A method and system for evaluating the performance of foundation pit pile anchor support with extended service

A foundation pit and pile-anchor technology, which is applied in the field of pile-anchor support performance evaluation for overdue foundation pits, can solve problems such as complex environments and threats to the safety of construction personnel and mechanical equipment in foundation pits, and achieve accurate performance evaluation

Active Publication Date: 2022-06-28
CHINA RAILWAY URBAN CONSTR GRP
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Problems solved by technology

[0005] The present invention provides a method and system for evaluating the performance of overdue foundation pit pile-anchor support in consideration of timeliness. Technical issues concerning the safety of construction personnel and machinery and equipment

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  • A method and system for evaluating the performance of foundation pit pile anchor support with extended service
  • A method and system for evaluating the performance of foundation pit pile anchor support with extended service
  • A method and system for evaluating the performance of foundation pit pile anchor support with extended service

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Embodiment Construction

[0089] In order to better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0090] like Figure 1 to Figure 6 As shown, the first embodiment of the present invention proposes a method for evaluating the performance of a pile-anchor support of a foundation pit in overdue service, which includes the following steps:

[0091] Step S100 , according to the triaxial test of the rock and soil mass and the construction project, determine the rheological properties of the soil mass at the project site, the strength reduction of the reinforced concrete of the supporting structure, and the loss of the prestress of the anchor cable.

[0092] Further, step S100 includes:

[0093] In step S110, the rheological properties of the soil mass at the engineering site are obtained through the triaxial compression test of the rock and soil, and the relationship between th...

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Abstract

The invention discloses a method and system for evaluating the performance of foundation pit pile anchor support with extended service, which determines the rheological characteristics of the soil on the project site and the reinforced concrete strength of the support structure according to the triaxial test of the rock and soil mass and the construction project Reduction and loss of anchor cable prestress; according to the rheological characteristics of the engineering site soil, the strength reduction of reinforced concrete of the support structure and the loss of anchor cable prestress, determine the expression of earth pressure and anchor cable prestress over time Combined with the basic assumptions of the foundation pit pile-anchor support model, the deformation coordination relationship between the pile body and the anchor rod is determined; at the same time, the rheological characteristics of the soil and the prestress loss of the anchor cable are considered, and combined with the basic theory of elastic foundation beams, the deduced Evaluation value of anchor support performance of overdue foundation pit piles considering aging. The invention can comprehensively, objectively and accurately evaluate the performance of the temporary foundation pit support structure, and provide a basis for the safe construction of the temporary foundation pit project.

Description

technical field [0001] The invention relates to the technical field of performance evaluation of foundation pit pile-anchor support, and in particular discloses a method and system for evaluating the performance of foundation pit pile-anchor support that considers aging. Background technique [0002] The rapid development of the national economy, the relative scarcity of land resources and the accelerated utilization of underground space have produced a large number of foundation pit projects, and the foundation pit projects are also constantly moving towards large area and large depth in order to meet the needs of various development and use functions. Therefore, in order to meet the construction safety, higher and higher requirements are also put forward for the performance of the foundation pit supporting structure, and the safety of the supporting structure is also more and more important. The pile-anchored foundation pit supporting structure mainly bears the lateral wat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/00G01N3/08E02D33/00
CPCG01N3/00G01N3/08E02D33/00G01N2203/0003G01N2203/0019G01N2203/0218G01N2203/0246G01N2203/0256G01N2203/0676G01N2203/0682
Inventor 张鑫全门彬肖金明马彦征曾乐李东东关劼兮余俊陈伟彬邓鹏兵杨鑫歆张志中
Owner CHINA RAILWAY URBAN CONSTR GRP
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