| 1. | Reason of defect in pile body of bored caisson pile and keep a lookout
钻孔灌注桩桩身缺陷的原因及防范 |
| 2. | When elastic pile model is employed , the depth of the piles embedded in the slide bed is relatively large , whereas the dimensions of the pile body are relatively small . nevertheless , if rigid pile model is employed , the situation is reverse
采用弹性桩方案时桩的埋深较大，但桩身截面可适当减小；而采用刚性桩方案，桩的埋深浅，但桩身截面大。 |
| 3. | In landslides remediation works , the mechanical model of traditional stabilizing piles are more like cantilever beams , which makes the calculated bending moments and shearing forces of piles very high , thus the size of the piles bodies are considerably large
普通抗滑桩的受力模式与悬臂梁十分相似，所计算得到的桩身弯矩和剪力往往很大，由此桩的截面尺寸也相当大。 |
| 4. | After some correction of the apparent reflection coefficient , the extent of wave impedance differences of the reflection interfaces can be analysed quantitatively and , on such a basis , the defective position of the pile body can be detected
将视反射系数经过一定的校正后，可定量分析反射界面的波阻抗差异的大小，进而确定桩身缺陷的严重程度；反射波往返时则用来推算桩身缺陷的位置。 |
| 5. | As to antislide pile design , confirm anchor anchorage depth is very important , it is not only the key element to decide which one should adopt in rigidity or elasticity pile but also the necessary factor to solve the pile body shear -
对抗滑桩设计而言，确定锚固深度至关重要，它不仅是决定采用刚性桩或弹性桩的先决要素，而且也是求解桩身各处剪力、弯矩以及应力的必不可少的条件。 |
| 6. | Based on the measured data of more than 100 deep stirring piles in a certain project , combined with static loading test on over 20 piles , this paper deals with the feasibility of using the reflection wave method to detect the completeness of the deep stirring pile body
摘要根据某工程100多根深层搅拌桩的实测资料，并结合20馀根桩的静载试验结果，对反射波法检测深层搅拌桩桩身完整性的可行性进行了探讨。 |
| 7. | This paper describes the principle and method for testing pile bottom force - hearing layer and pile body force - bearing declivity , deals with results of standard component test and inclined model pile test under the condition of inclination , and also gives some practical examples of engineeing application
摘要阐述了桩底持力层与桩身倾斜度测试原理及方法，列举了倾斜情况下的标准件试验及倾斜模型桩试验结果与工程应用实例。 |
| 8. | With zh11a datum pile inspection in a certain district of zhangshu as an example , the paper analyses the relationship between characteristics of radar wave sets of large diameter piles and structures of pile bodies , thus providing basis for applying ground - penetrating radar to non - destructive inspection of large - diameter piles
以樟树市某区zh - 11a基桩检测为例，分析了大口径桩的雷达波组特徵与桩体结构之间的关系，为探地雷达无损检测大口径桩提供了依据。 |
| 9. | Thaw settlement cause negative friction . this paper base on the thought of " initiative cooling " , aim at three problems existing in common concrete pile used in frozen soil , a new type of pile is proposed to overcome the disadvantages of the classical pile used in frozen soil . pile body within active layer is fluted and refilled with porous materials such as gravels and ballasts , convection will be occur and then thermal exchange inside porous material in winter while only heat conduction exists in summer , as a result the soil around flutings will be cooled , so the top line of permafrost will be drive up
本文基于“主动冷却”地基的思想，以及针对冻土地区普通混凝土桩存在的三大问题，提出了一种新型桩的设计思路，运用数值仿真试验手段对其冷却机理与加固机理进行了系统研究，即在冻融活动层的深度范围内，在混凝土桩身的表面刻槽，修筑完时槽内填充碎石、块石等多孔介质，通过外界大气温度的自然波动下多孔介质在冬季时存在的对流换热机制，而在夏季只存在热传导，来达到主动冷却桩周冻土和抬升冻土上限的目的。 |
| 10. | The same type of cement - soil mixing pile with concrete core , concrete pile and cement - soil pile that means they have the same pile length and pile diameter is deeply analyzed by finite element program . we get the q - s curve , the axis force of pile body curve , the stress of pile curve and the side and the end sharing load ratio of the pile curve by finite element program . with the help of the finite element program , the paper finds the relations between the pile ' s parameter and its bearing capacity and load transferring properties
利用有限元计算分析了同比(桩长相同、桩径相同)水泥土组合桩、水泥土搅拌桩和混凝土钻孔灌注桩，得到了它们的荷载沉降曲线、桩身应力曲线、桩身轴力曲线、桩侧桩端分担荷载曲线等，通过这些曲线对它们的荷载传递规律以及变形特性进行了深入的分析。 |
