000009622 001__ 9622
000009622 005__ 20141205150224.0
000009622 04107 $$aeng
000009622 046__ $$k2008-10-12
000009622 100__ $$aCao, Zhenzhong
000009622 24500 $$aA Formula for Calculating Liquefaction Probability Based on Chinese Seismic Code

000009622 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009622 260__ $$b
000009622 506__ $$arestricted
000009622 520__ $$2eng$$aThe method of liquefaction prediction is very important to seismic design of foundations and engineering structures. The liquefaction prediction method in Chinese seismic code has formed more than 30 years and has been applied in engineering comprehensively. As the rapid development of engineering construction in China, more demand for liquefaction evaluation is raised. There are two questions should be answered. One is the reliability of liquefaction prediction results and only the simple answer of “yes” or “no” liquefaction is not enough. The other is that when the liquefaction prediction result is close to the critical state of discriminant the engineers often feel confusion. They want to know the conservation extent of the discriminant. However, the existing method is deterministic and can not answer the questions. The purpose of this paper is promoting the deterministic method of Chinese code discriminant to the probability method of liquefaction evaluation. Firstly, the liquefaction limit state is established according to the Chinese code discriminant, and the variable parameters are determined considering the influence factor of liquefaction, and then a probability formula is formed using first order and second moment principle. In addition, the safety factor of liquefied cases and non-liquefied cases is calculated using Chinese code discriminant and its distribution is statistically analyzed, respectively, the cure of liquefaction probability versus SPT ratio (namely safety factor) is proposed according to Bayesian theory. The extent of the conservation of Chinese code discriminant is attained from this cure. Finally, the two results deriving from these two theories are discussed and the discrepancy, merit and demerit of the new formula are pointed out.

000009622 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009622 653__ $$aliquefaction prediction, probability, Chinese code 

000009622 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009622 720__ $$aCao, Zhenzhong$$iYuan, Xiaoming$$iChen, Longwei
000009622 8560_ $$ffischerc@itam.cas.cz
000009622 8564_ $$s200342$$uhttps://invenio.itam.cas.cz/record/9622/files/04-01-0126.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 04-01-0126.
000009622 962__ $$r9324
000009622 980__ $$aPAPER