Official account: Construction engineer Shi Liangyu's answer to the previous issue: 1: A 2: C 3: C 4: ABCD 5: BCD1. [Single choice question] When designing cast-in-place concrete box beam brackets, the loads that should be used to calculate the strength and verify the stiffness a

official account: Construction engineer Shi Liangyu

Previous issue answers: 1: A 2: C 3: C 4: ABCD 5: BCD

1. [Single choice question] When designing a cast-in-place concrete box beam bracket, the load used to calculate strength and verify stiffness is ().

A, the self-weight of concrete box beams

B, the load of construction materials and equipment

C, the load of concrete

D, the horizontal impact load of concrete

2, [Single choice question] Where river seepage is very small, the flow rate is ≤3.0m/s, and the stones can be used for local materials, ( ) cofferdams should be used.

A, soil

B, soil bag

C, lead wire cage

D, rock pile soil

3, [Single choice question] prestressed tensioning equipment should be verified, and its verification period shall not exceed ( ) and shall not exceed ( ) tensile operations.

A, 100

B, 150

C, 200

D, 400

4, [Multiple choice question] The track structure is a structure composed of ( ) and so on.

A, rail

B, turntable

C, track bed

D, sleeper

E, power supply circuit

5, [Multiple choice question] When designing prestressed concrete structure formwork, prestressing should be considered after ( ), etc.

A, upper arch of component

B, support bolt displacement

C, non- elastic deformation of component

D, embedded part displacement

E, elastic compression of component

answer comment area and see you next time~