土的工程绪论土的工程 (97).pdf

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1、3.6.3 Additional stress beneath a rectangular foundation due to a vertical triangular loadRectangular base under verticaltriangular distributed load土力学土力学Soil MechanicsSoil MechanicsProf.Prof.H.J.LiaoH.J.LiaoTake micro-load unit:dp=(x/b)p0dxdyUsing Boussinesq solution of concentrateforce:（Below corn

2、er 1）xyzzx b p x yRpz()23(/)d d2d3d222 5/2035z3(a)dpdA土力学土力学Soil MechanicsSoil MechanicsProf.Prof.H.J.LiaoH.J.LiaoIntegrating within the base area:t1The coefficient of the vertical additionalstress under the corner point 1 of the zerotriangular distributed load side,it can beobtained by referencing

3、the table according tol/b of the foundation base and z/b.b is thelength of the rectangular foundation along thedirection of the triangular distributed load.pxyzzx b px ylb23(/)d dt10222005/2z03(b)dpdA土力学土力学Soil MechanicsSoil MechanicsProf.Prof.H.J.LiaoH.J.Liao）（pp-zt20ct10Additional vertical stress

4、at any depth z below corner 2 of the maximum load side.cThe coefficient of the vertical additional stress underthe corner point with a uniformly distributed load.t2The coefficient of the vertical additional stress under thecorner point 2 of the maximum triangular distributed loadside.土力学土力学Soil MechanicsSoil MechanicsProf.Prof.H.J.LiaoH.J.LiaoStatementStatement:Thanks for some pictures and materials fromthe Internet used in this courseware only for teaching.