欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为了研究月壤的工程力学特性,采用静力触探模型箱进行了0°,15°和30°三种不同贯入倾角下的TJ-1模拟月壤静力触探试验。试验结果表明：静力触探试验终止探头退出土体后,地表产生不同的变形模式,贯入倾角愈大地表变形范围愈大,垂直贯入表层模拟月壤形成以贯入点为对称中心的圆柱形孔洞,倾斜贯入情况下表层模拟月壤形成一个椭圆形的陷落坑;不同贯入倾角下贯入阻力都随贯入深度的增加而增大,同一垂直贯入深度处贯入阻力随贯入倾角的增大而线性增加,可用公式c 1 1q A b表示;垂直静力触探试验贯入阻力随深度的变化趋势可以采用公式c h0q exp[0.16（9）]估算;不同贯入倾角下探头周围的水平土压力均随贯入深度的增加先增大再减小,同一深度处贯入方向前侧土体水平土压力峰值随贯入倾角的增大而线性增加,后侧土体水平土压力随贯入倾角增大而线性减小,二者的变化规律均可用公式h,max 2 2p A b表示;600 mm深度处的垂直土压力终值随贯入倾角的增大而线性减小,可用公式p v,end 0.3179 26.448表示。
英文摘要：
A series of cone penetration tests on TJ-1 lunar simulant under penetration angles of 0°,15° and 30° are carried out using the calibration chamber in order to study the engineering properties of lunar soils.The test results show：（1） after the pull-out of cone tip from the ground,the ground surface exhibits different deformation patterns and the deformation area becomes larger and larger as the penetration angle increases.Cylindrical cavity is formed under vertical penetration condition,while ellipsoidal collapse crater appears under inclined penetration conditions;（2） the cone tip resistance increases with the penetration depth under different penetration angles,and it increases linearly with the increase of the penetration angle at the same vertical penetration depth and can be expressed by equation c 1 1 q A b;（3） the calculation formula c h0 q exp[0.16（9）] can be used to estimate change of the cone tip resistance of vertical penetration with the penetration depth;（4） the horizontal earth pressures around the probe rod increase first and then decrease with the increase of the vertical penetration depth under different penetration angles.The maximum horizontal earth pressure in front of the penetration direction increases linearly with the increase of the penetration angle at the same depth,while that behind the penetration direction presents the opposite trend.They all can be expressed by function h,max 2 2 p A b;and（5） the final value of the vertical earth pressure at depth of 600 mm decreases with the increase of the penetration angle,and their relationship fits the equation p v,end 0.3179 26.448.
同期刊论文项目
同项目期刊论文
Experimental investigation on deformation behavior of TJ-1 lunar soil simulant subjected to principa
Analysis of stress redistribution in soil and earth pressure on tunnel lining using the discrete ele
Modeling shear behavior and strain localization in cemented sands by two-dimensional distinct elemen
Numerical analyses of braced excavation in granular grounds: continuum and discrete element approach
A simple distinct element modeling of the mechanical behavior of methane hydrate-bearing sediments i
Numerical simulation of desiccation cracking in a thin clay layer using 3D discrete element modeling
Contact behavior of idealized granules bonded in two different interparticle distances: An experimen
An analytical approach for the sequential excavation of axisymmetric lined tunnels in viscoelastic r
Study of mechanical behavior and strain localization of methane hydrate bearing sediments with diffe
DEM-aided discovery of the relationship between energy dissipation and shear band formation consider
Unified soil behavior of interface shear test and direct shear test under the influence of lower mov
Analytical Solutions for the Construction of Deeply Buried Circular Tunnels with Two Liners in Rheol
A bond failure criterion for DEM simulations of cemented geomaterials considering variable bond thic
Distinct simulation of earth pressure against a rigid retaining wall considering inter-particle roll
Distinct element simulation of lugged wheel performance under extraterrestrial environmental effects
Combining the Crop Coefficient of Winter Wheat and Summer Maize with a Remotely Sensed Vegetation In
Characterizing Spatiotemporal Variations of Hourly Rainfall by Gauge and Radar in the Mountainous Th
Identifying effective forecast horizon for real-time reservoir operation under a limited inflow fore
Calibration of a distributed flood forecasting model with input uncertainty using a Bayesian framewo
Long-term variability of the carbon balance in a large irrigated area along the lower Yellow River f
Sensitivity of global terrestrial gross primary production to hydrologic states simulated by the Com
Multi-scale evaluation of high-resolution multi-sensor blended global precipitation products over th
Impacts of climate change and vegetation dynamics on runoff in the mountainous region of the Haihe R
期刊信息
位置：