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A monitoring method for support unloading of long-span steel structures

A technology of structural support and steel structure, which is applied in the field of monitoring and building monitoring, and can solve the problem of less monitoring of construction unloading

Active Publication Date: 2020-12-25
建研院检测中心有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are relatively few studies on construction unloading monitoring at home and abroad.

Method used

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  • A monitoring method for support unloading of long-span steel structures
  • A monitoring method for support unloading of long-span steel structures
  • A monitoring method for support unloading of long-span steel structures

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Embodiment Construction

[0043] Attached below Figure 1-6 The specific implementation manner of the present invention will be described in further detail.

[0044] This embodiment takes a building venue as an example, such as figure 1 As shown, it is a long-span steel structure, and its support unloading monitoring method is as follows:

[0045] Step 1: The finite element analysis software SAP2000 or ANSYS is used to carry out the construction simulation of the unloading scheme for the long-span steel structure with multiple support points. According to the construction simulation results, the final unloading scheme is selected for the large-span steel structure with smaller stress ratio and deformation, such as image 3 shown.

[0046] According to the structure and function, it is divided into A, B, C, D, L1, L2, L3, L4, L5, L6, a total of 10 zones.

[0047] The following factors should be considered in the construction simulation:

[0048] 1) Consider synchronous hierarchical unloading, and as...

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Abstract

The invention discloses a large-span steel structure support unloading monitoring method which comprises the following steps of for aiming at a large-span steel structure with multiple supporting points, performing unloading plan construction simulation by means of finite element analysis software, according to a construction simulating result, selecting an unloading plan with relatively low stress and deformation of the large-span steel structure as a final unloading plan; according to the final unloading plan for a construction simulation result, configuring sensors to key components in thelarge-span steel structure supporting system and structure; applying unloading monitoring, namely monitoring large-span steel structure support unloading, establishing a stress and deformation time history curve for a monitoring result, and performing contrastive analysis on a construction analog theoretical calculated value of the final unloading plan; establishing an early-warning mechanism andperforming unloading construction early-warning. The method can accurately and stably reflect the performance parameter change of the structure in an unloading period in a real-time online manner, andcan perform in-time early-warning of abnormities and conditions which reduce safety of the structure, thereby supplying high convenience and strong support for automatic measurement and data processing for engineering safety.

Description

technical field [0001] The invention relates to a monitoring method, in particular to a large-span steel structure support unloading monitoring method, which belongs to the technical field of building monitoring. Background technique [0002] In recent years, a large number of cross-spatial structures are being built across my country. These large spans can often accommodate tens of thousands or even hundreds of thousands of people, such as gymnasiums, terminal buildings, railway stations, etc. [0003] This structure has the characteristics of large span, beautiful and light appearance, etc., but its complex form is mostly flexible structure, and the construction technology and process are complicated. Potential safety hazards, once an accident occurs, it will cause huge casualties, property losses and bad social impact. [0004] During the construction process, sensors are placed in the key parts of the structure for monitoring, which can issue early warnings for out-of-s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M5/00G01D21/02G08B19/00
Inventor 常乐高海军赵有山撖利平李志伟
Owner 建研院检测中心有限公司
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