三支座30 m宽幅式空心板梁受力性能试验研究

就某特大桥三支座30m跨空心板梁的偏心扭矩，大支座梁端横向抗弯，跨中静载破坏，距梁端2m处顶板局部承压静载破坏等项目进行试验，研究三支座空心板梁的受力特点，工作性能，验证三支座方案设计的可行性，通过试验研究表明四支座改为三支座后30m空心板梁能改善其受力性能，工作性能和承载能力完全达到设计要求，在工程实践上具有重要意义。

Test of the mechanical property study of the hollow plate-beam with the span of 30 m of the special big bridge

In this paper,according to the three abutments hollow plate beam with the span of 30 m of the special big bridge,test for eccentric torsion moment,bendind of large abutment beam,destroy of static load at the middle of span and destroy of local static load of bearing pressure away 2m from the edge of the beam etc.are made,in order to study the mechanical property,working property of the three abutments.It shows that the mechanical property and working property of hollow plate beam are more perfect after its four abutments were turned into three abutments and bearing capacity meet thoroughly the requirement of design and it is important meanings for the practical engineering.