桩结构

In order to understand the seismic performance of the large complex structure with basement, the structure-pile-soil finite element model of two typical cross sections of the Tianjin Transportation Junction were established by using the ANSYS software. The elasto-plastic time history analysis was made, and the seismic responses of the whole system under the horizontal seismic load were got. Comparing the results of the seismic response with the rigid foundation model, some reasonable conclusions are drawn.

为弄清楚带有地下室大型复杂结构的抗震性能，本文针对天津站交通枢纽工程，分别取结构典型的横向及纵向剖面，应用大型通用有限元分析软件ANSYS，建立了结构－桩－土体系相互作用的有限元模型，采用动力时程分析方法，研究体系在水平地震作用下的弹塑性动力反应规律，分析结构在地震动作用下的位移和内力的分布；并与假定刚性基础周边土简化为弹簧的结构模型的计算结果进行比较，通过两种模型的地震反应的对比分析，得到了一些有益的结论。

Combined with one cross-sea bridge works the design and construction of steel sheet pile cofferdam of platform in beach are introduced and studied.

对跨海大桥海滩处承台钢板桩围堰方案的设计及施工进行了研究，详细介绍了钢板桩的施工要点，有效缩短了工期，达到了结构合理，施工方便、安全高效的效果。

Analyse the distributive law of shear-lag effect and influence of each structural parameter: pile length , bending stiffness of pile, bending stiffness of abutment, abutment length, different type of soil behind abutment, curve radius, width to span ratio,width of beam, etc. And the main influencing parameters were picked up.

进行结构参数分析，研究等代桩长、桩的纵向抗弯刚度、桥台纵向抗弯刚度、桥台高度、台后土压力、曲率半径、宽跨比及箱梁肋板间距等对剪滞系数的影响，从而得到影响无伸缩缝曲线箱梁桥剪力滞效应的主要参数和次要参数。

But some kind of detects such as gapping, broaching, break, separation were usually found in bored cast-in-place pile, which maybe reduces bearing value of pile and does harm to the superstructure.

但是许多机械成孔的灌注桩常出现缩颈、扩颈、断裂、离析等缺陷，影响桩基承载力及上部结构的安全，严重者甚至使桩失去承载力。

But some kind of defects such as gapping, broaching, break, separation were usually found in bored cast-in-place piles, which maybe reduces bearing value of pile and does harm to the superstructure.

但是许多机械成孔的灌注桩常出现缩颈、扩颈、断裂、离析等缺陷，影响桩基承载力及上部结构的安全，严重者甚至使桩失去承载力。

The results showed when the structure on raft foundation was close to the tunnel, the total displacement at the top of superstructure took place irreclaimable excursions to another direction, the foundation swung, too. But that of the structure on pile-raft foundation was not.

计算结果表明，当隧道紧靠建筑物时，筏基－结构相互作用体系的基础和结构顶层水平位移均发生了向无隧道一侧的偏移，而桩筏基础－结构相互作用体系的基础和结构顶层水平位移均未发生偏移。

Furthermore, buckling effect factors and their influence law are exploited. Finally, combining the character of piles foundation with high bridge piers with engineering practice, four optimal mathematic models are proposed and flow diagram of optimization analysis is fulfilled by the computer optimum program. A numerical example is analyzed to get optimal solution by using this program. Meanwhile based on the optimal model with buckling coefficient as the objective function, parameter variables are discussed about their effect rule toward the optimal value of objective function.

最后，针对高桥墩桩基础的特点，在基本优化模型的基础上，根据不同的目标函数建立了相应的优化模型，给出优化设计算法流程图，编制了相应的优化计算程序；并根据高桥墩桩基的工程实际设计了一个数值算例，采用本文编制的优化计算程序对该结构进行优化，得到了优化后的最优解；同时，采用高桥墩桩基屈曲系数作为目标函数的优化模型进行因素分析，初步探讨了参数变量对目标函数最优值的影响规律和程度。

Firstly, owing to the existing restriction with insufficient function while imitating the construction using top-down method of business software in common use, this text compiles three-dimensional finite element procedure of plasticity using the model of revisal Cambridge procedure, which better reflect the nature of soil and the force bore ;Secondly, utilizing the procedure compiled , the emulation analysis is used in the large-scale case, which study the responding law of the soil pressure around the case containing, the roof, sheet pile, wall and the floor with the progress of the construction in the course of the construction using top-down method and the distribution law of the stress in the real vehicle.

本文首先针对现有通用商业软件在模拟逆作法施工时功能不足的限制，研编了可以考虑修正剑桥模型的三维弹塑性有限元程序，该程序能较好的反映工程场地的土性和受力，模拟逆作过程；其次，利用研编的程序，对大型箱涵进行了仿真分析，研究了箱涵在逆作过程中周边土压力，顶板，板桩，桩间墙和底板随施工步序进展的系统响应规律，以及箱涵建成后，在实际车辆荷载下箱涵结构的应力分布规律。

The resistance partial factors in design equations are adjusted in order to ensure the target reliability index. The recommended resistance factors are as follows 1.3 and 1.15 for calculating stability of sheet pile and anchorage respectively; 1.4 and 1.35 for calculating strength of sheet pile and tie rool respectively.

为使我国的板桩设计达到目标可靠指标，经过可靠度分析，建议板桩&踢脚&稳定性验算抗力系数调整为1.3，锚碇结构稳定性验算抗力系数、板桩墙抗弯强度作用效应综合分项系数和拉杆拉力分项系数仍分别取为1.15，1.4和1.35。

The company's main products are: BZ-20ES, BZ-18ES utility mining loaders, the equipment can be used for ballast Tunnels, finding the top, were seized at the end, multi-wall clearance, is a sophisticated tunnel construction machinery; needle beam,穿行Top-and-steel arch concrete lining vehicles; wheel, the rail-lines, electric and internal combustion and hydraulic models at 2.5 M3, 3M3, 5M3, 6M3 series of concrete mixing tanker transport, steel Gongjia Bending special equipment - cold-formed; MTR and construction works under pressure by the pile-pipe, steel support, the steel tube PURLIN; works for pulling the pipe wall lock pile with all the various models of hydraulic Stubbs pile driver; Various public facilities used in steel structure, the grid system, and so on.

公司的主要产品有：BZ-20ES、BZ-18ES型多功能挖掘装载机，可用于隧道的装碴、找顶、捡底、多墙清理，是一种先进的隧道施工机械；针梁式、穿行式以及边顶拱式砼衬砌钢模台车；轮式、轨行式、电动式、内燃式和液压式，型号分2.5M3 、3M3、5M3、6M3 系列砼搅拌输送罐车；钢拱架弯曲专用设备---冷弯机；地铁及建筑桩基工程承压用的钢管柱、钢支撑、钢围檩；工程连续墙锁喉管拔桩用的各种型号全液压拔桩机；各种公共设施用的钢结构、网架制安等。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。