A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Deep foundation pit pile wall top horizontal displacement testing method
The invention provides a deep foundation pit pile wall top horizontal displacement testing method. The method comprises the steps that a first fiber bragg grating string 2 and a second fiber bragg grating string 3 are installed on the two sides of a carrier; the first fiber bragg grating string 2 and the second fiber bragg grating string 3 comprise a plurality of measuring points; selecting two points from the measured object 1, recording the two points as A and B, and setting the initial horizontal displacements of A and B as 0, wherein the distances between the two points and the end points are a and b respectively; when the measured object 1 deforms, acquiring the central wavelength of the measuring point of the deformed first fiber grating string 2 and the central wavelength of the measuring point of the deformed second fiber grating string 3; obtaining the displacement of the deformed A and B; and the displacement of each measuring point is calculated. The device has the beneficial effects that the two groups of fiber grating strings are arranged, the compression strain and the tensile strain of each interface are measured in real time, and the horizontal displacement of two end points is tested through an external reference point and is used as a displacement boundary, so that the deflection of a measured object is calculated, the real-time monitoring of the measured object is realized, and the engineering safety is ensured.
本发明提出一种深基坑桩墙顶部水平位移测试方法，包括：将第一光纤光栅串2和第二光纤光栅串3安装于载体两侧；第一光纤光栅串2和第二光纤光栅串3包括多个测点；在被测对象1上选取与端点距离分别为a和b的两点，记为A和B，并设定A和B的初始水平位移为0；当被测对象1发生变形后，获取变形后第一光纤光栅串2测点的中心波长和变形后第二光纤光栅串3测点的中心波长；获取变形后A和B的位移；计算出各测点的位移。本发明有益的效果：本发明设置两组的光纤光栅串，实时量测各界面的压缩应变和拉伸应变，通过外部基准点测试两端点的水平位移，作为位移边界，从而计算出被测对象的挠度，实现了对被测对象的实时监测，确保了工程的安全。
Deep foundation pit pile wall top horizontal displacement testing method
The invention provides a deep foundation pit pile wall top horizontal displacement testing method. The method comprises the steps that a first fiber bragg grating string 2 and a second fiber bragg grating string 3 are installed on the two sides of a carrier; the first fiber bragg grating string 2 and the second fiber bragg grating string 3 comprise a plurality of measuring points; selecting two points from the measured object 1, recording the two points as A and B, and setting the initial horizontal displacements of A and B as 0, wherein the distances between the two points and the end points are a and b respectively; when the measured object 1 deforms, acquiring the central wavelength of the measuring point of the deformed first fiber grating string 2 and the central wavelength of the measuring point of the deformed second fiber grating string 3; obtaining the displacement of the deformed A and B; and the displacement of each measuring point is calculated. The device has the beneficial effects that the two groups of fiber grating strings are arranged, the compression strain and the tensile strain of each interface are measured in real time, and the horizontal displacement of two end points is tested through an external reference point and is used as a displacement boundary, so that the deflection of a measured object is calculated, the real-time monitoring of the measured object is realized, and the engineering safety is ensured.
本发明提出一种深基坑桩墙顶部水平位移测试方法，包括：将第一光纤光栅串2和第二光纤光栅串3安装于载体两侧；第一光纤光栅串2和第二光纤光栅串3包括多个测点；在被测对象1上选取与端点距离分别为a和b的两点，记为A和B，并设定A和B的初始水平位移为0；当被测对象1发生变形后，获取变形后第一光纤光栅串2测点的中心波长和变形后第二光纤光栅串3测点的中心波长；获取变形后A和B的位移；计算出各测点的位移。本发明有益的效果：本发明设置两组的光纤光栅串，实时量测各界面的压缩应变和拉伸应变，通过外部基准点测试两端点的水平位移，作为位移边界，从而计算出被测对象的挠度，实现了对被测对象的实时监测，确保了工程的安全。
Deep foundation pit pile wall top horizontal displacement testing method
一种深基坑桩墙顶部水平位移测试方法
WANG QUNMIN (author) / ZHANG WENJUN (author) / HUANG JIANGHUA (author) / WU YONG (author) / SUN HAO (author) / ZHOU LIWEI (author)
2023-04-18
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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