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This paper presents a simplified trial wedge method for analyzing soil nailed wall stability that uses the problem geometry, soil properties, and the nail tension. Based on limited data from intentionally failed soil nailed walls, the use of a linear slip surface to define a wedge-type failure behind the wall is assumed. Procedures are described for applying the analysis method and its implementation in a spreadsheet-based solution.The trial wedge method was used to backanalyze two test walls intentionally brought to failure:TheAmherstTestWall constructed in varved clay, for which undrained, f50 conditions were assumed; and the Clouterre Test Wall No. 1 built in sand, in which the primary resistance against failure was friction generated by soil weight and nail tension. Both walls had vertical wall faces and level backfill, so the effects of wall geometry were not studied. For theAmherst wall, a series of trial wedges from 45° to 70° was analyzed using a spreadsheet, and the slip surface nearest the face was found to be 60° to the horizontal, consistent with the limit condition observed in the field.The Clouterre wall was similarly analyzed, and the slip surfaces inclined 55° or greater to the horizontal had factors of safety below unity. This is, again, reasonably consistent with the field observations of the failed wall,which indicated a failure surface inclined between 60° and 70° to the horizontal, measured from the base of the wall.The new method provides a rational way for engineers to implement soil nailed wall analysis in a spreadsheet. While it
cannot presently replace existing, more sophisticated analyses based on more complex slip surfaces and mechanics, the simplified trial wedge method provides an inexpensive and accessible method for preliminary wall analysis and/or a supplemental analysis check on more advanced methods.

Answer 1

本文提出了一个简化的试验方法,对楔形土钉墙的稳定性问题,利用几何、土壤性质,倒在地上,橛子张力。基于有限的数据,从土钉墙故意失败,使用一种线性滑动面来定义一个wedge-type失败的那堵墙后面被假定。应用程序都被形容为分析方法及其在spreadsheet-based实施解决方案。审判楔板的方法被用来backanalyze墙壁故意带到两种测试失败:TheAmherstTestWall建于varved粘土,不排水条件下,f50被假设为;Clouterre试验墙1号建于沙子,主要目的在于抵抗运动的失败是摩擦所产生的土壤重量和指甲的张力。两个墙体纵墙的脸和水平的影响回填,所以没有墙几何性质进行了研究。为theAmherst墙,一系列的试验楔子从45°~ 70°的角度出发,分析了使用计算机的电子制表,和最近的脸上滑面上60°时被发现了水平,符合限制条件中观测到的领域。墙是同样的Clouterre滑动的表面进行了分析,并对斜55°或更大的安全水平有因素下的统一。这是一致的,再一次的,合理的沉降值与实测值失败的墙上,这显示了60°破裂面倾斜,70°之间测量了水平的基础上,从墙上。这个新方法提供了一种合理的方式为工程人员实施土钉墙分析中的试算表。当它

不能目前现存的、更精细的分析基于滑动面更复杂的简化试验和力学,楔法提供了廉价和容易的方法分析初步墙和/或补充分析检查更先进的方法

Answer 2

本文提出了一个简化的试验方法,对楔形土钉墙的稳定性问题,利用几何、土壤性质,倒在地上,橛子张力。基于有限的数据,从土钉墙故意失败,使用一种线性滑动面来定义一个wedge-type失败的那堵墙后面被假定。应用程序都被形容为分析方法及其在spreadsheet-based实施解决方案。审判楔板的方法被用来backanalyze墙壁故意带到两种测试失败:TheAmherstTestWall建于varved粘土,不排水条件下,f50被假设为;Clouterre试验墙1号建于沙子,主要目的在于抵抗运动的失败是摩擦所产生的土壤重量和指甲的张力。两个墙体纵墙的脸和水平的影响回填,所以没有墙几何性质进行了研究。为theAmherst墙,一系列的试验楔子从45 ~ 70分析了以电子表格,和最近的脸上滑面上被发现60以水平,符合限制条件中观测到的领域。墙是同样的Clouterre滑动的表面进行了分析,并对斜55或者更大的安全水平有因素下的统一。这是一致的,再一次的,合理的沉降值与实测值失败的墙,这表明一个破裂面斜之间60 - 70以水平、测量从基地的墙上。这个新方法提供了一种合理的方式为工程人员实施土钉墙分析中的试算表。当它不能目前现存的、更精细的分析基于滑动面更复杂的简化试验和力学,楔法提供了廉价和容易的方法分析初步墙和/或补充分析检查更先进的方法。