ansys建立連續(xù)剛構(gòu)橋的案例
85+150+85m 連續(xù)剛構(gòu)橋 ￥25
85+150+85m 連續(xù)剛構(gòu)橋
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基于midas的五跨連續(xù)剛構(gòu)橋計(jì)算書(shū)
剛構(gòu)計(jì)算書(shū).doc
基于應(yīng)變監(jiān)測(cè)數(shù)據(jù)的大跨度連續(xù)剛構(gòu)橋的可靠性評(píng)估（一）( in English)
Author：Li Yinghua
Abstract
when to do bridge maintenance and which individual component of the bridges needing maintenance is a world problem at present, and the health monitoring system is considered to a very helpful tool for solving this problem. As the continuous monitoring over a long-term period can increase the reliability of the assessment, so, a large number of strain data acquired from the structural health monitoring system (SHMS) installed on a long-span prestressed concrete continuous rigid frame bridge is adopted in this paper. Firstly, a calculation method of point time-dependent reliability is proposed based on the basic reliability theory, and introduced how to calculate reliability of the bridge by using the stress data transformed from the strain data. Secondly, combined
展開(kāi) 基于應(yīng)變監(jiān)測(cè)數(shù)據(jù)的大跨度連續(xù)剛構(gòu)橋的可靠性評(píng)估（三）( in English)
接上文：
4. The maintenance reliability threshold determination during bridge early operation stage
4.1 Example analysis
Take the data collected from the sensor named 2-3MID-2 embedded in the mid-span section base plate between 2# and 3# pier of the bridge for example, process the data according to the method suggested in Section 3.3, convert the data into stress data, and then do statistical analysis of the stress data and deal with the statistical data by Gauss distribution fitting, which can be seen in Fig. 5.
Fig. 5 Stress distribution statistics and Gaussian distribution fitting
Through the above statistics analysis of the converted data, the mean and standard deviation of the measured load effects probability distribution can be obtained for each time section, of which the
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基于應(yīng)變監(jiān)測(cè)數(shù)據(jù)的大跨度連續(xù)剛構(gòu)橋的可靠性評(píng)估（二）( in English)
接上文：
However, Eq. (5) is mostly applied for building structures which mainly bear static loads, and the main factor that affects the strength of concrete in Eq. (5) is the durability of concrete. As for bridge structures, live load effects is also quite significant. In addition to the factor of durability, the material fatigue can also cause concrete strength decay, and its effect can not be ignored in practical engineering. J. L. Zhang et al (2004) tested the concrete strength of more than 10 old bridges located in the Central South and the South China regions by means of hammer, core samples drilled and ultrasonic wave methods, and 703 useful data were obtained, and modified Eq. (5) based on the obtained data, and suggested the formula for concrete bridges given by
In fact, Eq. (6)
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