On-line real-time monitoring method for safety stability of foundation pit during stratum vibration
A real-time monitoring and stability technology, applied in excavation, infrastructure engineering, infrastructure testing, etc., can solve the problems of cumbersome monitoring process, great interference in construction and transportation operations, and high monitoring costs, so as to reduce risks and construction costs , Improving the effect of enterprise efficiency and market competitiveness
Active Publication Date: 2011-01-05
SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD
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[0004] The traditional monitoring method of foundation pit construction in areas with frequent ground vibrations mainly has the following shortcomings: (1) It cannot monitor in real time, that is, it cannot monitor the deformation of the measuring point at any time, so it cannot timely reflect the abnormal changes of the foundation pit project during the construction process
(2) It interferes a lot with the construction, because the instrument needs to be erected in the deformation monitoring, so it interferes a lot with the construction operation, especially the transportation operation
(3) Due to the randomness of ground vibration and its short response time, it is difficult for traditional monitoring to capture the ground vibration response information of foundation pits (4) The monitoring cost is high, and the same section needs to be monitored repeatedly. Time-consuming, resulting in higher monitoring costs
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[0014] The features of the present invention and other related features will be further described in detail below in conjunction with the accompanying drawings through embodiments, so as to facilitate the understanding of those skilled in the art:
[0015] attached Figure 1-2 Numbers 1-7 indicate: low power consumption wireless modem 1 , wireless acceleration sensor 2 , wireless acceleration sensor node 3 , memory 4 , modem 5 , mobile phone network 6 , and main server 7 .
[0016] attached figure 1 It is a schematic diagram of the structural principle of the method of the present invention. Such as figure 1 It can be seen that the principle structure of the method of the present invention mainly includes a sensor, an on-site storage unit and a main server on the Internet. The wireless acceleration sensor node 3 is composed of a low-power wireless modem 1 and two wireless acceleration sensors 2 . The storage unit consists of a laptop computer with alternating current or wi...
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The invention belongs to the technical field of foundation pit construction of civil engineering, and in particular relates to an on-line real-time monitoring method for the safety stability of a foundation pit during stratum vibration. In the method, sensors buried under the ground receive vibration response information of a soil (or structure) stratum, the acquired information is transmitted to a computer in a data form, and the computer synchronously displays, analyzes and stores the data acquired by each sensor node in real time by using acquisition control software, so that real-time evaluation can be carried out on the safety stability of the foundation pit; and at the same time, the method ensures that data statistics can be carried out on the stability of the foundation pit at the most important time, thereby being beneficial to detecting the safety stability of the foundation pit in a period when the stratum frequently vibrates. The invention acquires an instant and precise foundation pit monitoring process, and enables the whole excavating construction process of the foundation pit to be faster, safer and more economic.
Description
technical field [0001] The invention belongs to the technical field of foundation pit construction in civil engineering, and specifically refers to a method for on-line real-time monitoring of the safety and stability of foundation pits when the ground shakes. Background technique [0002] Construction in areas with frequent ground vibrations will face catastrophic threats in many construction conditions such as hoisting of large components, slab support systems, foundation pit steel support operations, etc. According to inquiries, there are currently relatively scientific norms and regulations on the earthquake resistance of engineering construction products in China, but there are no detailed norms, regulations or technical requirements on how to resist ground vibration disasters during the construction process. Therefore, it is of great practical significance to study the construction method of the foundation pit according to the area where the ground vibration occurs fr...
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Inventor 叶可炯陈立生赵国强黄永春陈介华
Owner SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD