共搜索到604条信息，每页显示10条信息，共61页。用时：0小时0分0秒546毫秒
-overturning design and parametric analysis for rigid retaining wall of foundation pit in unsaturated soils ZHANG Changguang1, CHEN Xindong2, ZHU Donghui1 (1. School of Civil Engineering, Chang... wall of foundation pit in unsaturated soils; then the embedment depth equations to meet different anti-overturn stability coefficients were derived at the matric suction with both uniform......
Calculation of rotation and shearing dislocation deformation of underlying shield tunnels due to foundation pit excavation WEI Gang1, 2, ZHANG Xinhai1 (1. College of Civil Engineering and Architecture... tunnel caused by the foundation pit excavation, and the control equation of tunnel deformation was established by combining the principle of minimum potential energy. The formulas for calculating......
for deep foundation pit in rock-soil combination BAI Xiaoyu1, 2, ZHANG Mingyi1, 2, YAN Nan3, WANG Yonghong1, YUAN Haiyang4 (1. College of Civil Engineering, Qingdao University of Technology, Qingdao... features of Qingdao, the cooperative effects and deformation laws of combined support system of fender pile-steel support-anchor cable for deep foundation pit in soil-rock combination were discussed......
of deep foundation pit in soft clays with soil anisotropy being considered. Meanwhile, modifications on spatial effect and time effect of the foundation pit excavation were conducted for the obtained... of foundation pit basal heave. Research results indicate that the analysis formula of basal heave stability deducted when soil anisotropy and spatial-time effect of the foundation pit excavation are considered......
; 文献标志码:A 文章编号:1672-7207(2012)02-0669-06 Earth pressure applied in retaining wall of deep foundation pit considering influence... of retaining wall of deep foundation pit, and the classical earth pressure theory is adopted, but the influence of the deformation of retaining wall on earth pressure is neglected and linear infuence......
was applied to calculate the anchor cable tension in a deep foundation pit engineering. The results show that with the theoretical model, the anchor cable tension is less than that of the traditional... foundation pit; deformation coordination; ribbed beam-pile-anchor support; anchor tension force; stiffness; stability 随着城市超高层建筑的发展,深基坑支护结构设计面临巨大挑战.目前,桩锚支护结构是深基坑最常见的支护形式之一,桩锚支护体系的受力和变形分析是深基坑建设中非常重要的研究课题......
temperatures ranging from 1050 ℃ to 1200 ℃ for 24 h has been investigated by means of potentiostatic critical pitting temperature(CPT).The microstructural evolution and pit morphologies... ℃ to 1150 ℃ and decreased as the temperature further increased to 1200 ℃.The specimens annealed at 1150 ℃ exhibited the highest CPTand the best pitting corrosion resistance.The pit morphologies show......
susceptibility was compared by means of potentiodynamic polarization tests in 3wt% NaCl solution. The pit propagation rate was evaluated in artificial sea water and 3wt% sea salt solution... micro-analysis (EPMA), and optical microscopy (OM). The results indicate that sulfide inclusions in steel are the sites for pit nucleation. The sulphide inclusions vary in shape from short spindle-like......
某矿通风系统测评及改进措施 郭小斌1 (1.赣州有色冶金研究所,江西赣州 341000) 摘要:简述了某矿通风系统的测定,指出了系统的优点及存在的问题,提出了改进措施. 关键词:矿井; 通风系统测定; 改进措施; pit; the determination of ventilation system; improvement; [全文内容正在添加中] ......
Bi-2223带材的连接及特性 () 摘要: 超导动力学系统应用要求线材的长度约1 000m,而传输临界电流密度约为104 A/cm2.然而,目前采用粉末装管(PIT)技术制造这样高临界电流密度的长超导体还是有困难的,因此,超导连接对于制造超导动力系统应用的高性能长超导体是十分有用的. [全文内容正在添加中] ......
