The numerical results show that the proposed model can not only effectively reduce the cost of the numerical analysis in time domain , but also retain the main factors for the dam - foundation dynamic interaction analysis , and the results are reasonable , acceptable and very convenient for engineering application 结果表明,这种直接应用于时域求解的简化模型,既反映了影响相互作用的主要因素,又使计算工作量大大减少,结果可靠合理,便于工程上的推广应用,同时为进一步进行非线性体系在时域中的简化计算打下了基础。
Based on the previous theoretical analysis , two practical projects of pile - raft foundation of high - rise building on soft ground are studied by using the software of pile - raft foundation interaction analysis program pogap . the choice of standing layer for pile , the rational compression modulus of soil under pile , the place of pile and the space between piles , and the reasonable thickness of plate are analyzed , some well - regulated conclusions can be achieved . an experiential equation for choosing the optimal thickness of plate is also given 根据以上分析,结合两个软弱地基上高层建筑桩筏基础的工程实例,利用浙江大学岩土工程研究所编制的pogap桩筏基础共同作用分析软件,就桩端持力层的选择,桩端下卧层压缩模量合理选值,桩位及桩间距的确定,筏板厚度的合理取值等问题展开分析,得出了一些规律性的结论,提出了筏板最佳板厚取值的经验公式。
The data about the accidents of the mountain areas and the highways in shaan ' xi province , especially for changan province , ningshan province , shiquan province , xitong freeway , xibao freeway , xihuang highway , had been investigated , settled and analyzed . the features of the accidents had been summed up . then the relevance between the accidents and factors had been analyzed by using the method - gray interaction analyses and the game had been presented basing on the real situation 本文通过对陕西省的山区、高等级公路的交通安全和管理现状进行调查,并重点针对以下区域:山区? ?长安县、宁陕县、石泉县;高等级公路? ?西潼高速公路;西宝高速公路;西黄一级公路的各项流量、事故数据进行整理,对事故的特征进行分析,总结其规律,用灰色关联分析法对事故因素与事故发生之间的关联性进行分析,在此基础上根据现实情况提出了相应对策。
( 5 ) on the basis of theoretical analysis , the program for the interaction analysis of mat and pile ? at foundation on layer soil has been developed . not only compared with other methods , but also with settlement data got form practice , the method of this paper and the program developed in this paper are proved reliable ( 5 )本文采用了fortranpowerstation开发工具编制了一套用于片筏和桩筏基础共同作用分析的计算程序,经过与其他计算方法和实际观测资料的比较,证明本文分析方法和编制程序是可靠的。
Subsequently , the interaction equations and its analysis programs come into being . with the applications of above interaction analysis method and its analysis programs , the following works are studied in this thesis , ( 1 ) study on the effects of the design parameters of the slab , which affect the counterforce on the pile head and the sedimentation characteristics of the piled raft foundation 利用上述共同作用分析方法和共同作用分析程序,做了如下研究工作: ( 1 )筏板设计参数对桩筏基础桩顶反力及沉降特性的影响; ( 2 )桩设计参数对桩筏基础桩顶反力及沉降特性的影响; ( 3 )在上述分析研究的基础上,阐述了变刚度调平设计的原理、方法和步骤。