CN-122013821-A - Underground diaphragm wall decompression pipe, decompression structure, deformation regulation and control method and system

CN122013821ACN 122013821 ACN122013821 ACN 122013821ACN-122013821-A

Abstract

The invention provides a diaphragm wall decompression tube, a decompression structure, a deformation regulation and control method and a system, wherein the diaphragm wall decompression structure is composed of a plurality of diaphragm wall decompression tubes which are sequentially arranged along the extending direction parallel to the side wall of the diaphragm wall, the underground diaphragm wall decompression pipe is longitudinally arranged straight, and the underground diaphragm wall decompression structure formed by a plurality of underground diaphragm wall decompression pipes can play a role in decompressing and reducing wall deformation of the wall of the underground diaphragm wall. The underground diaphragm wall deformation regulation and control method and system adopt a reliability theory to quantify the influence of the random change of the water level and the effectiveness of the decompression structure of the underground diaphragm wall, have small reliability calculation error, determine regulation and control instructions based on the system reliability, and control the action of a drainage system and a valve of the foundation pit based on the regulation and control instructions, thereby draining accumulated water in the foundation pit, regulating the water level and realizing the aim of accurately regulating and controlling the deformation of the underground diaphragm wall.

Inventors

XIE KEWEI
XU ZAN
DENG CHENGHONG
TIAN SHUYU
ZHANG DUOXIN
MEI GUOJUN
XUE YUNZHI
DONG YIRU

Assignees

中铁碧源水务昆明有限公司
中铁开发投资集团有限公司
华北水利水电大学
同济大学

Dates

Publication Date: 20260512
Application Date: 20260104

Claims (12)

1. The underground diaphragm wall decompression pipe is characterized by comprising a plurality of single pipes which are coaxially connected, wherein two adjacent single pipes are connected in a sealing way through a flexible joint; The single pipe is provided with a drain hole, and a valve is arranged on the drain hole.
2. The underground diaphragm wall pressure relief pipe of claim 1, wherein said flexible joint comprises a socket rubber ring flexible joint.
3. The underground diaphragm wall pressure reducing pipe of claim 1, wherein at least one end of the underground diaphragm wall pressure reducing pipe is provided with a filter end cap.
4. The underground diaphragm wall pressure reducing pipe of claim 1, wherein the single pipe is a double-wall corrugated pipe.
5. The underground diaphragm wall decompression structure is characterized in that the underground diaphragm wall decompression structure is arranged in soil body outside the underground diaphragm wall along the extending direction parallel to the side wall of the underground diaphragm wall, the underground diaphragm wall decompression structure comprises at least one layer of decompression units, each layer of decompression unit comprises a plurality of underground diaphragm wall decompression pipes according to any one of claims 1-4, the plurality of underground diaphragm wall decompression pipes are sequentially arranged along the extending direction parallel to the side wall of the underground diaphragm wall, and the underground diaphragm wall decompression pipes are longitudinally arranged to be straight.
6. A method for regulating deformation of an underground diaphragm wall, characterized in that the regulating method is used for regulating deformation of the underground diaphragm wall provided with the underground diaphragm wall decompression structure according to claim 5 in soil, and the regulating method comprises the following steps: acquiring monitoring parameters, wherein the monitoring parameters comprise soil parameters, real-time water level and real-time water pressure at preset points inside and outside a foundation pit and deformation parameters of the underground diaphragm wall decompression tube; Inputting the monitoring parameters into a preset wall response prediction model to obtain a wall response prediction value of the underground continuous wall in a preset time period in the future; calculating the system reliability of the underground continuous wall in the current state based on the wall response predicted value; determining a regulation command based on the system reliability; And controlling the action of a drainage system and a valve of the foundation pit based on the regulation and control instruction.
7. The method for regulating deformation of a diaphragm wall according to claim 6, wherein the wall response prediction model is obtained by training a long-term memory network LSTM, a random forest, or a neural network.
8. The method of claim 6, wherein before inputting the monitoring parameters into a preset wall response prediction model, the method further comprises: and preprocessing the monitoring parameters, wherein the preprocessing comprises data cleaning, time sequence alignment and normalization processing.
9. The method for controlling deformation of a diaphragm wall according to claim 6, the wall response predicted value comprises a displacement time course predicted value.
10. The method of claim 9, wherein calculating the system reliability of the diaphragm wall in the current state based on the wall response prediction value, comprises: Solving a probability density evolution equation by taking the displacement time interval predicted value as an object to obtain a displacement probability density curved surface; And extracting a displacement extremum from the displacement probability density curved surface, and calculating the system reliability of the underground continuous wall in the current state by combining with an extremum distribution theory, wherein the system reliability comprises a reliability index beta or failure probability P f .
11. The method of claim 6, wherein determining the control command based on the system reliability comprises: and determining a regulation instruction corresponding to the system reliability by looking up a table from a preset regulation instruction table.
12. A deformation control system of an underground diaphragm wall is characterized in that the control system is used for performing deformation control on the underground diaphragm wall provided with the underground diaphragm wall decompression structure according to claim 5 in soil, the control system comprises a sensing layer, a decision layer and an execution layer, The sensing layer is configured to acquire soil parameters, real-time water level and real-time water pressure at preset points inside and outside a foundation pit and deformation parameters of the underground diaphragm wall decompression tube; The decision layer is configured to input the soil body parameters, the real-time water level and the real-time water pressure at the preset points inside and outside the foundation pit and the deformation parameters of the underground diaphragm wall decompression tube into a preset wall response prediction model to obtain a wall response prediction value of the underground diaphragm wall in a preset time period in the future; The execution layer is configured to control the drainage system and valve action of the foundation pit based on the regulation and control instructions.

Description

Underground diaphragm wall decompression pipe, decompression structure, deformation regulation and control method and system Technical Field The application relates to the technical field of geotechnical engineering, in particular to a decompression pipe, a decompression structure, a deformation regulation and control method and a deformation regulation and control system of an underground continuous wall. Background The underground diaphragm wall is a common deep foundation pit supporting structure and is mainly used for providing soil retaining and waterproof functions in foundation pit engineering. Foundation pit is an earth excavation project for constructing underground facilities, and a supporting structure is required in the construction process to ensure slope stability and surrounding safety. The underground diaphragm wall is directly used as a support system of a foundation pit by forming a continuous underground wall body, is suitable for various soil layers and groundwater conditions, and can effectively reduce the influence on adjacent structures especially in dense areas of buildings. The construction of underground diaphragm walls (diaphragm walls) is typically performed prior to excavation of the foundation pit as part of the foundation pit enclosure. The construction method is constructed along the peripheral axis of the foundation pit to form a continuous reinforced concrete wall, and mainly plays roles of supporting, water stopping and bearing, and provides a safe and stable environment for the subsequent excavation of the foundation pit. In concrete construction, the construction process of the underground continuous wall comprises the steps of deep groove excavation, slurry wall protection, reinforcement cage placement, concrete pouring and the like, and the earthwork excavation and the internal structure construction of the foundation pit are only carried out after the construction is completed. Therefore, the diaphragm wall is an early key link of foundation pit engineering. When deep foundation pit excavation is carried out in lakeside areas, coastal areas and the like, the groundwater level is influenced by factors such as tides, rainfall and the like, the water level change is frequent and severe, complex water-soil-ground wall structure interaction is easy to be initiated, and serious threat is formed to the stability and reliability of the underground continuous wall. Disclosure of Invention The invention aims to provide a decompression tube, a decompression structure, a deformation regulation and control method and a deformation regulation and control system for an underground diaphragm wall, so as to solve the problems that the underground diaphragm wall in the prior art lacks the decompression structure of the underground diaphragm wall, reliability evaluation is inaccurate, and deformation of the underground diaphragm wall cannot be actively regulated and controlled. In order to achieve the above object, in a first aspect, the present invention provides an underground diaphragm wall decompression tube, where the underground diaphragm wall decompression tube includes a plurality of single tubes connected coaxially, and two adjacent single tubes are connected in a sealing manner through a flexible joint; The single pipe is provided with a drain hole, and a valve is arranged on the drain hole. Further, the flexible joint comprises a socket rubber ring flexible joint. Further, at least one end of the underground diaphragm wall decompression pipe is provided with a filtering end cover. Further, the single tube is a double-wall corrugated tube. In a second aspect, the present invention further provides a diaphragm wall decompression structure, where the diaphragm wall decompression structure is disposed in a soil body outside the diaphragm wall along a direction parallel to an extension direction of a diaphragm wall side wall, the diaphragm wall decompression structure includes at least one layer of decompression units, each layer of decompression units includes a plurality of diaphragm wall decompression pipes according to the first aspect, the plurality of diaphragm wall decompression pipes are sequentially arranged along the direction parallel to the extension direction of the diaphragm wall side wall, and the diaphragm wall decompression pipes are vertically straight. In a third aspect, the present invention also provides a method for controlling deformation of an underground diaphragm wall, the method being used for controlling deformation of an underground diaphragm wall provided with the underground diaphragm wall decompression structure according to the second aspect in a soil body; the regulation and control method comprises the following steps: acquiring monitoring parameters, wherein the monitoring parameters comprise soil parameters, real-time water level and real-time water pressure at preset points inside and outside a foundation pit and deformation parameters of the