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Study of Construction Monitoring and Control Technique for Cable-stayed Bridges

Author: WuZhengAn
Tutor: LiuLaiJun
School: Chang'an University
Course: Architecture and Civil Engineering
Keywords: Cable-stayed bridge Construction Simulation Construction Control Error Analysis Parameter identification
CLC: U445.4
Type: Master's thesis
Year: 2010
Downloads: 84
Quote: 0
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Abstract


Cable-stayed bridge , with its sleek , novel structure, excellent across the modern bridge one of the most competitive bridge . With the increasing scale of the cable-stayed bridge , cable-stayed bridge construction control become increasingly important. The cable-stayed bridge monitoring three aspects including linear, stress and cable force , of equal importance , must be comprehensive to smooth construction , in order to meet the design state . Through the establishment of the structural analysis model , select the appropriate factors, including structural parameters , construction technology, construction monitoring methods , temperature effects , elastic modulus of concrete and its shrinkage and creep effect and by theoretical calculation and analysis of the numerical results with the measured numerical comparison to find out the reason for the existence of error , the feedback to the next step of construction work , and then guide the stages of construction work . Guangdong Foshan high praise Bridge engineering background , using the finite element calculation software the Midas and bridges by Dr. calculation model of the cable-stayed bridge that simulate actual loads in the force of the bridge structure , deformation simulation analysis . High praise Bridge linear optimal control system through the establishment of the Kalman filter method with the perfect measurement system to ensure accurate elevation measurements . From the results of actual control , adaptive construction control ideas can better adapt to the cable-stayed bridge construction control , timely estimate the actual value of the parameter is completely possible to achieve the the ideal control objectives results in the construction process . At the same time , the data of all stages of construction that the actual tensile force of the cable-stayed with the theoretical tensile force all remain within 10% of specification allows the control of the cable force to achieve the desired goals . Control , the full-bridge linear structural analysis, linear control , stress control and cable force , stress and cable force have been well controlled. Through theoretical calculation and analysis with high praise Bridge construction control of the entire process , made ??a useful attempt to control this type of bridge construction , and provide a reference for the future construction of the bridge control and learn from .

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CLC: > Transportation > Road transport > Bridges and Culverts > Bridge Construction > Construction Technology
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