摘要
为研究山区桥梁工程中斜坡、桥桩、弃渣工程的相互影响及由此造成的安全难题,依托某山区高速公路斜坡桥梁建设路段,利用Phase2D软件,建立考虑弃渣堆填过程的数值模型,计算分析弃渣对斜坡变形稳定和桥桩结构内力的影响。结果表明,弃渣在堆高造成的附加荷载不超过斜坡地基承载力的前提下,对斜坡的整体变形稳定有利,但需及时控制弃渣边坡坡面稳定性;弃渣与斜坡结合部位会产生局部拖坡变形,桥桩在其范围之外则弃渣对桥桩结构安全无影响,在之内则有影响。该区桥桩、斜坡、弃渣联合整治的综合安全控制参数为堆填高度≤30m,与桥桩最短距离≥40m。
In order to study the mutual influence of slopes,bridge piles,and waste slag engineering in mountain bridge engineering and the resulting safety problems,relying on the construction of slope bridges on a mountain expressway,Phase2D software was used to establish a numerical model considering the process of waste slag landfilling,and the influence of waste slag on slope deformation stability and internal force of bridge pile structure were calculated and analyzed.The results show that,on the premise that the additional load caused by the pile height does not exceed the bearing capacity of the slope foundation,it is beneficial to the overall deformation stability of the slope,but it is necessary to control the slope stability of the waste slag slope in time.The junction of the waste slag and the slope will produce local drag deformation,and the waste slag of the bridge piles outside its range has no effect on the safety of the bridge pile structure,but it will have an impact within it.The comprehensive safety control parameters for the joint remediation of bridge piles,slopes and waste slag in this area are that the height of the landfill is less than 30m,and the shortest distance from the bridge piles is moer than 40m.
作者
陈伟
田明
邹云丽
徐伟然
尹小涛
CHEN Wei;TIAN Ming;ZOU Yunli;XU Weiran;YIN Xiaotao(Dali Dayang Eryun Expressway Co.,Ltd.,Dali,Yunnan 671000,China;State Key Laboratory of Geo-mechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hubei 430071,China)
出处
《施工技术（中英文）》
CAS
2022年第4期49-52,87,共5页
Construction Technology
基金
云南省交通运输厅科技创新及示范项目(云交科教便〔2020〕98号)
交通运输部科技示范项目(2017-09)。
