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辽宁大厦餐厅工程的18米多腹杆预应力拱形桁架系采用钢筋涂沥青,浇灌在混凝土构件中,混凝土达到强度后,进行电热法张拉施工。桁架混凝土标号300号,下弦预应力钢筋共二根,采用25锰硅低合金钢筋直径为22。张拉控制应力采用4765公斤/厘米~2。桁架间距为6米,屋盖采用预应力钢筋混凝土大型屋面板,泡沫混凝土保温,卷材防水。其屋面荷载为370公斤/米~2。
The 18-meter multi-span web prestressed arch truss of Liaoning Mansion Restaurant Project is made of asphalt coated with concrete and poured into concrete components. After the concrete reaches strength, it is subjected to electro-thermal tension construction. The number of truss concrete No. 300 and the total number of prestressed steel bars under the string are 2 and the diameter of the 25-manganese silicon low-alloy rebar is 22. Tensile stress control uses 4765 kg/cm2. The truss spacing is 6 meters. The roof is made of pre-stressed reinforced concrete large roof panels, foam concrete insulation, and coiled material is waterproof. Its roof load is 370 kg/m2.