摄像测量在建筑拆除力学研究中的应用

建筑物的爆破拆除坍塌是个复杂的力学过程,通过近景摄像测量能精确地认识各时刻建筑物倒塌的姿态变化,为创立建筑拆除动力学奠定了实践的基础。列举了3个100~150 m的高烟囱和8层、23层的框架类两座楼房爆破拆除的摄像测量,采用了三维、二维和一维的直接线性变换法,克服了摄像中的畸变误差;编制了鼠标点击的半自动图像数字化处理计算程序,简化了数字化过程。由此创立了多体离散动力学分析(MBDA),丰富了变拓扑多体系统动力学,在建筑物拆除工程应用中检验了建筑拆除力学是正确的,可以应用的。

Vseing Photogrammetric Measurement to Study Mechanics Demolishing Building

The toppling of building demolished by blasting is process of complex mechanics. The varying posture of toppling building at each time is studied accurately by near-point photogrammetric measurement,by that in order to create dynamics demolishing building the practice foundation has been found.In the article the photogrammetric measurement of building demolished by blasting of 3 chimneys high 100~150 m,2 frames of 8 storeys and 23 storeys is given an examples.One,two and three-dimensional direct alternative ways are adopted to overcome photographic error.The semiautomatic digital image processing program of computing with mouse action has been edited to be simple.However,multi-discrete dynamics analyses(MBDA) are created.The vary topological multibody system dynamics are richened.The dynamics demolishing building is correct by photogrammetric measurement and can be used.