At present, the existent design theories of composite pile foundation didn't forma valid method to confirm the number of piles still.
目前已有的复合桩基设计理论中，对桩数的确定尚未形成一种统一有效的方法，有的设计人员在设计时仍按承载力控制来确定。
Analysis results reflect the practical work properties of pile-soil interaction, and validate the correctness of composite pile foundation.
分析结果基本反映了桩-土-筏的实际工作性状，验证了复合桩基理论的正确性。
Composite pile foundation with long and short piles is a new kind of pile foundation. It is necessary to study the bearing mechanics and working behavior.
长短桩组合桩基础作为一种新型的桩基形式，对其承载性状、工作机理的研究很有必要。
The different distribution of pile reaction between pile groups composite foundation and composite pile foundation are studied, and some reasons are given.
研究了多桩复合地基与多桩复合桩基在桩顶反力分布上的不同，分析了出现差别的原因。
Meanwhile, the distributions of additional stress of the composite pile foundation with equal pile length and the composite pile foundation with the adjusted soil rigidity.
对地基土刚度调整后的中心布桩复合桩基土中附加应力的分布进行了有限元模拟。
The relationship of composite foundation and ground treatment, composite foundation and double-layered foundation, composite foundation and composite pile foundation were studied.
分析了复合地基与地基处理、复合地基与双层地基、复合地基与复合桩基之间的关系。
The probability analysis method of the bearing capacity of composite pile foundation is investigated, which can push the developing of the reliability method of composite pile foundation.
研究了复合桩基承载力可靠性分析的方法，这对复合桩基的可靠性设计将起到积极的推动作用。
According to the design theory of composite pile foundation, the simplified design method of composite pile foundation with sleeper is presented based on the engineering practice in Nanjing.
就南京地区一幢住宅楼的复合桩基设计实例，根据复合桩基的设计理论，给出了桩梁结构复合桩基的简化设计方法。
Based on the settlement calculation method of composite pile foundation, calculation model in compressive area method of reliability is established, and simplified calculation model is presented.
从复合桩基的沉降计算方法出发，建立了沉降可靠度分析模型，通过对各种计算模型的分析比较，提出了沉降可靠度的推荐计算方法。
This paper introduces the test results and calculative method by using the composite foundation of sand-stone pile and concrete pile with low strength.
本文通过试验与工程实践，介绍采用碎（砂）石桩及低强度混凝土桩组合构成复合地基的试验成果、计算方法及应用检测成果。
With the same settlement, the pile distance of pile - net composite foundation is longer than normal composite foundation's.
沉降值相同时，桩-网复合地基比普通复合地基桩间距明显要大。验证了疏桩理论的设计思想。
Bedding cushion is an important part in CFG pile Composite Foundation.
褥垫层是CFG桩复合地基的重要组成部分。
The probability characteristics of bearing capacity of rigid pile composite foundation is analyzed.
对刚性桩复合地基承载力的概率特性进行了分析。
Abstract: : this paper introduces a CFG pile composite foundation construction technology, construction technical requirements and construction are the main problems and solutions.
摘要：介绍了CFG桩复合地基的施工工艺、施工技术要求以及施工中存在的主要问题及解决措施。 。
Based on the load tests carried out in soft soil foundation treatment project of an expressway under construction, the effective cement-soil mixing pile length in composite foundation was explored.
本文根据某高速公路软基处理中不同桩长的水泥土搅拌桩单桩载荷试验结果，探讨了复合地基中水泥土搅拌桩的有效桩长。
Based on the finite element method and the theory of mode superposition, a quasi-static calculation method for the seismic response of rigid pile composite foundation under SV wave is presented.
针对竖向传播的SV波作用下刚性桩复合地基的动力反应，在振型分解反应谱法的理论基础上，提出一种基于有限元分析的拟静力方法。
Precast pile driving test is performed to investigate its possibility in gravel pile composite foundation with settling tube.
为了研究在沉管碎石桩复合地基场地中沉入预制桩的可能性，进行了预制桩沉桩试验。
The characteristics of loading transmission of the CFG pile composite foundation has been analyzed by use of the ANSYS program.
采用有限元ANSYS程序对CFG桩复合地基的应力传递特性进行了分析；
So under the condition of flexible foundation, the optimization of cushion thickness of CFG pile composite foundation with caps is of great significance.
因此，对于柔性基础条件下CFG桩桩帽复合地基褥垫层厚度的优化十分有意义。
Based on the application of post grouting technique in the rigid pile composite foundation, the authors investigated the mechanism of the capacity increase of short rigid pile by this technique.
结合后注浆技术在刚性桩复合地基工程中的应用，探讨后注浆技术提高刚性短桩承载力的作用机理。
In addition, cyclic stress ratio and number of cyclics have remarkable effects on vertical deformation of cement-soil pile composite foundation.
另外，在循环荷载作用下循环应力比和加荷周数对复合地基竖向变形有显著的影响。
By the discusion and analysis of gravel pile composite foundation bearing capacity and anti-liquefaction design, a new design method is presented.
通过对碎石桩复合地基承载力和抗震液化设计的对比和分析，提出了以承载力和抗震液化相互综合考虑的设计方法。
As mixing pile composite foundation has non vibration, non pollution non squeezing effects as well as saving steel products, recently it has been more and more used on the engineering practices.
由于搅拌桩复合地基具有无振动、无污染，不存在挤土效应，节省钢材的特点，使搅拌桩复合地基近年来已逐步地应用于工程实践中。
In order to conveniently research, pile composite foundation under embankment is called pile composite foundation under flexible basement.
为研究方便，将路堤下桩体复合地基称为柔性基础下桩体复合地基。
In contrast to composite foundation and pile preloading, foundation improvement by vacuum preloading is of many unique virtues and very suitable for improvement of large-area soft foundation.
相对复合地基和堆载预压，真空预压方案具有许多独特的优点，非常适合大面积的软基处理工程。
The gravel pile and CFG pile composite foundation is tested, and the load-bearing test of CFG pile is made.
对碎石桩、CFG桩组合型复合地基进行了检验及CFG桩的载荷试验。
In foundation excavating, upright post piles and engineering piles form a long -short pile composite foundation.
在基坑工程中，立柱桩和工程桩形成了长短桩复合桩基础。
Based on elastic methods and the layer-wise summation method, a program developed for settlement calculation of pile ground and combined composite foundation.
基于弹性理论方法，结合分层总和法，编制了群桩沉降计算程序，并掘此对普通群桩和组合桩群桩性状和沉降计算进行研究。
Based on elastic methods and the layer-wise summation method, a program developed for settlement calculation of pile ground and combined composite foundation.
基于弹性理论方法，结合分层总和法，编制了群桩沉降计算程序，并掘此对普通群桩和组合桩群桩性状和沉降计算进行研究。
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