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随着公路桥梁工程的发展,我国的深基坑工程日益增多,无论是技术难度还是工程规模都越来越大。土钉支护技术具有工艺简单、造价低、工期短、便于信息化管理等优点,因此在公路桥梁工程基坑支护中得以广泛应用。本文利用理正超级土钉软件分析不同的土钉长度、土钉间距、土钉倾角对支护边坡的稳定性的影响。研究表明:支护体稳定性随着土钉长度的增加而增加,但增幅逐渐减小;为了保证施工注浆的需要,土钉倾角不宜过小;土钉钉长、间距、倾角对土体稳定性的影响依次减小。
With the development of highway bridge project, the deep foundation pit project in our country is increasing day by day, both the technical difficulty and the project scale are getting bigger and bigger. Soil nailing technology has the advantages of simple technology, low cost, short construction period and convenient information management, so it can be widely used in the foundation pit support of highway bridge engineering. In this paper, the effect of different lengths of soil nails, the distance between soil nails and the angle of soil nails on the stability of supporting slope is analyzed by using Li-Zheng super soil nailing software. The results show that the stability of the support increases with the increase of the length of the soil nail, but the increment decreases gradually. In order to ensure the construction grouting, the inclination angle of the soil nail should not be too small; The influence of stability decreases in turn.