【摘要】 土钉支护是一种比较经济的支护方式,在工程实践中已被广泛应用,但其设计理论仍相对缺乏。目前,土钉支护设计的主要问题是土钉受力计算分析。根据土压力增量与总土钉力相等的原则,以4种不同土压力模式为背景,基于增量法的思想进行对比分析,其结果是不管土钉间距大或小,建议采用规程一和王步云法的土压力模式计算土钉力,它们可以较真实地反映实际情况;而双折线法计算的土钉力偏小,规程二计算的土钉力近似直线分布,与实测的土钉力分布图相差较大,不建议采用这2种方法,但是其对土钉支护中土钉的设计计算具有一定的指导意义。更多还原

【Abstract】 Soil nailing wall is a more economical support method and has been widely used in engineering practice; but the design theory is still relatively deficient. The main problem of soil nailing design is force calculation. This paper according to the increasement of soil pressure equal with the whole soil nail force, based on the incremental method, contrastive analysis four soil pressure modes, the results show a reference to calculate the soil nail force with the first regulation and Wangbuyun method,which can truly reflect the actual situation.The results calculated by double line method and the second regulation approximate linear distribution, which have a difference with the actual force. So it is not advice to use these two methods, but has a certain guiding significance to the design and the calculation of soil nailing retaining wall.更多还原