地基处理强夯法英文PPT

1、我们毕业啦其实是答辩的标题地方地基处理强夯法（动力固结法）汇报人指导老师introductionpreliminary evaluationdesign considerationscontracing proceduresconstraction monitoringcontentadjustments duringdynamic compaction介绍预先评估设计考虑招投标程序建设监管 the mass of the tampers generally ranges from 5.4 to 27.2 mg, and drop heights range from 12.2to 30.5

2、m. lighter tampers and smaller drop heights result in depths of improvement on the order of 3.0 to 4.6 m. heavier tampers and greater drop heights result in improvements on the order of 6.1 to 9.1 m“”强夯调整1categorize soil type:(1) site investigation(2) general description of soil categoriesassess sit

3、e restraints:(1) ground vibrations(2) lateral ground displacements(3) high water table(4) presence of hard or soft layers2determine design requirements: (1) tolerable settlement(2) minimum soil property(3) depth of improvement limitation3论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整estimate costs:

4、(1)dynamic compaction costs(2)alternate ground improvement techniques4论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整1.selection of the tamper mass and drop height to correspond to the required depth of improvement. 2.determination of the applied energy to be used over the project site to result in

5、the desired improvement.3.selection of the area to densify.4.determination of the grid spacing and number of phases. 5.establishing the number of passes.6.the need for a surface stabilizing layer.研究背景研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考

6、虑招投标程序建设监管强夯调整development of design planmultiple passesarea to densify论文绪论研究背景研究方法研究结果问题讨论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整design considerationsgrid spacing and num

7、ber of dropssurface stabilizing layerapplied energy requirementsselection of tamper and drop height论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整selection of tamper and drop heightn has been found at project sites to range from

8、0.3 to 0.8. the variation in n is attributed to the: efficiency of the drop mechanism of the crane. total amount of energy applied. type of soil deposit being densified. presence of energy absorbing layers. presence of a hard layer above or below the deposit being densified. contact pressure of the

9、tamper.论文绪论研究背景研究方法研究结果问题讨论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整applied energy requirements研究背景研究方法研究结果问题讨论area to densif

10、ydynamic compaction is generally completed over an area larger than the plan area of the embankment or the loaded area. grid spacing and number of dropsa drop point spacing of 1.5to 2.5 times thediameter or width of the tamper is common. multiple passesthe number of drops that can be applied at a gr

11、id point location at onetime could be limited by the depth of the crater.surface stabilizing layerat sites where the surface is in an extremely loose condition, such as an old landfill, it might benecessary to add a stabilizing surface material of granular soil to form a working mat.论文绪论论文总结论文绪论研究背景

12、研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整if the design agency and/or their consultant do not have expertise in dynamic compaction, a performance type contract should be selected for the work. performance specificationspreparation of a method specification requires knowledge of the various facets of dy

13、namic compaction either within the design agency or by their consultants. method specifications 研究背景研究方法研究结果问题讨论论文绪论论文总结研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整研究背景研究方法研究结果问题讨论论文绪论论文总结研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整two basic type

14、s of specifications are used for dynamic compaction projects: method specifications and performance specifications.providing a tamper of the prescribed size tamperproviding the proper equipment with a single cable to raise and drop the tamperequipmentproviding sufficient cables, swivels, and other e

15、quipmentother equipmentmaintaining safety at the job site including a safe working distance safety研究背景研究方法研究结果问题讨论论文绪论论文总结研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整研究背景研究方法研究结果问题讨论论文绪论论文总结研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整研究背景研究方法研究结果

16、问题讨论论文绪论论文总结研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整method specifications the contractors primary duties：keeping records of the number of drops, the number of passesrecordsmaintaining production to meet the schedule assigned for the project.schedule研究背景研究方法研究结果问题讨论论文绪论

17、论文总结研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整method specifications general descriptionwork areaequipment requiredenergy applicationbackfill and ground levelingrequired testingrecordkeepingpayment问题讨论研究结果研究背景研究方法textiarsproviding subsurface information including the geot

18、echnical report to the biddersinformationdefining the extent of the area to be improved.arealisting the minimum prequalification requirements requirementsspecifying the end product to be achieved.specify论文绪论论文总结研究背景研究方法研究结果问题讨论论文绪论论文总结研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设

19、监管强夯调整performance specifications研究背景研究方法研究结果问题讨论论文绪论论文总结研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整研究背景研究方法研究结果问题讨论论文绪论论文总结研究背景研究方法研究结果问题讨论论文绪论论文总结研究背景研究方法研究结果问题讨论论文绪论论文总结论文绪论研究背景研究方法研究结果问题讨论论文总结介绍预先评估设计考虑招投标程序建设监管强夯调整project descriptionwork arearequiredimprovementprequal

20、ificationtimeduring fordynamiccompactionsite preparationrequired testingrecordkeepingpaymentclose coordination between the design engineer and the person writing the specifications is essential！问题讨论研究结果研究背景研究方法423induced settlementa rise in ground surface between drop point locations is an indicatio

21、n of plastic soil deformation associated with high pore water pressuresmultiple passes with enough delaypore water pressure measuring unitsground heave and pore water pressurevibration readings should be taken using a seismograph. the particle velocity measurements should be below the permissible values .groun