水平荷载作用下单桩非线性m法试验研究   总被引：13，自引：5，他引：13  

王梅  楼志刚  李建乡  赵京 《岩土力学》2002,23(1):23-26

通过对大量模型试验结果的分析，提出了简便合理的水平荷载作用下单桩的计算方法。该方法将常用m法中单一m值与位移建立指数关系，并由bm有k两参数来描述。将这一关系引和常用单桩m法计算中，则计算结果可考虑单桩非线性响应影响。  相似文献   

LONG TERM EFFECTS OF REHABILITATION MEASURES ON BED LOAD TRANSPORT AT THE SALZACH RIVER     

Sven HARTMANN Institute for Hydrosciences  German Armed Forces University Munich  Neubiberg  Germany. 《国际泥沙研究》2001,16(2)

1 BASIC PROBLEMFlood protecton, sPreaing of settlements and occuPatin Of river valleys were maor reasons to damand lindt rivers throughout Europe in the ndd 19th century. Engineers of those days often knew very wellabout the effects of their plannings: shortening the river length would accelerat the now and thusencourage the erosion into the river's sedAnents. Two vital advanages could be obtalned from that kindof constrUction, landuse of the fOrmer flood plains on the one and increasin…  相似文献   

RESUSPENSION OF FINE SEDIMENT IN RESERVOIRS - A CASE STUDY OF THE LOWER INN RIVER     

Thomas ELSNERand Sven HARTMANN Institute for Hydrosciences  German Armed Forces University Munich  Neubiberg  Germany. Institute for Hydrosciences  German Armed Forces University Munich  Neubiberg  Germany. 《国际泥沙研究》2001,16(2)

1 THE LOWhR unR INNThe Inn river has its source in the alPine region of the GraubUnden canton of Switzerand. ThecatChment area of about 260(X} kIn2 includes mountains of the central Alpes up to 40(X) m. The river runs5l7 km thrOugh the countries of SwitZerand, Austria and Germany on itS way into the Danube mver. Thedischarge of the river at its mouth in the city of Passau is mainly infiuenced by the snow melt in themountainous catchment area and vches between apProx. 200 m3ls durin…  相似文献   

常规电法在桥基勘察中的应用与效果          下载免费PDF全文

刘宏利  周德泉等 《地质与勘探》2001,37(6):88-90

以某高速公路桥基勘察为例，介绍了常规电法在桥基选址－初步勘察中的应用，并认为对具备一定地球物理前提的岩（土）体，该法效果明显，值得推广。  相似文献   

地基承载力的试验研究   总被引：7，自引：3，他引：7  

吴哲滨  于刚 《工程地质学报》2001,9(3):277-281

进行地基承载力的试验研究, 对于充分利用和挖掘地基潜力、合理选择地基持力层、提高勘察工作质量、促进岩土工程勘察技术的发展具有重要的现实意义。本文结合唐山钢铁公司第二炼铁厂 2 5 6 0m3 高炉勘察实例, 系统介绍了地基承载力的试验研究过程, 并应用了-种有推广价值的试验技术室内模拟载荷试验。  相似文献   

细颗粒对粗颗粒床沙质输沙率影响的初步研究   总被引：4，自引：2，他引：4       下载免费PDF全文

钟德钰  王士强  王光谦 《水科学进展》2001,12(1):1-6

考虑高含沙紊流涡团中细颗粒絮凝形成网络结构对粗颗粒运动影响后,建立了粗颗粒悬移质泥沙的输沙率计算方法.该方法中包含的细颗粒影响项反映了流域因素对粗颗粒泥沙输沙的影响,证明细颗粒的影响是引起多沙河流中“多来多排”现象的一个重要因素.与黄河实测资料的对比表明,该计算方法能够反映高含沙紊流输沙时随流域细颗粒增多粗颗粒悬移质输沙率相对增大的现象,并具有较好的计算精度  相似文献   

桩的荷载传递函数法及其在西安地区旋挖钻孔灌注桩中的应用   总被引：2，自引：0，他引：2  

邢心魁  张炜  张顺强 《岩土工程技术》2001,(1):18-22

首先对桩的荷载传递法进行了分析，通过对工程实测资料的研究，发现西安饱和黄土地基中旋挖钻孔灌注桩桩侧摩阻力传递函数符合双曲线规律，并探讨了双曲线模型参数的理论计算方法。最后结合一工程实例证明利用荷载传递函数法，根据土质参数来计算单桩Q?s曲线是可行的。  相似文献   

对粉喷桩检验方法的认识和探讨     

叶卫兵 《安徽地质》2001,11(3):235-238

介绍了检验复合地基承裁力及桩身完整性的主要方法静裁荷试验、低应变反射波法，并对检测应满足的前提条件进行了认识和探讨。  相似文献   

Elastic waves in visco-elastic half-space generated by various vehicle loads   总被引：2，自引：0，他引：2  

H. -H. Hung  Y. -B. Yang   《Soil Dynamics and Earthquake Engineering》2001,21(1):1

In this paper, the response of a visco-elastic half-space subjected to moving loads with static and dynamic components is investigated. Four types of vehicle loads are considered, including the moving point load, uniformly distributed wheel load, elastically distributed wheel load, and a train load simulated as a sequence of elastically distributed wheel loads. In each case, the influence of the moving loads traveling in the subsonic, transonic and supersonic ranges on the dynamic responses of the half-space is studied. The parametric study conducted herein enables us to grasp insight into the mechanism of wave propagation for a visco-elastic half-space under moving loads.  相似文献   

Sustainable landscape management in Slovenia: Environmental improvements for the Velenje coal mining community 1991–2000     

Natalija Špeh  Dušan Plut 《GeoJournal》2001,55(2-4):569-578

The Velenje area (almost 200 km² with over 31,000 inhabitants) is based on the Šalek Valley, which became a leading area of industrialisation and urbanisation after the Second World War, with consequent pollution problems. Various industrial plants polluted the river Paka while more serious hazards arose through the coal mine which is a still causing landscape subsidence and the thermal power station in the neighbourhood of Šoštanj which is a major source of sulphur dioxide and nitrogen oxide pollution. In 1987 there was an ecological protest which marked the beginning of a sustainable development strategy for the community. During the past decade programmes have dealt with the degradation of air, soil and water to achieve cleaner air, a transformation in landuse and enhancement the river's formerly weak self-purifying capabilities. This article examines the changes in the valley since the attention of the authorities was drawn to the deterioration of living conditions. Despite the pressures of transition which have seen unemployment rising to over ten percent, significant environmental improvements have been made and the area stands as a model for the rest of the country. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献