The Solution to the Real Question of Municipal Engineering in the 2020 Second-level Construction Engineer Examination
1. Multiple choice questions (*** 20 questions, each question 1 point, each question has only one option that best suits the meaning of the question. )
1.AC asphalt mixture structure features are ()
A. low cohesion and small internal friction angle.
B. low cohesion and large internal friction angle.
C. high cohesion and small internal friction angle.
D. high cohesion and large internal friction angle.
Answer c
2. The following basic materials, can be used as a high-grade road base is ().
A. lime-fly ash stabilized granular materials
B. lime stabilized soil
C. lime fly ash stabilized soil
D. cement stabilizer
Answer a
3. About the role of slurry seal, the mistake is ()
A.
Sealing water
B. Non-slip
C. Wear resistance
D. Improve the appearance of the road surface
Answer c
4. The main load-bearing structure of arch bridge is ().
A. pull
B. Pressure
C. bending
D. twist
Answer b
5. Among the following influencing factors, it should be considered that () does not belong to the pre-camber of setting support construction.
A. the support bears elastic deformation caused by construction load.
B. Inelastic deformation caused by compression of the supporting rod joint and unloading equipment after loading.
C. linear expansion or compression deformation of the strut at ambient temperature.
D. settlement of supporting foundation after planting
Answer c
6.
In the following riverbed strata, steel sheet pile cofferdam is not suitable for use ()
A. sandy soil
B. Gravel soil
C. Pebble soil with huge gravel
D. Strongly weathered rocks
Answer c
7.
The following measures, can achieve the elimination of hanging basket assembly inelastic deformation is ()
A. Improve the safety factor
B. Reduce the weight of the hanging basket
C. no-load test run
D. load test
Answer d
8. Suitable for cohesive soil, silt, miscellaneous fill, loess, sand and pebbles, but the waterproof curtain construction method with strict requirements on construction accuracy, technology and concrete mixture ratio is ().
A. high-pressure jet grouting method
B. grouting method
C. Cement-soil mixing method
D. Occlusal pile arrangement
Answer d
9. In the foundation pit engineering of weak stratum, the stress transmission path of retaining structure is ().
A. Earth pressure → purlin → retaining pile → support
B. Earth pressure → retaining pile → support → purlin
C. Earth pressure → purlin → support → retaining pile
D. Earth pressure → retaining pile → purlin → support
Answer d
10. The construction procedures for dismantling the vertical shaft horsehead door are: ① burying the hidden beam, ② dismantling the arch, ③ dismantling the side wall, ④ reinforcing the arch layer, and ⑤ dismantling the bottom plate. The correct order is ().
A.①→②→③→④→⑤
B.①→④→②→③→⑤
C.①→④→③→②→⑤
D.①→②→④→③→⑤
Answer b
1 1. Among the following sewage treatment structures, () mainly uses physical action to remove pollutants.
A. Inflatable tank
B. grit chamber
C. oxidation ditch
D. Nitrogen and phosphorus removal tank
Answer b
12. It is suitable for sandy pebble soil layer with high construction precision and fast construction speed. The trenchless construction method for burying water supply pipes with a diameter of 800mm is ().
A. Directional drilling
B. Tamping tube
C. Closed pipe jacking
D. Shallow burying and underground excavation
Answer c
13. Regarding the functional test of water supply and drainage pipelines, the correct statement is ().
A. The functional test of water supply pipeline is divided into closed water test and closed gas test.
B. The hydrostatic test of pressure pipeline shall be determined by infiltration method.
C. The closed water test of pressureless pipeline shall be carried out in the whole section.
D 1/3 interval can be selected for testing when the internal diameter of the pipeline is greater than 700 mm.
Answer d
14. The statement about the requirements of casing installation for gas pipelines crossing structures is correct ().
A the gap between casing and pipeline shall be filled with high-grade cement mortar.
B. waterproof casing shall be installed as soon as possible after structural concrete pouring.
C the casing passing through the structure shall be flush with both ends of the structure.
D the casing passing through the ground shall be 50 mm higher than the ground.
Answer d
15. In the accessories of heating pipe network, the one that can bear three-dimensional displacement and load is ().
A. Spring hanger
B. frame
C. spherical compensator
D. rigid suspenders
Answer a
16. The engineering structure of the landfill area of the garbage sanitary landfill site is from bottom to top, and it is composed of () in turn except for the compacted earthwork protective layer at the grass-roots level.
A. leachate collection and discharge system, geotextile, HDPE membrane and bentonite pad
B. Bentonite mat, HDPE membrane, geotextile and leachate collection and discharge system
C. Geotextiles, HDPE membranes, bentonite mats and leachate collection and discharge systems
D. Leachate collection and discharge system, bentonite pad, HDPE membrane and geotextile.
Answer b
17. The following optical instruments used for deformation observation are ().
A. Total station
B. inclinometer
C. dial indicator
D. axial dynamometer
Answer a
18. The correct order to control the project cost within a reasonable range is ().
A. investment estimation → design budget estimation → construction drawing budget → completion settlement
B. Investment estimation → design budget estimation → construction final accounts → completion settlement.
C. Investment estimation → construction drawing budget → design budget estimate → completion settlement
D. Investment estimation → construction drawing budget → construction final accounts → completion settlement.
19. The speed limit sign on the construction site belongs to ()
A. Warning signs
B. instruction mark
C. Prohibition signs
D. Indicating signs
Answer a
20. The following factors, the biggest influence on the internal temperature of concrete is ().
A. cleanliness of water
B. fineness modulus of sand
C. Gravel grading
D. Cement dosage
Answer d
Second, multiple-choice questions (*** 10 questions, 2 points for each question. Each question has two or more options that match the meaning of the question, at least one of which is wrong. Wrong choice, this question does not score; Choose one less item, and add 0.5 points for each item)
2 1. The pavement structure types suitable for high-grade highways are ()
A. Asphalt mixture pavement
B. Asphalt permeable pavement
C. Asphalt surface treatment pavement
D. cement concrete pavement
E. Block pavement
Answer the advertisement
22. The advantage of geosynthetics is ()
A. Lightweight
B. Good overall continuity
C. High compressive strength
D. Good corrosion resistance
E. Convenient construction
23. When preparing reinforced concrete, when the chloride ion content exceeds 0.06% of the cement dosage, the appropriate measure is ().
A. Adding retarder
B. Add rust inhibitor
C, increasing the thickness of the structural protective layer
D. reduce the strength grade of concrete.
E. Improve the compactness of concrete
24. The technical measures commonly used in underground tunnels are correct ()
A. Lowering the groundwater level
B. Pipe-shed advanced support
C. Set up a temporary inverted arch
D. Grouting around the small duct
E. advance small catheter support
Answer BCDE
26. Before the installation of pipelines and equipment in the heat exchange station, the units involved in the review of the number and position of embedded lifting points are ().
A. structural unit
B. Design unit
C. Supervision unit
D. Civil construction units
E. process installation unit
Answer CDE
27. The pipeline construction survey control points are ().
A. pipeline centerline
B. Trench excavation width
C. elevation of the inner bottom of the pipeline
D. Elevation of pipeline top
E. well location center point
Answer ACE
28. In the following contents, () should respond to the substantive requirements and conditions put forward in the tender documents.
A. complete the project according to the required time limit.
B. Meet the specified quality standards
C. the bidder shall bear the cost of dust pollution.
D. recognize the bidder as a supplier.
E. the bidder promises to use funds for construction.
Answer AB
29. When pouring underwater concrete, the possible reasons for catheter blockage are ().
A. the catheter is leaking
The depth from the bottom of the conduit to the bottom of the hole is too small.
C. the viscosity of mud in the borehole is too high.
D. Poor quality of concrete preparation
E. the retarding time of concrete is very long.
Answer ABD
30. When completed, the building materials that need to be handed over to the construction unit for safekeeping are ()
A. notice of design change
B. Construction log
C. Construction safety inspection records
D. Inspection and acceptance records of concealed works
E. Re-inspection records of engineering survey
Answer ade
Three, case analysis questions (***4 questions, 20 points each)
Case (1)
background information
A unit undertakes the reinforced concrete road project of the main road of an iron and steel plant, with a total length of1.2km. See Figure 1- 1 for the red line distribution. The main rainwater pipe is laid under the sidewalk. The pipeline layout is shown in figure 1-2. The stratum is rich in water and the groundwater level is high. The designer added a 200-meter-thick layer to the road structure layer. After the project department enters the site, the construction site shall be closed according to the requirements of civilized construction, and "five cards and one map" shall be set at the entrance and exit of the site.
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The following events occurred during road construction:
Event 1: subgrade acceptance has been completed in late autumn. In order to complete the cement stabilized macadam base before the arrival of winter, the project department organized scientifically, optimized the scheme, concentrated its efforts, and completed the anti-freezing and covering work of the base while completing the sub-project construction of the base on schedule.
Event 2: After the acceptance by the grass-roots unit, the project department adopts the grooving method to construct the DN300mm rainwater branch pipe, and the trenching section of the rainwater branch pipe is shown in Figure 1-3. After concrete foundation is poured at the bottom of the pool, rainwater branch pipes are laid, C25 concrete is poured on site, and the branch pipes are completely encapsulated.
Event 3: After the rainwater branch pipe construction is completed, it enters the surface construction stage. When the rebar comes into the site, the tester checks the variety and specifications of rebar on duty, which meet the design and current national standards. After the second interview (on-site sampling) passed, the relevant information that the supplier failed to provide was ignored, so the steel bar was put into site construction.
question
1. The 200mm thick graded macadam layer added by the design unit should be set at which level in the road structure? Explain its function.
answer
Test center/site
2. What cards and pictures does the title "Five Certificates and One Picture" specifically refer to?
answer
Test center/site
3. What are the temperature conditions for the event 1 to enter the winter construction? And write down how many days before winter construction comes.
answer
Test center/site
4. Please select the correct section form of rainwater branch pipe excavation in the schematic diagram of water branch pipe trench excavation section in Figure 1-3 (the section form is answered by section (a) or section (b)).
answer
Test center/site
5. What information do you need to check when reinforcing steel bars enter the site in the third activity?
answer
Test center/site
Case (2)
background information
Some roads in a city are cut sections, and both sides are protected by mortar blocks as gravity retaining walls. The retaining wall is about 3.5m higher than the road surface, and its top width is 0. 6m, bottom width 1.5m, and foundation buried depth of 0.85m, as shown in Figure 2- 1.
In summer, it rained continuously for several days, and the retaining wall of about 20 meters on one side of the road suddenly collapsed, so that pedestrians and non-motor vehicles on that side could not pass normally.
The investigation shows that the top load of the retaining wall in this section has no obvious change before the collapse, the foundation has no uneven settlement after the collapse, the masonry mortar of the block stone is fully bonded firmly, the backfill is miscellaneous fill, and the drainage hole is found to be blocked.
In order to restore normal traffic order and ensure traffic safety, the relevant departments decided to rebuild the cast-in-place reinforced concrete gravity retaining soil and fill in the original position, as shown in Figure 2-2.
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The construction unit has formulated the concrete pouring construction scheme of reinforced concrete gravity retaining wall, including: communicating with the commercial concrete factory on concrete strength, volume and delivery time in advance; Immediately after the first car arrives, concrete will be poured: the concrete will be poured in layers, each layer is 600mm, and the upper concrete will be poured before the initial setting of the lower concrete: steel bars will be added at the joint of the old and new retaining walls to make them closely connected; If the transportation time of concrete is too long due to traffic jam, appropriate amount of water can be added to adjust the workability of concrete; Know the weather forecast in advance and take construction measures in rainy season.
The construction unit plans to take the following measures in retaining wall drainage: (1) setting water interception outside the potential landslide area of the slope; The drainage holes of each layer in the retaining wall are aligned up and down; Refers to backfill clay on the back of the earth wall and compact it.
question
1. Analyze the reasons of retaining wall collapse from the stress point of view.
answer
Test center/site
2. Write down the setting position and structural characteristics of reinforcement of concrete gravity retaining wall.
answer
Test center/site
3. Write down the contents that should be checked in addition to the specifications of steel bars before concrete pouring.
answer
Test center/site
4. Correct the mistakes in the concrete pouring scheme.
answer
Test center/site
5. Correct the mistakes in the drainage design of retaining wall.
answer
Test center/site
Case (3)
background information
A company has built a city bridge, and the superstructure is 20m prestressed concrete simply supported plate beam. The substructure adopts gravity U-shaped abutment, and the foundation is enlarged by open excavation. According to the geological investigation report, the abutment geology consists of miscellaneous fill, silty clay, viscous, strongly weathered rock, moderately weathered rock and slightly weathered rock from top to bottom. The elevation of abutment is shown in Figure 3.
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The following events occurred during the construction:
Event 1: Before the commencement of construction, the project department will divide the project into units, divisions, sub-projects and inspection lots together with relevant units, prepare a list of concealed works as the basis for project quality inspection and acceptance, and determine the excavation category of abutment foundation pit of this project division.
Before the abutment foundation pit excavation, the project department shall prepare a special construction plan and submit it to the supervision engineer for review.
Event 2: According to the requirements of design drawings, after the abutment foundation pit excavation is completed, the project department applies to the supervision company for groove inspection on the basis of self-inspection, and it is qualified according to Table 3.
question
1. Write the names of structures A and B in Figure 3. (2) Briefly describe the role of abutment in bridge structure.
answer
Test center/site
2. In the first incident, which units participated in the project division "together with relevant units"?
answer
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3. In the first incident, what kinds of abutment foundation pit excavation belong to in the project division?
answer
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4. Write what C and D represent in Table 3.
answer
Test center/site
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