crippled leap frog test

Based on the exhaustive research on three types of primitive bridges: natural bridge,stone bridge and float bridge in Hunan,a study on the distinguishing features,originating reasons and the redistribution factors of the bridges were given.

通过对湖南省现存天生桥、踏步桥、浮桥三种原始桥梁的研究,分析了湖南原始桥型的特点、形成原因以及影响其分布的因素,旨在体现湖南的地形和地域文化特点。

Based on a practical project,the author introduces a ground treatment method of step cushion replacement with different intensity substance to control differential sedimentation.

通过工程实例,介绍了采用踏步换土垫层法并结合不同强度的填料用来调整控制地基不均匀沉降量处理地基的方法。

The applicable calculation of steel in the steel reinforced concrete bridge-stair steps;

钢筋混凝土梁式楼梯踏步板截面配筋的实用计算

Reinforcement protection technology for external angle of stair step;

楼梯踏步阳角采用钢筋护角新工艺