inductive fault analysis is a technique for enumerating likely bridges that is limited by the weighted critical area computation. Based on the rectangle model of a real defect and mathematical morphology, an efficient...inductive fault analysis is a technique for enumerating likely bridges that is limited by the weighted critical area computation. Based on the rectangle model of a real defect and mathematical morphology, an efficient algorithm is presented to compute the weighted critical area of a layout. The algorithm avoids the need to determine which rectangles belong to a net and the merging of the critical area corresponding to a net pair. Experimental resuits showing the algorithm's performance are presented.展开更多
基于64组超高性能混凝土(ultra high performance concrete,UHPC)抗压性能试验数据,分别建立了峰值压应变ε0、立方体抗压强度fcu与轴心抗压强度fc之间的关系以及弹性模量Ec与立方体抗压强度fcu的关系;基于复合材料力学,建立了受拉区UHP...基于64组超高性能混凝土(ultra high performance concrete,UHPC)抗压性能试验数据,分别建立了峰值压应变ε0、立方体抗压强度fcu与轴心抗压强度fc之间的关系以及弹性模量Ec与立方体抗压强度fcu的关系;基于复合材料力学,建立了受拉区UHPC等效拉应力;基于平截面假定,建立了UHPC梁正截面受弯承载力计算公式,推导了受压区等效矩形应力图形参数、计算公式,并结合UHPC受压本构确定等效矩形应力图形参数。通过28根试验梁的相关数据,验证UHPC梁正截面受弯承载力计算公式及等效矩形应力图形参数取值的可行性。研究结果表明,等效矩形应力图形参数取值较为合理,梁正截面受弯承载力计算值与试验值吻合良好。展开更多
文摘inductive fault analysis is a technique for enumerating likely bridges that is limited by the weighted critical area computation. Based on the rectangle model of a real defect and mathematical morphology, an efficient algorithm is presented to compute the weighted critical area of a layout. The algorithm avoids the need to determine which rectangles belong to a net and the merging of the critical area corresponding to a net pair. Experimental resuits showing the algorithm's performance are presented.
文摘基于64组超高性能混凝土(ultra high performance concrete,UHPC)抗压性能试验数据,分别建立了峰值压应变ε0、立方体抗压强度fcu与轴心抗压强度fc之间的关系以及弹性模量Ec与立方体抗压强度fcu的关系;基于复合材料力学,建立了受拉区UHPC等效拉应力;基于平截面假定,建立了UHPC梁正截面受弯承载力计算公式,推导了受压区等效矩形应力图形参数、计算公式,并结合UHPC受压本构确定等效矩形应力图形参数。通过28根试验梁的相关数据,验证UHPC梁正截面受弯承载力计算公式及等效矩形应力图形参数取值的可行性。研究结果表明,等效矩形应力图形参数取值较为合理,梁正截面受弯承载力计算值与试验值吻合良好。