foundation n. 1.建设,创设,创立。 2.基础,根本;根据;地基,地脚。 3.基金;捐款;用捐款创办的事业;慈善机关;财团,基金会。 4.(编织品的)模型;(衣服的)衬里;帽心。 a stone foundation 石基。 a frame foundation 【机械工程】架座,机架,地脚。 be on the foundation 由基金维持。 lay the foundation for [of] 给…打下基础。 strike at the foundation [root] of sth. 要毁灭某事物。 without foundation 无根据的。 adj. -al 基本的,基础的。 -er 〔英国〕公费生。 adj. -less
The characteristics of high pressure gyratory sprayed pumping discusses is presented , which is applicable in wide range of scope and ground layers , convenient for construction , long durability , wide source of materials . mechanism for subgrade strengthening : complex foundation of cement solid and earth between piles was formed by pulsant load of flowing pressure and spraying flow , water wallop , cavitation phenomenon , water wedge effect , extrusion force and air flow agitation etc so as to enhance foundation bearing force and reduce settlement and deformation 高压旋喷注浆技术具有适用范围、适用地层较广,施工方便,耐久性好,材料广阔等特点;其加固地基机理主要是通过流动压、喷射流的脉动负荷、水块的冲击力、空穴现象、水楔效应、挤压力、气流搅动等效应形成水泥固结体与桩间土的复合地基,从而提高地基承载力,减少沉降变形。
The power station is diversion type power station of low gate dam with a normal storage level of 1268 . 0 m , a highest gate dam level of 31 meters and a reservoir capacity of 2 , 974 , 000 cubic meters , the length of diversion tunnel of which is 19 . 57 kilometers , installed capacity is 360mw futang power station is constructed on the basis of deep and thick overburden , the foundation of which mainly consist of five overburdens which , in general , belong to multiple , complex foundation 福堂水电站位于四川省阿坝藏族羌族自治州汶川县境内的岷江河段上,电站为低闸引水式开发。正常蓄水位1268 . 0m ,最大闸高31m ,库容297 . 4万m ~ 3 ,引水隧洞长19 . 57km ,装机360mw 。福堂水电站闸坝建于深厚覆盖层基础上,基础主要存在五大覆盖层,总体属于多层复杂地基。
In the resent years , our state invests much for important engineering projects , irrigation works , expressway , underground and so on . as huge engineerings deal with complex foundation condition , there are often poor foundation , and because the engineerings are very important , the their request for stress is more rigorous than common ones 近几年,国家投资建设了许多重要工程,水利水电工程,高速公路,地铁工程等等,由于大型工程涉及的地质条件会复杂些,往往会遇到软弱地基,由于工程的重要性,对于变形的控制要比一般工程严格一些。
Compared with the mud on wall form hole technology , clash stake technology or vibration sink pipe technology used in complex foundation stake forming , it has advantages of no vibration , no pollution , and no noise . in addition , since the concrete pressed into the drill stem sent vibration free concrete to the pump , so it is eas y to ensure the quality of the stake body . compared with the mud on wall and dry work form hole technology , the side obstruction and end obstruction of screw drill press concrete stake have all been accordingly improved , the weight bearing is better , and the transmutation of the complex foundation is less 其中,螺旋钻孔压灌混凝土成桩技术自研制以来,已在多项复合地基工程中进行了应用,较好地解决了软弱地层成孔困难的问题,适应地质条件范围广,成桩速度较快,工期短、工效高;与复合地基成桩时的泥浆护壁成孔工艺、振冲桩工艺或振动沉管工艺施工比较,具有无振动、无污染、无噪音的优点;另外,压入钻杆内的混凝土为泵送免振混凝土,因此桩体质量易于保证;与泥浆护壁和干作业成孔工艺相比,螺旋钻孔压灌混凝土成桩的侧阻和端阻都有相应的提高,桩的承载性能较好,复合地基的变形较小。
The visualization theory and parameterization technique for fem , and secondary developing technique for ansys were studied . the parameterization principle for fem modeling of arch dam and the implementation technique were introduced . by fully using of the powerful graphic functions of autocad and of the secondary developing techniques provided in ansys , such as uidl , apdl etc , a fem simulation analysis system of arch dam based on ansys was developed , by means of which arch dams on complex foundation can be modeled and analyzed conveniently 首先,研究了有限元中的可视化理论、参数化技术和ansys软件的二次开发技术,介绍了拱坝有限元可视化建模的参数化原理和实施技术,以ansys为平台,并结合autocad软件强大的图形处理功能,利用ansys提供的uidl 、 apdl等二次开发技术,开发了具有水工特色的拱坝仿真分析系统,利用它可较方便地对复杂地基上的拱坝进行有限元建模和仿真分析。
The research reveals that in the complex foundation , the application of screw drill press concrete stake technology is feasible . it has notable effects in reducing the sedimentation of the complex foundation , ensuring the stake quality of the basic stake , improving the weight bearing capacity , saving costs , and cutting time limit 研究表明,螺旋钻孔压灌混凝土成桩技术在复合地基中的应用是可行的,它在减小复合地基的沉降量,保证基桩的成桩质量,提高承载力,节约工程造价,缩短工期等方面均有显著作用。
Based on the screw drill press concrete stake technology , via the practical application of this technology in complex foundation form stake , this thesis goes deeply into the screw drill press concrete stake equipment and technology parameter in complex foundation , the weight bearing of the formed stake , the factors that affect the stake quality , and its practical application in the project and its social and economic benefits 本次研究是在螺旋钻孔压灌混凝土成桩技术的基础上,通过该技术在复合地基成桩中的具体应用,对复合地基中螺旋钻孔压灌混凝土桩的成桩设备及工艺参数、成桩后桩体的承载性状、影响成桩质量的因素及该技术在工程中的具体应用和社会经济效益等问题进行了研究。