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Method for applying prestress to steel reinforced concrete composite beam structure and calculating prestress value
The invention belongs to the field of constructional engineering, and relates to a method for applying prestress to a steel reinforced concrete composite beam structure and calculating a prestress value. According to the method, load or forced displacement is applied to a section steel beam to enable the section steel beam to deform, concrete is poured on the deformed section steel beam to construct the steel reinforced concrete composite beam, and after the poured concrete meets the strength requirement, the load or forced displacement applied to the section steel beam is removed to enable the steel reinforced concrete composite beam to rebound. And the application of the concrete prestress is completed. According to the method for applying the prestress, the magnitude of the prestress applied to the poured concrete is calculated according to the relation between the beam structure deflection and the cross-sectional moment of inertia. Prestress is applied to the concrete of the steel reinforced concrete composite beam through the deformation of the profile steel beam, so that the section utilization rate of the steel reinforced concrete composite beam is increased, and the crack resistance, rigidity, bearing capacity and durability of the steel reinforced concrete composite beam are improved.
本发明属于建筑工程领域，涉及一种型钢混凝土组合梁结构施加预应力及预应力值计算的方法。该方法通过对型钢梁施加荷载或强制位移，使型钢梁产生形变，在发生形变的型钢梁上浇筑混凝土以构造型钢混凝土组合梁，待浇筑混凝土达到强度要求后，去除对型钢梁施加的荷载或强制位移，使型钢混凝土组合梁回弹，完成对混凝土预应力的施加。所述施加预应力的方法对浇筑混凝土施加预应力的大小，根据梁结构挠度与截面惯性矩关系进行计算。本发明通过型钢梁自身的形变对型钢混凝土组合梁的混凝土施加预应力，使型钢混凝土组合梁的截面利用率增大，提高型钢混凝土组合梁的抗裂性能、刚度、承载力和耐久性。
Method for applying prestress to steel reinforced concrete composite beam structure and calculating prestress value
The invention belongs to the field of constructional engineering, and relates to a method for applying prestress to a steel reinforced concrete composite beam structure and calculating a prestress value. According to the method, load or forced displacement is applied to a section steel beam to enable the section steel beam to deform, concrete is poured on the deformed section steel beam to construct the steel reinforced concrete composite beam, and after the poured concrete meets the strength requirement, the load or forced displacement applied to the section steel beam is removed to enable the steel reinforced concrete composite beam to rebound. And the application of the concrete prestress is completed. According to the method for applying the prestress, the magnitude of the prestress applied to the poured concrete is calculated according to the relation between the beam structure deflection and the cross-sectional moment of inertia. Prestress is applied to the concrete of the steel reinforced concrete composite beam through the deformation of the profile steel beam, so that the section utilization rate of the steel reinforced concrete composite beam is increased, and the crack resistance, rigidity, bearing capacity and durability of the steel reinforced concrete composite beam are improved.
本发明属于建筑工程领域，涉及一种型钢混凝土组合梁结构施加预应力及预应力值计算的方法。该方法通过对型钢梁施加荷载或强制位移，使型钢梁产生形变，在发生形变的型钢梁上浇筑混凝土以构造型钢混凝土组合梁，待浇筑混凝土达到强度要求后，去除对型钢梁施加的荷载或强制位移，使型钢混凝土组合梁回弹，完成对混凝土预应力的施加。所述施加预应力的方法对浇筑混凝土施加预应力的大小，根据梁结构挠度与截面惯性矩关系进行计算。本发明通过型钢梁自身的形变对型钢混凝土组合梁的混凝土施加预应力，使型钢混凝土组合梁的截面利用率增大，提高型钢混凝土组合梁的抗裂性能、刚度、承载力和耐久性。
Method for applying prestress to steel reinforced concrete composite beam structure and calculating prestress value
型钢混凝土组合梁结构施加预应力及预应力值计算的方法
ZHAO WEIJIAN (author) / JIANG TIANREN (author)
2023-12-05
Patent
Electronic Resource
Chinese
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