Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large-space-span post-tensioned prestressed beam construction method
The invention relates to the technical field of building construction, and provides a large-space-span post-tensioned prestressed beam construction method. The large-space-span post-tensioned prestressed beam construction method comprises the following step that blanking is achieved: blanking prestressed tendons in a beam is achieved in a blanking field special for the prestressed tendons, and when the prestressed tendons are blanked and the project amount is calculated, according to the regulation of the project consumption amount; corrugated pipes are arranged in the beam in a penetrating mode, prestress construction is conducted alternately after a prestress beam bottom die and beam steel bars are completed, and when a large-span prestress beam formwork is manufactured, if arching needs to be conducted in advance, a reserved hole channel is suitable for arching along with a component at the same time. According to the prestressed concrete beam of the construction method, the crack and deformation performance of the structural component can be improved; the tensile stress and the pressure stress in concrete just form a self-balancing system, so that the stress of a concrete structure is more reasonable and measured by the actual use, the tensile strength of a prestressed tendon is about four times of that of a common steel bar, but the price of the prestressed tendon is not four times of that of the common steel bar, and prestressed steel is more economical according to the cost of bearing unit load.
本发明涉及建筑施工技术领域，本发明提供了一种大空间跨度后张法预应力梁施工方法，包括以下步骤：下料、梁内预应力筋的下料在预应力筋专用下料场进行，预应力筋下料和计算工程量时，按工程消耗量定额的规定，梁中穿设波纹管、预应力施工在预应力梁底模及梁钢筋完成后穿插进行，大跨预应力梁模板制作时如需要预先起拱，预留孔道宜随构件同时起拱，本施工方法的预应力混凝土梁能够改善结构构件的裂缝和变形的性能，而且该拉应力与混凝土中的压应力正好组成一个自平衡系统，使得混凝土结构的受力更为合理，并由实际使用测得，预应力筋的抗拉强度约为普通钢筋的四倍，但其价格并非是普通钢筋的四倍，按承受单位荷载的费用计算，预应力钢材要更经济。
Large-space-span post-tensioned prestressed beam construction method
The invention relates to the technical field of building construction, and provides a large-space-span post-tensioned prestressed beam construction method. The large-space-span post-tensioned prestressed beam construction method comprises the following step that blanking is achieved: blanking prestressed tendons in a beam is achieved in a blanking field special for the prestressed tendons, and when the prestressed tendons are blanked and the project amount is calculated, according to the regulation of the project consumption amount; corrugated pipes are arranged in the beam in a penetrating mode, prestress construction is conducted alternately after a prestress beam bottom die and beam steel bars are completed, and when a large-span prestress beam formwork is manufactured, if arching needs to be conducted in advance, a reserved hole channel is suitable for arching along with a component at the same time. According to the prestressed concrete beam of the construction method, the crack and deformation performance of the structural component can be improved; the tensile stress and the pressure stress in concrete just form a self-balancing system, so that the stress of a concrete structure is more reasonable and measured by the actual use, the tensile strength of a prestressed tendon is about four times of that of a common steel bar, but the price of the prestressed tendon is not four times of that of the common steel bar, and prestressed steel is more economical according to the cost of bearing unit load.
本发明涉及建筑施工技术领域，本发明提供了一种大空间跨度后张法预应力梁施工方法，包括以下步骤：下料、梁内预应力筋的下料在预应力筋专用下料场进行，预应力筋下料和计算工程量时，按工程消耗量定额的规定，梁中穿设波纹管、预应力施工在预应力梁底模及梁钢筋完成后穿插进行，大跨预应力梁模板制作时如需要预先起拱，预留孔道宜随构件同时起拱，本施工方法的预应力混凝土梁能够改善结构构件的裂缝和变形的性能，而且该拉应力与混凝土中的压应力正好组成一个自平衡系统，使得混凝土结构的受力更为合理，并由实际使用测得，预应力筋的抗拉强度约为普通钢筋的四倍，但其价格并非是普通钢筋的四倍，按承受单位荷载的费用计算，预应力钢材要更经济。
Large-space-span post-tensioned prestressed beam construction method
一种大空间跨度后张法预应力梁施工方法
WANG BAODONG (Autor:in) / LIU YI (Autor:in) / WANG LIBIN (Autor:in) / JI JIANCHENG (Autor:in) / CAO JUNHUA (Autor:in) / LIU KANG (Autor:in) / ZHAO HONGJIN (Autor:in) / ZHAN HUA (Autor:in) / LI LIN (Autor:in)
05.11.2021
Patent
Elektronische Ressource
Chinesisch
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