CN112323853A - Self-adaptive linear underground engineering structure and transverse deformation control method thereof - Google Patents
Self-adaptive linear underground engineering structure and transverse deformation control method thereof Download PDFInfo
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- CN112323853A CN112323853A CN201910752149.8A CN201910752149A CN112323853A CN 112323853 A CN112323853 A CN 112323853A CN 201910752149 A CN201910752149 A CN 201910752149A CN 112323853 A CN112323853 A CN 112323853A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
Abstract
The invention relates to a self-adaptive linear underground engineering structure and a transverse deformation control method thereof in the field of underground linear engineering construction and maintenance, the structure comprises a linear underground engineering structure (1), a self-adjusting bag (6) and a fluid channel (9), wherein the self-adjusting bag (6) is a sealed bag capable of bearing a certain pressure, is led out from the soil body to the operation surface through the fluid channel (9), when the linear underground engineering structure transversely deforms, by injecting a suitable amount of liquid at a moderate pressure into a self-regulating bladder (6) in the earth in the displaced passive area, the invention can control the transverse displacement and deformation of the linear underground engineering structure in real time in the using process of the linear underground engineering structure, and has the advantages of high control precision, low cost, high reliability, high speed and convenient operation.
Description
Technical Field
The invention relates to the field of underground linear engineering construction and maintenance in the field of civil engineering.
Background
The underground linear engineering refers to a long strip hollow underground engineering buried under the ground, and specifically includes underground traffic facilities such as subways and tunnels, various underground municipal pipeline facilities such as underground pipe galleries, tap water pipes, gas pipes, communication, sewage pipes and rainwater pipes, and a water tank half buried under the ground. According to the mutual position relation between the underground linear engineering and the soil body, the surface of the underground linear engineering can be divided into a soil facing surface and a soil backing surface, wherein the soil facing surface refers to the contact surface of the underground linear engineering and the soil body, and the soil backing surface refers to the surface of the underground linear engineering which is not in contact with the soil body. The underground linear engineering has the structural characteristics of large longitudinal (namely along the axial direction of the underground linear engineering) span and small transverse (namely perpendicular to the direction of the underground linear engineering) rigidity. Particularly, when the underground linear engineering is located in a soft soil area, spans different geological conditions or has engineering activities such as foundation pit excavation, pile driving construction, pile loading and the like near the underground linear engineering, the established underground linear engineering is often subjected to larger settlement and uneven settlement, even the engineering problems such as cracking, breaking and the like of the underground linear engineering are caused, and the safety and normal use of the underground linear engineering are seriously influenced. The existing underground linear engineering construction directly buries the underground linear engineering in soil, a small amount of underground linear engineering is buried in soil reinforced by pile foundations or mixing piles, and the transverse deformation control capability is poor due to low transverse rigidity of the underground linear engineering. After the underground linear engineering is transversely deformed, the existing technical processing means are extremely limited, for example, urban subways can only be controlled by grouting into the soil body outside a subway tunnel by taking the interior of the subway as a construction operation surface, and the subway tunnel transverse deformation control mode has extremely high manufacturing cost and poor precision and can not radically solve the fundamental problem of the transverse deformation of the subway tunnel.
Disclosure of Invention
The first purpose of the invention is to provide a self-adaptive linear underground engineering structure, which can conveniently adjust and control the self transverse deformation in the construction process or the construction operation and maintenance process, and has strong engineering adaptability, high deformation control precision and low cost.
The self-adaptive linear underground engineering structure consists of a linear underground engineering structure, a self-adjusting bag and a fluid channel, wherein the linear underground engineering structure is a structure which is buried in soil and can provide linear space for underground linear engineering, the self-adjusting bag is a bag-shaped body which is arranged on the soil facing surface of the linear underground engineering structure and has sealing performance, and the fluid channel is a fluid channel which leads the self-adjusting bag to an operation surface.
The second purpose of the invention is to provide a lateral deformation control method for a self-adaptive linear underground engineering structure, which can adjust and control the lateral deformation of the linear underground engineering structure in real time and ensure that the linear underground engineering structure is in a normal use state.
The transverse deformation control method of the self-adaptive linear underground engineering structure comprises the following steps:
a) measuring the transverse deformation direction and the transverse deformation magnitude of the self-adaptive linear underground engineering structure, and determining the transverse displacement direction of the self-adaptive linear underground engineering structure;
b) determining a passive region of a soil body at the periphery of the self-adaptive linear underground engineering structure according to the transverse displacement direction of the self-adaptive linear underground engineering structure;
c) injecting fluid into a self-adjusting bag buried in the passive area soil body range of the self-adaptive linear underground engineering structure through a fluid channel;
d) adjusting the injection pressure and injection amount of the fluid in blocks, providing counter force by the soil body of the passive region, and resetting the transversely-shifted self-adaptive linear underground engineering structure;
e) and in the process of resetting the self-adaptive linear underground engineering structure or after the resetting target is reached, solid particles or fluid capable of being solidified into solid are injected into the self-adjusting bag through the fluid channel, and the fluid in the self-adjusting bag is partially or completely replaced.
The self-adaptive linear underground engineering structure and the transverse deformation control method thereof can control the transverse displacement and deformation of the underground linear structure in real time in the using process of the underground linear structure, and have the advantages of high control precision, low cost, high reliability, high speed and convenience in operation.
Drawings
FIG. 1 is a schematic cross-sectional diagram illustrating the positions of an adaptive linear underground structure before and after transverse deformation according to an embodiment of the present invention;
FIG. 2 is a partial detail view of a cross section of an earth-facing surface of a displacement passive zone of an adaptive linear underground structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing a comparison between the positions before and after the lateral deformation of an adaptive linear underground structure according to an embodiment of the present invention;
FIG. 4 is a detail view of a longitudinal section of an earth-facing surface of a displacement passive zone of an adaptive linear underground structure according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of an adaptive linear underground structure after lateral deformation and restoration according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the structure of the adaptive linear underground structure in longitudinal section after the structure is transversely deformed and restored according to an embodiment of the present invention;
Detailed Description
The following describes an adaptive linear underground engineering structure and a lateral deformation control method thereof according to the present invention with reference to fig. 1 to 6 as an embodiment of the present invention. Firstly, an adaptive linear underground engineering structure of the invention is described with reference to fig. 1 to 4. The self-adaptive linear underground engineering structure comprises a linear underground engineering structure (1), a self-adjusting bag (6) and a fluid channel (9), wherein the linear underground engineering structure (1) is a structure which is buried in a soil body and can provide a linear space for underground linear engineering, the self-adjusting bag (6) is a bag-shaped body which is arranged on the soil facing surface of the linear underground engineering structure (1) and has sealing performance, and the fluid channel (9) is a fluid channel (9) which leads the self-adjusting bag (6) to an operation surface. The linear underground engineering structure (1) in the embodiment can be a subway tunnel, an urban pipe gallery, various underground pipelines or channels and the like. The following part of this embodiment, with reference to fig. 1 to 6, further describes the working principle of an adaptive linear underground engineering structure and its lateral deformation control method according to the present invention. The linear underground engineering structure (1) is easy to be out of line and transversely deform in the process of construction and use due to small transverse rigidity and large span. The most common problems of transverse deformation include vertical settlement and horizontal displacement, and the uneven transverse deformation often causes disasters such as cracking, water seepage and the like of the linear underground engineering structure (1), thereby seriously affecting the normal use of the linear underground engineering structure (1). After the linear underground engineering structure (1) is transversely displaced, the phenomenon as shown in fig. 1 to 4 can occur. As shown in fig. 1 and 3, in the present embodiment, the linear underground engineering structure (1) sinks at a local section position due to vertical settlement, before the sinking, the position of the linear underground engineering structure (1) in the soil body is as shown in the structural position (2) before the transverse deformation in fig. 1 and 3, and the ground position (4) before the transverse deformation is compared with the ground position (3) after the transverse deformation in fig. 1 and 3. Aiming at the local subsidence area, the self-adaptive linear underground engineering structure transverse deformation control method can be adopted for reset treatment. In the first step of the embodiment, the transverse deformation direction and the transverse deformation magnitude of the linear underground engineering structure (1) are measured, and the transverse displacement direction of the linear underground engineering structure (1) is determined, in the embodiment, the settlement value of the linear underground engineering structure (1) is mainly measured. Namely, the displacement between the linear underground structure (1) and the structure position before transverse deformation (2) as shown in fig. 1 and 3 is measured. And finishing the first step and entering the second step. In this step, the peripheral soil passive area of the linear underground engineering structure (1) is determined according to the transverse displacement direction of the linear underground engineering structure (1), in this embodiment, the transverse deformation of the linear underground engineering structure (1) is mainly represented by settlement, and the linear underground engineering structure (1) moves downward, so that the soil area below the linear underground engineering structure (1) is the peripheral soil passive area, and simultaneously, the contact surface between the lower part of the linear underground engineering structure (1) and the soil is determined as the passive area soil facing surface (5), as shown in fig. 2 and 4. In fig. 2 and 4, the inner side surface of the linear underground structure (1) can be used as an operation surface (7), the fluid channel (9) passes through the linear underground structure (1) during construction, and the port is positioned in the operation surface (7). In the step, after the linear underground engineering structure (1) is built, the self-adjusting bag (6) and the fluid channel (9) can be embedded on the periphery of the linear underground engineering structure facing the soil. And finishing the second step and entering the third step. Fluid is injected into the self-adjusting bag (6) buried in the soil body range of the passive area of the self-adaptive linear underground engineering structure (1) through the fluid channel (9), in the embodiment, the cross section of the linear underground engineering structure (1) is circular, and a plurality of self-adjusting bags (6) can be arranged along the circumference, so that different positions can be reset according to different requirements. Multiple layers of self-adjusting bladders (6) may also be provided for multiple reset uses. And finishing the third step and entering the fourth step. In the step, according to the requirements of different positions and different reset displacement amounts, the injection pressure and the injection amount of the fluid are adjusted by blocks, and the linear underground engineering structure (1) which is transversely shifted is reset by providing counter force by the soil body of the passive region. The fluid injection amount is determined according to the reset displacement, the injection pressure is determined according to mechanical calculation, and the fluid injection amount and the injection pressure can be controlled according to the principle that the same cross section is synchronous and different cross sections are deformed and coordinated. And finishing the fourth step and entering the fifth step. In this step, the linear underground engineering structure (1) is restored under the combined action of the fluid pressure in the self-adjusting bags (6) by the counterforce provided by the soil in the passive area, the restoration displacement amount can be determined according to the engineering requirements, and the position of the restored linear underground engineering structure (1) is as shown in fig. 5 and 6. In order to avoid the risk that the later fluid flows out of the self-adjusting bag (6) to cause the linear underground engineering structure (1) to be transversely displaced again in the resetting process or after the resetting target is reached, solid particles or fluid capable of being solidified into solid can penetrate into the self-adjusting bag (6) through the fluid channel (9), the fluid in the self-adjusting bag (6) is partially or completely replaced, and a resetting filling area (8) shown in figures 6 and 5 is formed below the linear underground engineering structure (1). The solid particles may be sand and the settable fluid may be cement, mortar or other building material. In the replacement process of the step, the mode of replacing or maintaining the pressure in the self-adjusting sac bags (6) one by one can be used for ensuring the safety and stability of the linear underground engineering structure (1) in the replacement process. Therefore, the transverse deformation control of the self-adaptive linear underground engineering structure is completed.
This patent includes, but is not limited to, other construction methods that may be substituted by those skilled in the art.
Claims (2)
1. A self-adaptive linear underground engineering structure is characterized by comprising a linear underground engineering structure (1), a self-adjusting bag (6) and a fluid channel (9), wherein the linear underground engineering structure (1) is a structure which is buried in soil and can provide linear space for underground linear engineering, the self-adjusting bag (6) is a bag-shaped body which is arranged on the soil facing surface of the linear underground engineering structure (1) and has sealing performance, and the fluid channel (9) is a fluid channel which leads the self-adjusting bag (6) to an operation surface.
2. The lateral deformation control method of the self-adaptive linear underground engineering structure according to claim 1, comprising the following steps:
a) measuring the transverse deformation direction and the transverse deformation magnitude of the self-adaptive linear underground engineering structure (1), and determining the transverse displacement direction of the self-adaptive linear underground engineering structure (1);
b) determining a soil passive area at the periphery of the self-adaptive linear underground engineering structure (1) according to the transverse displacement direction of the self-adaptive linear underground engineering structure (1);
c) fluid is injected into a self-adjusting bag (6) which is buried in the passive area soil body range of the self-adaptive linear underground engineering structure (1) through a fluid channel (9);
d) adjusting the injection pressure and injection amount of the fluid in blocks, providing counter force by the soil body of the passive region, and resetting the transversely-shifted self-adaptive linear underground engineering structure (1);
e) during the restoration process of the self-adaptive linear underground engineering structure (1) or after the restoration target is reached, solid particles or fluid capable of being solidified into solid are penetrated into the self-adjusting bag (6) through the fluid channel (9), and the fluid in the self-adjusting bag (6) is partially or completely replaced.
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| CN201910752149.8A CN112323853A (en) | 2019-08-05 | 2019-08-05 | Self-adaptive linear underground engineering structure and transverse deformation control method thereof |
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| CN201910752149.8A CN112323853A (en) | 2019-08-05 | 2019-08-05 | Self-adaptive linear underground engineering structure and transverse deformation control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492178A (en) * | 2022-11-18 | 2022-12-20 | 山东建筑大学 | Underground structure settlement deformation disease repairing process based on post-expansion bag |
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| CN208056108U (en) * | 2018-03-30 | 2018-11-06 | 云南建投基础工程有限责任公司 | A kind of prefabricated assembled underground pipe gallery depression Disease Treatment structure |
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2019
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Patent Citations (5)
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| JP2005188122A (en) * | 2003-12-25 | 2005-07-14 | Taisei Corp | Shield boring machine and segment and construction method of shield tunnel |
| CN104328782A (en) * | 2014-11-27 | 2015-02-04 | 北京中铁润海科技有限公司 | Expansive pouring device and method for governing railway roadbed sedimentation and deformation |
| CN104652415A (en) * | 2015-02-09 | 2015-05-27 | 郑州安源工程技术有限公司 | Underground pipeline sedimentation repair high polymer membrane bag grouting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115492178A (en) * | 2022-11-18 | 2022-12-20 | 山东建筑大学 | Underground structure settlement deformation disease repairing process based on post-expansion bag |
| CN115492178B (en) * | 2022-11-18 | 2023-03-10 | 山东建筑大学 | Underground structure settlement deformation disease repairing process based on post-expansion bag |
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Application publication date: 20210205 |
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