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Foundation ditch springback observation mark convenient for layered observation and observation method

A foundation pit and marking technology, which is used in measuring instruments, measuring devices, surveying and mapping, and navigation, etc., can solve problems such as the trouble of burying rebound markers and observation, and cannot achieve layered observation or constant observation, saving observation time. , Speed ​​up the deformation observation speed, the effect is remarkable

Inactive Publication Date: 2015-07-15
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Embedding of springback marks can be carried out in accordance with the provisions of Article D.0.2 of Appendix D of "Code for Measurement of Building Deformation", but the embedding and observation of springback marks in "Code for Measurement of Building Deformation" are very troublesome and cannot be layered observe or observe from time to time

Method used

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  • Foundation ditch springback observation mark convenient for layered observation and observation method
  • Foundation ditch springback observation mark convenient for layered observation and observation method
  • Foundation ditch springback observation mark convenient for layered observation and observation method

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Such as Figure 1 to Figure 3 As shown, this embodiment provides a foundation pit rebound observation mark that is convenient for layered observation, including a base 1, an observation rod 2 arranged on the base 1, and an observation mark 4, and the observation mark 4 is arranged on the top of the observation rod 2; The observation rod 2 includes five observation units 3 connected end to end in sequence, and the observation unit 3 includes a connecting rod 6 and a protective sleeve 5 that are sleeved inside and outside; According to the different requirements of actual observation, the observation pole can be selected to include observation poles with different numbers of observation units.

[0048] Wherein, the observation mark 4 is an independent part, which can be installed on the top of each observation unit 3, and the observation mark 4 is as image 3 As shown, the shape is a bolt column, and its top is a spherical ball.

[0049] The base 1 is a square steel pla...

Embodiment 2

[0053] A method for observing the springback amount of a foundation pit by using the rebound observation mark of the foundation pit convenient for layered observation described in embodiment 1, comprising the following steps,

[0054] (1) Set up observation points: According to the existing technology, five foundation pit springback observation marks are respectively embedded in the foundation pit springback observation points in the foundation pit, and each foundation pit springback observation point is respectively marked with J1, J2, J3, J4, J5 means; (the quantity and layout of observation points for foundation pit springback can be set in accordance with the requirements of 5.3.2 of the "Building Deformation Measurement Specification" (JGJ 8-2007)) and set benchmarks and two observation turning points outside the foundation pit , where: the benchmarking point is denoted by BM, and each observation turning point is denoted by TP1 and TP2 in turn; Figure 5 shown.

[0055]...

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Abstract

The invention relates to a foundation ditch springback observation mark convenient for layered observation and an observation method. The observation mark comprises a base, an observation rod arranged on the base and an observation buoy, and the observation buoy is arranged at the top end of the observation rod; the observation rod comprises a plurality of observation units which are connected end to end in sequence, and each observation unit comprises a connecting rod and a protection sleeve, which are sleeved at inside and outside; a horizontal fine tuning device and a circular level are arranged on the observation rod. By means of the observation mark, foundation ditch springback is observed and calculated by means of a simultaneous back and forth observation method, compared with a traditional method, the observation method provided by the invention has the advantages that layered observation and real-time observation can be achieved, the deformation observation speed of a foundation ditch springback point can be accelerated to save the observation time and manpower and material resources, the deformation observation precision is enhanced, the calculation precision of the foundation ditch springback observation quantity is correspondingly improved, the action is obvious and the effect is remarkable.

Description

technical field [0001] The invention relates to a foundation pit springback observation mark and an observation method which are convenient for layered observation, and belongs to the technical field of construction engineering investigation. Background technique [0002] Foundation pit springback refers to the springback of the building foundation after the foundation pit is excavated due to the unloading of the foundation pit’s self-weight within the influence range inside and outside the foundation pit relative to that before excavation, also known as the uplift of the foundation pit bottom. The size and distribution of the springback of the foundation soil are of great significance to the selection of the foundation deformation model and the design of the foundation strength during design. Therefore, the springback observation of foundation pit has become an important work of deformation monitoring in construction engineering investigation. [0003] At present, the rebo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/08
CPCG01C15/08
Inventor 王登杰田文宝
Owner SHANDONG UNIV
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