is filled in the lower part of the section steel in the section steel groove, so that materials are saved, and the overall strength of the cement mixing pile is improved. Drawings FIG. 1 is a schematic view of a front cross-sectional structure of the present utility model; FIG. 2 is a schematic top view of a cement mixing pile and a