To the beginner
1. The reinforcement method of changing the structural layout and load transfer way is called ( ).
A. direct reinforcement method
B. changing load transfer reinforcement method
C. jacket structure reinforcement method
D. enlargement section method
Correct answer: B
2. In the following options, () is not a reinforcement method for concrete columns.
A. enlargement section method
B. replacement method
C. prestress method
D. internal clad steel method
Correct answer: C
3. ( ) is the most commonly used wall reinforcement method in engineering.
A. enlargement section method
B. outsourced angle steel method
C. buttress column method
D. Adding rebar net surface layer
Correct answer: C
4. The design value of the tensile strength of the new longitudinal reinforcement should be multiplied by ( ) of the strength utilization coefficient when the loading capacity of the normal section is checked for the condition that the tensile zone is thickened and reinforced.
A. 0.85
B. 0.90
C. 0.95
D. 0.80
Correct answer: B
5. When the number of wall cracks is small and the number of cracking walls is large, it can be used ( ).
A. grouting reinforcement method
B. dismantling prestress plate
C. non prestressed slab
D. prefabricated hollow plate
Correct answer: A
6.The most effective measure to improve flexural rigidity (reduce disturbance) of reinforced concrete flexural members is ().
A. improves the strength grade of concrete
B. increases the section area of the drawn steel bar
C. increases the effective height of the cross section
D. enlarging the width of the section
Correct answer: C
7.The following ( ) is not a variable load.
A.Self weight of structural members
B. house area ash
C. wind load
D. crane load
Correct answer: A
8.The procedures and principles that should be followed in the construction of reinforced concrete structures.
A. clean up the defects of original concrete components to dense parts.
B. chisel the surface of the original component or make it into a trench
C. the concrete edges and corners of the bags should be destroyed and the floating debris and dust should be removed.
D. the original concrete surface should be washed clean. Before pouring concrete, the raw concrete surface should be treated with fresh cement paste or other interface agents.
Correct answer: ABCD
9.The method of strengthening concrete columns by enlarging section method is ().
A. outsourcing
B. one side thickening
C. thickening both sides
D. three surface thickening
Correct answer: ABC
10.If it is a super reinforced beam, the reinforcement method should be adopted.
A. method of increasing cross section
B. method of adopting additional fulcrum
C. reinforcing bar in drawing area
D. configuration stirrup
Correct answer: AB
11.The reinforcement of beams and plates due to insufficient bearing capacity includes two aspects.
A. cross section reinforcement
B. oblique section reinforcement
C. bending failure reinforcement
D. reinforcement and failure of bending
Correct answer: AB
12. Additional reinforcement reinforcement method, which is more suitable for what kind of situation.
A.The section size of the beam can meet the requirement of stiffness
B.The shear bearing capacity of the beam also meets the requirements
C.The flexural tensile strength of the beam can not meet the requirements
D.The amount of reinforcement of the tensile reinforcement of the beam is not very large
Correct answer: ABCD
13.The principle of building structure reinforcement design is.
A .reinforcement of components and reinforcement of structural system
B. local reinforcement and overall reinforcement
C. temporary reinforcement and permanent reinforcement
D. high cost reinforcement and low cost reinforcement
Correct answer: ABC
14.The appearance of concrete beams and plates is insufficient.
A. The deflection of the component is larger
B. The crack is too wide and too long
C. Serious corrosion of steel bar
D. Concrete has signs of crushing in the compressed area
Correct answer: ABCD
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HM-20 est un tissu de fibre de carbone unidirectionnelle. Lorsque mis en place par superposition d’épaisseurs du tissu sur la résine d’imprégnation époxyde HM-180C3P, il forme un système de renforcement composite.
Lamelles en fibres de carbone est une lamelle de composite polymère extrudé par tirage et renforcé de fibres de carbone (CPFC), destiné au renforcement des structures de béton, de bois et de maçonnerie.
Renfort carbone par lamelle précontrainte, ce nouveau procédé permet de traiter des ouvrages, en béton armé ou précontraint, présentant une déformation trop importante ou un manque très important de rigidité.
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