【作者】 王明恕； 梁力； 董天文； 王凤池；

【Author】 Wang ming-shu Liang li Dong tian-wen Wang feng-chi(The designing Institute of Northeastern University, Shenyang, 110004, China, The Northeastern University. Shenyang. 110004. China )

【机构】 东北大学设计研究院； 东北大学；

【摘要】 大直径桩承载力高、施工简单、造价经济,问世以来得到很快应用。但其荷载下沉曲线没有突变拐点,工程设计时主要按试桩曲线允许下沉量相对的荷载作为设计依据,其安全程度的大小没有明确的数值概念。本文通过对大直径桩渐进破坏机理研究,经分析研究对比搜集到的跨越8年26项工程的52根试桩资料,用波兰曲线法可判定大桩承载力的极限值。故提出本文,供同行讨论参考。更多还原

【Abstract】 The load carrying capacity of the pier or the large diameter pile is larger than the capacity of the medium-sized and small-sized pile, and it is simple for construction and can get less costs of building. Also this foundation has been widely used in the civil engineering. But the P-S curves don’t have the sudden changeful point. In the designing of this research work, we mainly use the loading coming from P-S curves of testing pile and no certain value of its safety factor. We analyze the principle theory of the progressive failure of pier, for getting a real safety factor, and we use the Poland’s curve method and succeed the ultimate capacity of pier. These piers that we have gathered 52 piers in 26 works in 8 years have been done the ultimate loading capacity. So in this paper this idea is pointed out, and we please to discuss it by specialist of this field.更多还原