Model test on fully grouted lattice beam anchorage
CHEN Chunli1，YIN Yueping1，MEN Yuming2，LIU Hainan3
(1. China Institute of Geo-environment Monitoring，Beijing 100081，China；2. College of Geology Engineering and Geomatics，Chang?an University，Xi?an，Shaanxi 710054，China；3. Shaanxi Institute of Geo-environment Monitoring，
Xi?an，Shaanxi 710054，China)
Abstract：Lattice beam anchorage has been applied more and more widely in the landslide prevention，but its mechanism research is lagging far behind the practical application. The large scale physical model tests were carried out to investigate the stress state，failure mode and bearing mechanisms of the lattice beam anchorage. The results show that the fully grouted lattice beam anchorage enhances the stability of the slope. The maximum anchoring force takes place near the sliding surface and descends from the sliding surface to the two ends. The loads to the lattice beam are very small and the foundation pressure distributes as a triangle，with the maximum near the middle and tapering towards both ends. The shear deformation of the anchor arises at the slip surface and the lattice beam bends little. The whole slope slipped. The anchor is the main anti-slide member which plays an anti-shear role and the lattice beam guarantee the overall stability of the slope. The design of the fully grouted lattice beam anchorage should focused on the shear strength of the anchor，and the lattice beam should be the reinforced concrete.
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2017, Vol. 36 
