Method for reinforcing construction structure by fiber knitted net and fine concrete
A technology of fiber woven mesh and fine concrete, which is applied in the direction of building construction, chemical instruments and methods, construction, etc., can solve problems affecting the reinforcement effect, achieve the effects of preventing interface peeling damage, reliable reinforcement, and improving crack forms
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[0029] The present invention will be further described below in conjunction with embodiment. The scope of the present invention is not limited to this embodiment.
[0030] Using the method of the present invention to strengthen the floor panel of a building, the calculated span of the original structure is 1200mm, the section size is width b=300mm, thickness h=60mm; the environmental category is Class I, the concrete strength grade is C30, and the compressive design strength is f c =14.3N / mm 2 , the original structure is configured with 3 HPB235 grade main reinforcements with a diameter of 8mm, and the tensile design strength is f y =210N / mm 2 , the thickness of the protective layer of the stressed main reinforcement is 15mm, and the design value of the bending moment of the mid-span section is 1.0KN m. Since the floor panel needs to temporarily bear the force exceeding the design load, under the new load, the maximum bending moment of the mid-span should reach 3KN·m, the s...
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