Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 9 of 9
Full-Text Articles in Statistical Methodology
Static Performance And Stability Of A Multi-Span Hybrid Continuous Rigid Frame Bridge With High Piers, Huang Yu, Liu Guanyu, Yi Jianbo, Xing Xuan, Su Miao, Peng Hui
Static Performance And Stability Of A Multi-Span Hybrid Continuous Rigid Frame Bridge With High Piers, Huang Yu, Liu Guanyu, Yi Jianbo, Xing Xuan, Su Miao, Peng Hui
Journal of China & Foreign Highway
In order to study the static performance and stability of a steel-concrete composite continuous rigid frame bridge in Suichang,Zhejiang Province,a single girder and girder lattice finite element model for the whole bridge was established by using Midas Civil,and a local solid finite element model was established by using Ansys.A detailed analysis of the structural displacement and stress state of the bridge in use and the local stress in the solid section of the pier and girder under different loads was carried out.The influence of the pile-bottom restraint stiffness and pier-girder connection form on the overall stability of the bridge was …
Stability Analysis Of High And Steep Bank Slope Of Jinqi Bridge On Wudang‑Changshun Expressway, Wang Hao
Stability Analysis Of High And Steep Bank Slope Of Jinqi Bridge On Wudang‑Changshun Expressway, Wang Hao
Journal of China & Foreign Highway
Jinqi Bridge on the Wudang-Changshun Expressway in Guizhou Province crosses the Maotiao River，and the poor geological conditions such as dangerous rock mass and collapse accumulation body on the bank slope of the river are relatively developed，which seriously affects the site selection and safety of the bridge.In order to study the stability of the high and steep bank slope of the bridge，the paper explored the main poor geological conditions in the bridge site through a comprehensive air-ground investigation.By means of numerical analysis，InSAR，and other technologies，the movement range of dangerous rock mass on the bank slope was quantitatively evaluated.The stability and deformation mode …
Research On Gravity Anchorage Foundation Of Dadu River Bridge In Luding, Zhou Ti Ng, Tao Qiyu, Li Zejun
Research On Gravity Anchorage Foundation Of Dadu River Bridge In Luding, Zhou Ti Ng, Tao Qiyu, Li Zejun
Journal of China & Foreign Highway
Moraine soils formed during th e Qua ternary glacial period are widely distributed in the west of China，exhibiting good mechanical properties and deep overburden.This paper studied the Dadu River bridge in Luding and investigated the influence of various foundation forms on anchorage stability in the case of considering moraine soils as the soil supporting layer of gravity anchorage foundation through theoretical analysis and numerical simulation.The findings suggest that a slant expanded foundation with a notched sill demonstrates good force-bearing capability and is cost-effective.These results can provide a reference for similar construction projects in the west of China.
Study On Stability Analysis And Treatment Of A Expressway Landslide, Huang Hongchao
Study On Stability Analysis And Treatment Of A Expressway Landslide, Huang Hongchao
Journal of China & Foreign Highway
In highway construction of mountainous areas, landslides are easily triggered due to the complex geological conditions, thereby causing serious economic loss and even casualties. Therefore, the study of landslide treatment schemes has caught increasingly more attention from scholars. By taking the giant landslide treatment on a highway of southeastern Yunnan as an example, this paper analyzed the process and cause of giant landslide formation, and then conducted inverse calculations to determine the stability analysis parameters of landslides via combining the topography and geology and slope state before and after slope excavation. Finally, according to the calculation results of the residual …
Macro And Micro Analysis Of Influence Mechanism Of Anti⁃Slide Pile Position On Slope Stability, Liu Ping, Wang Meijing, Zhang Shaoqiang, Zhang Yongsheng, Wang Denghua, Li Dongdong
Macro And Micro Analysis Of Influence Mechanism Of Anti⁃Slide Pile Position On Slope Stability, Liu Ping, Wang Meijing, Zhang Shaoqiang, Zhang Yongsheng, Wang Denghua, Li Dongdong
Journal of China & Foreign Highway
In order to study the influence mechanism of anti-slide pile position on the stability of the slope and optimize the supporting parameters of anti-slide piles reasonably, a three-dimensional continuous and discrete coupled numerical model of the slope was established based on the finite difference theory and discrete element theory of a highway cut slope in southwest China. The influence mechanism of anti-slide pile position on the stability of the cut slope was analyzed from macro and micro perspectives. The results show that the force chain of particles on the sliding surface is thin at the top and dense at the …
Study On Treatment Of Karst Foundation By Dynamic Compaction, Lyu Jiang, Zhao Hui, Yang Biao
Study On Treatment Of Karst Foundation By Dynamic Compaction, Lyu Jiang, Zhao Hui, Yang Biao
Journal of China & Foreign Highway
Dynamic compaction is a commonly used method for treating karst foundations with cavities; however, the design parameters of dynamic compaction under different working conditions lack clear standards. This paper employs the finite element software Abaqus to simulate the effects of surrounding rock quality and karst roof thickness on the stability of karst cave roofs during dynamic compaction treatment. The results indicate that the vertical displacement and maximum tensile stress of karst cave roofs are negatively correlated with roof thickness. For Grade II and III surrounding rocks with better properties, no cave collapse occurred after dynamic compaction treatment. In contrast, for …
Study On Countermeasures And Genetic Analysis Of Sloping Bridge Pile Hole Wall Failure, Yang Hua, Yin Xiaotao
Study On Countermeasures And Genetic Analysis Of Sloping Bridge Pile Hole Wall Failure, Yang Hua, Yin Xiaotao
Journal of China & Foreign Highway
The stability of slopes and the safety of bridge piles are interdependent, and ensuring the safety of sloping terrain is crucial for the safe construction of bridge piles. Based on three collapsed pile sections of the Huadizhai No. 2 Bridge, this paper utilized geological surveys to design initial terrain and altered terrain slope stability calculation conditions, along with horizontal compensation force calculation conditions under a safety standard of 1.35. By integrating geological analysis, slope stability assessment, and compensation force evaluations, the causes of pile hole collapse and corresponding countermeasures were analyzed. The results show that under the initial terrain, the …
Experimental Study On Characteristics And Stability Of Different Aged Steel Slag Aggregate, Zhang Hongri, Wang Guiyao, Feng Jian, Lan Tianzhu, Wu Tao
Experimental Study On Characteristics And Stability Of Different Aged Steel Slag Aggregate, Zhang Hongri, Wang Guiyao, Feng Jian, Lan Tianzhu, Wu Tao
Journal of China & Foreign Highway
Steel slag aggregate has good building material properties, but the utilization rate of steel slag in road engineering is low at present. In this paper, the chemical composition, basic physical and mechanical indexes, f⁃CaO, f⁃MgO, pulverization rate, CRB expansion rate, and other indexes of open-air aged steel slag aggregate in Fangchenggang, Guangxi Province for 0, 6, and 12 months were studied. The results show that the physical and mechanical properties of steel slag aggregate basically meet the requirements of road base materials and subgrade fillers, but the indexes of f⁃CaO, pulverization rate, and CRB expansion rate of steel slag aggregate …
Experimental Study On Characteristics And Stability Of Different Aged Steel Slag Aggregate, Zhang Hongri, Wang Guiyao, Feng Jian, Lan Tianzhu, Wu Tao
Experimental Study On Characteristics And Stability Of Different Aged Steel Slag Aggregate, Zhang Hongri, Wang Guiyao, Feng Jian, Lan Tianzhu, Wu Tao
Journal of China & Foreign Highway
Steel slag aggregate has good building material properties, but the utilization rate of steel slag in road engineering is low at present. In this paper, the chemical composition, basic physical and mechanical indexes, f⁃CaO, f⁃MgO, pulverization rate, CRB expansion rate, and other indexes of open-air aged steel slag aggregate in Fangchenggang, Guangxi Province for 0, 6, and 12 months were studied. The results show that the physical and mechanical properties of steel slag aggregate basically meet the requirements of road base materials and subgrade fillers, but the indexes of f⁃CaO, pulverization rate, and CRB expansion rate of steel slag aggregate …