预应力钢板环箍加固设计和施工

Designing and Construction of Prestressed Steel Hoop Reinforcement

利用钢材的热胀冷缩原理,通过箍板降温回缩对加固柱混凝土产生预压应力,使核芯混凝土处于三向受压状态,从而有效提高混凝土强度和变形能力。用形状改变比能理论对混凝土三向受压进行受力分析,对预应力加固缀板进行详细设计,并进行施工、检测并从中得到的经验。

Steels expand with heat and contract with cold.So hoops at low temperature contract and give stress to the column concrete.The core concrete is in a state of three dimension stress,thus effectively increases the concrete strength and deformability.By using the principle of energy of form-changed criterion,this paper analyzes the concrete stressed from three dimensions,designs,constructs and tests prestressed reinforced batten plates and get experience from thus.