英语翻译For the purpose of estimating the cracking moment of the
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英语翻译
For the purpose of estimating the cracking moment of the walls,another series of five prisms were tested by third-point loading method described in ASTM _2002d_.Prisms with the height of seven blocks and width of one block were tested such as to locate the two point loads and supports in the middle of the block and also to provide for sufficient span-to-depth ratio(ASTM 2002d).The midspan deflection of the prisms was measured during each test using a potentiometer to establish the loaddeflection curves.The average flexural bond strength of the prisms,also referred to as modulus of rupture (R),was found to be 1.11 MPa with a coefficient of variation of 9.5%,disregarding the result of the last prism (see Table 2).The last prism failed at a considerably weak bed joint outside of the constant moment zone.Table 3 summarizes the properties of the masonry assemblage and its constituents.
For the purpose of estimating the cracking moment of the walls,another series of five prisms were tested by third-point loading method described in ASTM _2002d_.Prisms with the height of seven blocks and width of one block were tested such as to locate the two point loads and supports in the middle of the block and also to provide for sufficient span-to-depth ratio(ASTM 2002d).The midspan deflection of the prisms was measured during each test using a potentiometer to establish the loaddeflection curves.The average flexural bond strength of the prisms,also referred to as modulus of rupture (R),was found to be 1.11 MPa with a coefficient of variation of 9.5%,disregarding the result of the last prism (see Table 2).The last prism failed at a considerably weak bed joint outside of the constant moment zone.Table 3 summarizes the properties of the masonry assemblage and its constituents.
为了估算墙体的开裂弯矩,进行了另外一个系列(5个棱柱体试块用三点加载法,在ASTM2002d中有描述)的试验.棱柱体有7个试块高,1个试块宽,这样可以布置两个荷载施加点和支撑点在试块中间,来提供足够的跨高比(见ASTM2002d).每次试验中,都用电位计(不知道是不是这个,应该是一种测微位移的仪器)棱柱体试块跨中变形,以便建立荷载位移曲线.棱柱体的平均弯曲强度,也叫断裂模量(R),为1.11MPa,变异系数为9.5%,最后一个试块除外(见表2).最后一个试块的试验失败了,因为在恒定弯矩区域外明显的薄弱点.表3总结了试块的性质总结和成分构成.
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