【摘要】 针对玻璃幕墙在风荷载作用下变形量测方法不能解决全场、复杂节点变形的问题,提出一种基于三维数字照相变形量测技术的光学方法。通过使用双摄像机的三维数字照相量测技术,测定玻璃幕墙在不同风荷载作用下的应变和挠度,然后通过与传统方法应变片和百分表测量以及有限元数值模拟所得的数据进行比较,来验证三维数字量测方法在玻璃幕墙变形量测的可行性。试验结果表明:在相同的风荷载作用下,通过3种方法所测得的应变-位置和挠度-位置的比较,说明三维数字照相量测试验测量得到的玻璃幕墙表面变形数据是准确的,数字照相量测方法可以应用于玻璃幕墙表面变形量测。更多还原

【Abstract】 In order to solve the problem that the deformation measurement method of glass curtain wall under wind load can’t solve the deformation of whole site and complex nodes, an optical method based on threedimensional digital photographic deformation measurement technology is proposed to measure the deformation of glass curtain wall under the action of wind. Through the use of two-camera three-dimensional digital camera measurement technology, the strain and deflection of the glass curtain wall under different wind loads are measured, and then compared with the data obtained by traditional methods of strain gauge and dial indicator measurement and finite element numerical simulation. The feasibility of three-dimensional digital measurement methods in the deformation measurement of glass curtain wall is Verified. The test results show that under the same wind load, the comparison of the strain-position and deflection-position measured by the three methods shows that the three-dimensional digital camera test is accurate in measuring the surface deformation of the glass curtain wall. Photogrammetry methods can be applied to the surface deformation measurement of glass curtain walls.更多还原