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Integral impact response analyzing method for suspension tunnel

A suspension tunnel and shock response technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as complex calculations, achieve satisfactory analysis accuracy, improve structural safety, and clear thinking

Inactive Publication Date: 2014-09-24
ZHEJIANG UNIV
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Problems solved by technology

Due to the nonlinear effect of the fluid, the calculation is complicated

Method used

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  • Integral impact response analyzing method for suspension tunnel
  • Integral impact response analyzing method for suspension tunnel
  • Integral impact response analyzing method for suspension tunnel

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Embodiment Construction

[0021] The present invention will be described below in conjunction with the accompanying drawings and specific implementation.

[0022] The flow chart of the overall impact dynamic response analysis method of the floating tunnel of the present invention is as follows: figure 1 As shown, it mainly includes the following steps: (a) establish a simplified model of the suspension tunnel body; (b) determine the impact load and fluid action; (c) establish the dynamic control equation of the pipe body; (d) solve the overall dynamic response of the structure.

[0023] The specific method of step (a) simplified model establishment is as follows:

[0024] The floating tunnel is connected to the foundation through the anchor cable, and the anchor cable can be regarded as a spring in the calculation, such as figure 2 , image 3 . Since the total length of the suspension tunnel body is generally much larger than the distance between the anchor cables, when calculating the overall resp...

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Abstract

The invention relates to an integral impact response analyzing method for a suspension tunnel. The integral impact response analyzing method is used for calculating the integral displacement and internal force response of the suspension tunnel under the impact load in a way of considering the non-linear fluid effect, and comprises the following concrete steps that a suspension tunnel pipe body simplifying model is built; the impact load and fluid effect are determined; a pipe body power control equation is built; the structural integral motive power response is solved. The integral impact response analyzing method has the advantage that the calculation of the integral displacement and internal force response of the suspension tunnel under the effect of any impact load and under the condition of considering the fluid non-linear effect can be realized.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to an analysis method for the overall impact response of a floating tunnel. Background technique [0002] The floating tunnel is mainly composed of pipe sections, anchor cables, foundations, revetment sections, etc. It has the advantages of strong spanning ability, flexible construction, good operation status, environmental protection and good economy. It is considered to be the most challenging and potential new traffic structure in the 21st century. [0003] Due to the influence of various factors, the floating tunnel body should generally be located 30 meters below the water surface. Therefore, impact loads caused by internal vehicle impacts, shipwrecks and fishing trawls, submarines and even terrorist attacks will pose a serious threat to the safety of the floating tunnel structure. At present, there is no theoretical calculation method for the impact dyn...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 项贻强杨赢
Owner ZHEJIANG UNIV
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