高挡墙的设计与稳定计算探讨

Study on Design and Stability Calculation of High Retaining Wall

在交通土建工程中考虑尽量少占用土地经常需设置挡土墙,挡土墙设计形式因地形及地质情况而异。本文根据浙江省舟山连岛工程桃夭门大桥连接线工程的特点及走向,结合当地石料丰富的特点,设计出仰斜式挡土墙,并通过对计算结果进行分析与研究发现:在地质情况较好条件下可以考虑采用仰斜式挡土墙,设计时可适当调整挡土墙墙背及墙面坡度,增加墙趾级数及在刚性角范围内加大尺寸,以调整基底应力在地基承载范围内。仰斜式挡土墙具有抗倾、抗滑、平衡地基应力值和降低工程造价的特点,值得在地质情况好、石料丰富地区推广应用。

Retaining wall needs to be set considering occupying less land in traffic and civil engineering, whose design forms depend on terrain and geological condition. According to characteristics and trend of Taoyaomen Connecting Project of Zhoushan Island-mainland Link Project in Zbejiang Province, combining with characteristics of local abundant stone, oblique earth-retaining wall was designed and through analysis and study on calculating results it was found that oblique earth-retaining wall could be adopted under the ciretunstance of better geological condition. Therefore, wall back of retaining wall and slope of wall surface, could be adjusted when designed. In addition, rank of toe of wall was increased and the size was enlarged in the range of rigid angle to adjust basement stress into the bearing range of foundation. Oblique earth-retaining wall had several features, which were anti-overturning, anti-slide, balancing basement stress and decreasing engineering cost. So it was worthy to be applied in area of good geological condition and abundant stone.