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Visualized analysis method for permanent component stand column differential sedimentation under inverse frame condition

A technique of differential sedimentation, analytical method

Active Publication Date: 2014-06-25
上海市岩土工程检测中心有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For super-large deep foundation pit projects, from the perspective of construction site information monitoring and early warning, conventional permanent structure column monitoring generally only provides two important data indicators of cumulative settlement and daily settlement, and cannot directly provide differential settlement information. The method is very unintuitive, and the potential hidden dangers cannot be analyzed, searched and judged in time, and other technical methods need to be adopted to further analyze the data collected on site

Method used

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  • Visualized analysis method for permanent component stand column differential sedimentation under inverse frame condition
  • Visualized analysis method for permanent component stand column differential sedimentation under inverse frame condition
  • Visualized analysis method for permanent component stand column differential sedimentation under inverse frame condition

Examples

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Embodiment 1

[0041] Visual analysis of column differential settlement in a super-large frame reverse construction project in Pudong

[0042] The excavation area of ​​the foundation pit of the project is about 45,000 m 2 , about 251m in length and 187m in width, among which five areas with a radius of 19-21m will be built with towers of 80-190m in height. The excavation depth of the foundation pit is about 15m, and the basement has three floors. The reverse frame support system is effectively integrated with the basement floor. There are more than 1,000 permanent structural columns in the foundation pit. If the differential settlement is too large, cracks will occur at the joints of the upper structural columns and beam-slab structures, which will affect the normal use of the house. At the same time, when the differential settlement of the columns reaches a certain value, the excavation of the foundation pit must be stopped, and the excavation of the foundation pit must be stopped, and eff...

Embodiment 2

[0077] Visual analysis of surface differential settlement in a certain area of ​​Shanghai

[0078] An area in Shanghai needs to evaluate the overall situation of differential subsidence in the area, and obtain local areas with large surface deformation. The analysis area is about 1.8 square kilometers. Through the establishment of 147 observation points on the surface, the (X i , Y i ) plane coordinates, tracked and collected the measured data of each surface observation point 13 times in 6 months, and obtained the elevation data H of the observation points through adjustment i ,δ i , respectively set the parameters as follows: δx=+14mm; δn=-5mm; H 0 =0mm; N=int[(δx+|δn|) / k]=1mm.

[0079] Through the above steps (1) to (7), the visualized plane map of surface differential settlement was obtained (see Figure 8 ); According to the differential settlement datum level H 0 and the data file *.dat to draw a three-dimensional surface graph (see Figure 9 ). analyze Figure ...

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Abstract

The invention relates to a visualized analysis method for permanent component stand column differential sedimentation under the inverse frame condition. The method includes the steps of collecting sedimentation data of a permanent component stand column under the inverse frame condition, conducting classification, comprehensive analysis and screening on the sedimentation data, extracting and processing a sedimentation data source, setting basic parameters, constructing an elevation TIN triangular model, manufacturing a stand column differential sedimentation visualized analysis graph set, and conducting tread analysis and fracture surface judgment on the stand column sedimentation trend. Compared with the prior art, visualized analysis on permanent component stand column differential sedimentation can be rapidly implemented under the inverse frame supporting condition, the high-precision visualized map performance which can visually reflect the differential sedimentation of the permanent component stand column can be obtained, differential sedimentation information of the permanent component stand column can be accurately, clearly and visually expressed, effective technical control measures can be taken in time for abnormal conditions, high-rise building body structure security risks caused by excessively large permanent component stand column differential sedimentation are reduced, and the visualized analysis method has certain practical value.

Description

technical field [0001] The invention relates to a method for analyzing measured data in the field of foundation pit engineering, in particular to a method for visually analyzing the differential settlement of columns of permanent components under the condition of reverse frame support. Background technique [0002] In order to save and intensively use land, high-rise buildings or super high-rise buildings are being built in the center of major cities, especially the first-tier cities. The project scale of underground space development and building foundation pit engineering is constantly expanding, and the difficulty of design and construction technology is constantly increasing. Engineering risks are also getting higher. Aiming at the outstanding problem of the contradiction between the surrounding environment protection and the land use, the upside-down method for the construction of multi-storey basements or underground structures of high-rise buildings came into being. U...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/02E02D1/00
Inventor 牟建华唐万银屠越栋吴俊
Owner 上海市岩土工程检测中心有限公司
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