| 1. | Question about reliability of self - balanced method of pile bearing capacity
桩承载力自平衡法的可靠性之质疑 |
| 2. | The result testifies that compaction under reamed bored piles obtain good results under the same geological conditions , such as increasing pile bearing capacity up to 75 . 3 % and reducing settlement and pile length
结果表明，在同等工程地质条件下挤扩支盘桩提高承载力可达75 . 3 % ，并能减少沉降和缩短桩长，具有良好的经济效益。 |
| 3. | According to the engineering practise data , one method to calculating utmost single - pile bearing capacity is provided after simulating the uniform - section pile " side friction curve by power - function math models . analyse indicates that the method possesses good counting precision
并结合实测资料，在对等截面桩侧摩阻力曲线进行幂函数数学模型拟合的基础上提出了抗拔桩承载力计算的计算式，分析结果表明：本文提出的计算式具有很好的计算精度。 |
| 4. | The paper compares and analyses in detail to the methods of the soil - pile interaction , by summarizing on the domestic and international latest theory and research systematically . so the rational and effective method of the soil - pile interaction is put forward and program composition corresponding in this paper . the pile bearing capacity is analyzed respectively with static load , dynamic load
本文在全面系统地总结国内外最新理论和研究成果的基础上，对桩基础的计算方法进行了详细地比较和分析，提出合理、有效的考虑桩-土相互作用的计算分析方法，编制相应的计算程序，并对桩基在静荷载、动荷载的作用下的承载力性能作了详细的分析。 |
| 5. | Under the lateral load , the positive battered pile has bigger bearing capacity than the vertical and the negative pile . the allowable settlement of the pile head is suggested and the vertical pile can bear load with inclination of less than 10 , and the battered pile bearing vertical load can be angle of less than 10 . then the paper employed the generalized elastic theory in pile group , considering the interaction between pile - soil
就桩顶的竖向沉降而言，桩身的微小偏斜(小于10 ) ，对竖向受荷桩的正常使用没有明显的影响；倾角太大的斜桩承受竖向荷载的能力有所减少；直桩可以承受一定倾角(小于10 )的倾斜荷载，这时的倾斜荷载对桩顶的沉降影响较小，但桩顶水平位移增加比较明显。 |
| 6. | The paper draws some valuable conclusions : the limited bearing capacity of manual excavation filling pile is much higher than the limited bearing capacity of machine drilled filling pile ; through grouting injection around the pile shaft , the pile bearing capacity can be effectively improved ; proportion of resistance force around the pile side in total load is much larger than that of pressure on the pile tip , and the intensity of resistance force around the pile side is 30 - 50kpa on average
得出一些有价值的结论：人工挖孔灌注桩的极限承载力明显高于钻孔灌注桩的极限承载力；地下水位对桩基承载力有显著影响；利用桩侧注浆可有效提高桩的承载力；桩侧摩阻力所占总荷载的比例远大于桩底压力，桩侧土的摩阻强度平均值为30 50kpa 。 |
| 7. | Composite foundation with cfg piles developed from the later of 1980s " is a technique of composite foundation with rigid piles . it has been wildly used in large quantity of construction for its high ratio piles bearing capacity , notable improvement in bearing capacity of subsoil , adjustable , lower construction cost ( compared with pile foundation engineering ) and wildly application ( used in many kinds of regional soil such as soft soil > loess , expansive soil etc . and in multi - storey - , sub - high - rise buildings )
Cfg桩复合地基技术是20世纪80年代末发展起来的一种刚性桩复合地基技术，以其桩承担荷载比例高、地基承载力提高幅度大、可调性强、工程造价低廉(与桩基工程相比)和应用范围广泛(在软土、黄土、膨胀土等多种区域地基中应用，应用于多层、亚高层和高层建筑)而为大量工程所采用。 |
| 8. | The numerical simulation indicate that it promote permafrost growth and accelerate the course of recover frozen greatly after fluting via natural convection dropping temperature effect , the top line of permafrost rises greatly , consequently enhance pile bearing capability and so do the capability for resisting frost heaving and thaw settlement
数值仿真分析的结果表明，桩身刻槽后，利用多孔介质自然对流降温效应，促进了冻土的发育，使桩的回冻时间大为缩短；冻土上限大幅度抬升，从而使得桩的承载力提高，抗冻胀融沉性能提高。 |
| 9. | The drilling is fixed hydraulic pressure traverse motion mechanism , the complete machine can make lateral movement , and can content the pile bore emplacement of various pile foundation position , the operation is convenient and flexible , the leveling of the complete machine is fast and this can shorten the assistant time of drilling emplacement
该机装有液压横移机构，整机可作横向移动，可满足各种桩基础布局的桩孔就位，操作方便灵活，整机调平快，可大大缩短钻机就位的辅助时间。 |
