城市建设理论研究（电子版）
城市建設理論研究（電子版）
성시건설이론연구（전자판）
ChengShi Jianshe LiLun Yan Jiu
2015年
16期
6008-6010
,共3页
高速公路%加筋土挡墙%变形特性%筋材受力%数值分析
高速公路%加觔土擋牆%變形特性%觔材受力%數值分析
고속공로%가근토당장%변형특성%근재수력%수치분석
highway%reinforced eart hretaining wall%deformation feature%geo-grid force%numerical analysis
加筋土挡墙是一种解决高填方路堤及边坡等问题的有效措施。本文结合某公路加筋土挡墙工程为研究背景，借助数值分析方法和现场实测数据对加筋土挡墙变形特性及筋材受力特性进行了研究。分析结果表明：挡墙下部筋材位置土压力值较上层筋材位置大，土压力最大值位置在距挡墙（0.3~0.4）倍的墙高位置处；筋材上的拉应力分布与筋材受力大小有关，沿筋材方向在0~1m范围内近似呈均匀分布，在1.0m以外呈指数型分布；在面墙附近拉应变值最大，沿筋长方向拉应变非线性减小；加筋挡墙水平变形曲线沿深度呈“胖肚”形分布，最大水平变形出现在约1/3墙高处，大小约为16.5mm；墙顶荷载对挡墙及土体变形影响较大，建议墙顶荷载取30kPa作为加筋土挡墙的荷载限值。研究成果可为加筋土挡墙结构设计及施工提供参考意义。
加觔土擋牆是一種解決高填方路隄及邊坡等問題的有效措施。本文結閤某公路加觔土擋牆工程為研究揹景，藉助數值分析方法和現場實測數據對加觔土擋牆變形特性及觔材受力特性進行瞭研究。分析結果錶明：擋牆下部觔材位置土壓力值較上層觔材位置大，土壓力最大值位置在距擋牆（0.3~0.4）倍的牆高位置處；觔材上的拉應力分佈與觔材受力大小有關，沿觔材方嚮在0~1m範圍內近似呈均勻分佈，在1.0m以外呈指數型分佈；在麵牆附近拉應變值最大，沿觔長方嚮拉應變非線性減小；加觔擋牆水平變形麯線沿深度呈“胖肚”形分佈，最大水平變形齣現在約1/3牆高處，大小約為16.5mm；牆頂荷載對擋牆及土體變形影響較大，建議牆頂荷載取30kPa作為加觔土擋牆的荷載限值。研究成果可為加觔土擋牆結構設計及施工提供參攷意義。
가근토당장시일충해결고전방로제급변파등문제적유효조시。본문결합모공로가근토당장공정위연구배경，차조수치분석방법화현장실측수거대가근토당장변형특성급근재수력특성진행료연구。분석결과표명：당장하부근재위치토압력치교상층근재위치대，토압력최대치위치재거당장（0.3~0.4）배적장고위치처；근재상적랍응력분포여근재수력대소유관，연근재방향재0~1m범위내근사정균균분포，재1.0m이외정지수형분포；재면장부근랍응변치최대，연근장방향랍응변비선성감소；가근당장수평변형곡선연심도정“반두”형분포，최대수평변형출현재약1/3장고처，대소약위16.5mm；장정하재대당장급토체변형영향교대，건의장정하재취30kPa작위가근토당장적하재한치。연구성과가위가근토당장결구설계급시공제공삼고의의。
Reinforced soil retaining wall is a kind of effective to solve the problem of high fill embankment and slope measures.In this paper, combined with a highway reinforced soil retaining wall project as the research background, with the aid of numerical analysis method and the deformation characteristics of the retaining wal and data col ected in-situ reinforcement material mechanical properties are studied, the analysis results show that the lower part of the retaining wall reinforcement material earth pressure value is the upper reinforcement material location, soil pressure maximum position from the retaining wal (0.3~0.4) H location;Reinforced materials on the tensile stress distribution and the size of the reinforcement materials stress, along the direction of reinforcement material in 0~1m within the scope of the approximate uniform distribution, exponential distribution outside the 1.0m;Maximum tensile strain values near the wall, along the reinforcement length direction tensile strain nonlinear decreasing; Reinforced retaining wall horizontal deformation along the depth are "fat bel y" shape distribution, the maximum horizontal deformation occurred to about one-third of the wall height, the size is about 16.5mm. Wall had a greater influence on the load on retaining wal and soil deformation;suggest the wal load take 30kpa as load limit of reinforced soil retaining wall. Research results can provide reference for design and construction of reinforced soil retaining wall structure.
