BW rubber expander glue bond substitutes for steppedjoint or tongued and grooved joint in the horizontal joint site on the outside wall of basement.
在地下室外墙施工中 ，铺设BW温水膨胀橡胶止水条 ，取代了水平接缝处留阶梯缝或凸凹缝的作法 ；
2
From a yield line model used for calculating RHS-joint strength, a stiffness model is developed for a stepped T-type RHS joint, and a stiffness formulas is established.
The influence of geometric parameters on stepped T-type RHS joint was studied by using finite element method considering material and geometrically nonlinear effect.