【摘 要】
:
对贵阳市某多地层垂直开挖边坡施工过程进行数值模拟,分析研究边坡开挖时桩锚支护结构变形及受力情况.结果表明:抗滑桩向临空面变形,桩顶位移为最大值;边坡开挖后,桩后岩土作用力呈现先增大后逐渐减小的趋势,各工况下桩后岩土最大作用力的位置基本接近,表明边坡最可能从最大作用力的位置滑动.
【机 构】
:
中铁城建集团第一工程有限公司,山西 太原 030051;贵州大学,贵州 贵阳 550025;贵州联建土木工程质量检测监控中心有限公司,贵州 贵阳 550025
论文部分内容阅读
对贵阳市某多地层垂直开挖边坡施工过程进行数值模拟,分析研究边坡开挖时桩锚支护结构变形及受力情况.结果表明:抗滑桩向临空面变形,桩顶位移为最大值;边坡开挖后,桩后岩土作用力呈现先增大后逐渐减小的趋势,各工况下桩后岩土最大作用力的位置基本接近,表明边坡最可能从最大作用力的位置滑动.
其他文献
采用固相法制备(1-x) N0.5Bi4.5Ti4O15-xBaTiO3 (NBT-BT,x=0,0.05,0.10,0.20,0.30,0.40)高温铋层状压电陶瓷材料.用X射线衍射(XRD)、SEM扫描电镜(SEM),介电和阻抗温谱等测试方法研究了BaTiO3掺杂量对Na0.5Bi4.5Ti4O15陶瓷晶体结构和电性能的影响;结果表明:当x≤0.20时,NBT--BT陶瓷材料为单一的铋层状结构相,居里温度Tc逐渐下降;随着BaTiO3掺杂量的增加,压电常数逐渐增大后逐渐减小,介电损耗变化趋势与之相反,
The aim of this article is to assess the outcomes of a low-intensity extracorporeal shock wave therapy(LiESWT)protocol for the treatment of Peyronie\'s disease(PD).Patients treated for PD were prospectively recorded,and data were retrospectively reviewe
The purpose of our study is to investigate the prognostic value of phosphatase and tensin homolog on chromosome 10(PTEN)expression in patients with de novo metastatic castration na?ve prostate cancer(mCNPC).A total of 205 patients with mCNPC at Fudan Univ
Semen analysis is characterized by high levels of intra-and inter-laboratory variability,due to a low level of standardization,high subjectivity of the assessments,and problems with automated procedures.To improve consistency of laboratory results,quality
Environmental factors may negatively contribute to a progressive worsening of semen quality,and differences in semen quality may result from different environmental exposures(regional differences)or lifestyle differences.Heavy metals are factors with a co
Acephalic spermatozoa syndrome is a rare type of teratozoospermia that severely impairs the reproductive ability of male patients,and genetic defects have been recognized as the main cause of acephalic spermatozoa syndrome.Spermatogenesis and centriole-as
Varicocele adversely affects semen parameters.However,the effect of varicocele repair on the sperm retrieval rate and testicular histopathological patterns in men with nonobstructive azoospermia has not been widely reported.We retrospectively assessed the
This study analyzed the effects of male age and abstinence time on semen quality and explored the best abstinence time for Chinese males among different age groups.Semen parameters,including sperm kinetics,morphology,and DNA fragmentation index(DFI),were
裂缝是大体积混凝土结构施工过程中的一个重要问题.混凝土中出现的绝大多数裂缝通常是由温度效应引起的.因此,有必要控制和调节温度,防止开裂.块状结构温度区的形成受大小、水泥消耗量及其最大热释放量、待铺设混凝土的温度等许多因素的影响.本文考虑了大体积混凝土结构的尺寸和施工进度对其温度状态的影响,使用计算机程序Midas civil 2011计算了温度状况,获得了大体积混凝土和不同尺寸大体积混凝土柱的最高温度.考虑不同因素值下可能断裂的分析.
本文采用最大骨料粒径均为dmax=20 mm的中、低热水泥混凝土楔入劈拉试件,通过外推法得出无尺寸效应的拉伸强度ft和断裂韧度KIC,并与试验得出的强度值和双K断裂理论计算得出的断裂韧度进行比较,验证了采用外推法确定中、低热水泥混凝土楔入劈拉试件的拉伸强度值ft和断裂韧度值KIC的适用性和可靠性.同时得出了中、低热水泥混凝土楔入劈拉试件在采用外推法确定拉伸强度ft和断裂韧度KIC时较为合适的虚拟裂缝值.