Papers by Author: Hui Jun Zheng

Abstract: Nowadays the design becomes more and more international. In order to effectively meet this trend, it is necessary to understand the similar or different concept and application of American code and Chinese code on seismic design. This article introduces the concept and design procedure of ASCE7 and compares the seismic analysis results of ASCE7 and GB 50011-2010 through a project example. The similarities and differences of American code and Chinese code on seismic design are summarized.

Abstract: When the loading sustained by the foundation is large, employing piled raft foundation is one of the best solutions. In the elasto-plastic design of piled raft, piles could improve the differential settlement and reduce raft thickness. As the raft sustains high earth and water pressures, by reducing the span length of raft and excavation depth, one can get economic design. Using elasto-plastic property of the pile is a better method to avoid increasing the pile length and pile diameter and making full capacity of the piled raft foundation in design compared to normal piled raft. With adoption of few small diameter piles, the raft thickness could be reduced significantly. This makes it much better than raft foundation.