A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Model test device and test method for high-speed railway subgrade passing through karez
The invention relates to a model test device for a high-speed railway subgrade passing through a karez. The device is mainly characterized in that a test box body is mounted below a cross beam of a reaction frame, and organic glass plates are arranged at the front part and the rear part of the test box body; the box body is filled with model soil in which tracer particles are buried; and a PVC vertical pipe and a PVC longitudinal pipe are arranged in the model soil; a railway subgrade is arranged on the top surface of the model soil; multiple layers of stiffened strips are arranged in the railway subgrade, a concrete base plate is laid on the upper portion of the railway subgrade, and a jack on the cross beam is arranged over a concrete plate; a vibration exciter and a displacement meter are arranged on the concrete base plate; three strain gauges are arranged on the model geogrids of the stiffened strips; three soil pressure boxes are vertically arranged on the railway subgrade, and three lateral soil pressure boxes and two strain gauges are arranged on the PVC vertical pipe; and a particle image velocimeter is arranged on the outer side of the test box body. According to the invention, the mechanical properties of the subgrade and the karez foundation under the train load can be obtained, so that a test basis is provided for reinforcement design and construction of the subgrade and the foundation of the high-speed railway in the karez region.
一种通过坎儿井的高速铁路路基的模型试验装置，其构成主要是：试验箱体安装于反力架的横梁下方，其前、后为有机玻璃板；箱体内填筑埋有示踪粒子的模型土，且模型土内设有PVC竖管和PVC纵管；模型土的顶面设有铁路路基；铁路路基内部设置有多层加筋条，其上部铺设有混凝土垫板，横梁上的千斤顶位于混凝土板的正上方；混凝土垫板上还有激振器、位移计，加筋条的模型土工格栅上布置三个应变计，铁路路基竖向设置3个土压力盒，PVC竖管设置三个侧向土压力盒和两个应变计；试验箱体外侧设有粒子图像测速仪。本发明能得出列车载荷下，路基与坎儿井地基的力学特性，从而为通过坎儿井地区高速铁路路基和地基的加固设计和修建，提供试验依据。
Model test device and test method for high-speed railway subgrade passing through karez
The invention relates to a model test device for a high-speed railway subgrade passing through a karez. The device is mainly characterized in that a test box body is mounted below a cross beam of a reaction frame, and organic glass plates are arranged at the front part and the rear part of the test box body; the box body is filled with model soil in which tracer particles are buried; and a PVC vertical pipe and a PVC longitudinal pipe are arranged in the model soil; a railway subgrade is arranged on the top surface of the model soil; multiple layers of stiffened strips are arranged in the railway subgrade, a concrete base plate is laid on the upper portion of the railway subgrade, and a jack on the cross beam is arranged over a concrete plate; a vibration exciter and a displacement meter are arranged on the concrete base plate; three strain gauges are arranged on the model geogrids of the stiffened strips; three soil pressure boxes are vertically arranged on the railway subgrade, and three lateral soil pressure boxes and two strain gauges are arranged on the PVC vertical pipe; and a particle image velocimeter is arranged on the outer side of the test box body. According to the invention, the mechanical properties of the subgrade and the karez foundation under the train load can be obtained, so that a test basis is provided for reinforcement design and construction of the subgrade and the foundation of the high-speed railway in the karez region.
一种通过坎儿井的高速铁路路基的模型试验装置，其构成主要是：试验箱体安装于反力架的横梁下方，其前、后为有机玻璃板；箱体内填筑埋有示踪粒子的模型土，且模型土内设有PVC竖管和PVC纵管；模型土的顶面设有铁路路基；铁路路基内部设置有多层加筋条，其上部铺设有混凝土垫板，横梁上的千斤顶位于混凝土板的正上方；混凝土垫板上还有激振器、位移计，加筋条的模型土工格栅上布置三个应变计，铁路路基竖向设置3个土压力盒，PVC竖管设置三个侧向土压力盒和两个应变计；试验箱体外侧设有粒子图像测速仪。本发明能得出列车载荷下，路基与坎儿井地基的力学特性，从而为通过坎儿井地区高速铁路路基和地基的加固设计和修建，提供试验依据。
Model test device and test method for high-speed railway subgrade passing through karez
通过坎儿井的高速铁路路基的模型试验装置及试验方法
LIU XIANFENG (author) / ZHANG YANFEI (author) / YANG WENTENG (author) / YUAN SHENGYANG (author) / CHEN WEIZHI (author) / PAN GAOFENG (author) / GAO ZEFEI (author) / CHEN ZHIMING (author) / YANG JIAN (author) / LI XIAOCHEN (author)
2020-09-01
Patent
Electronic Resource
Chinese
Reinforcing method for high-speed railway karez foundation
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| British Library Online Contents | 2016
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