The answers to the real questions of 2022 first-class constructor highway engineering The following are some real questions and answers of 2022 first-class constructor highway engineering examination for your reference:
1. The statement about quality control during embankment filling construction is correct ()
A. In the construction process, measure the degree of compaction after filling three layers.
B the frequency of compaction degree detection shall be determined by the site supervision engineer.
C sand filling method can only be used to detect the compactness of embankment.
D. During construction, the center line and width of subgrade shall be detected every 2m.
Answer d
Analysis option A, during construction, each compacted layer shall be tested for compactness. Option c, the compaction degree can be detected by sand filling method, ring knife method, etc. Scheme D: During construction, the centerline and width of the route shall be detected every 2m. Option b, the detection frequency is not less than 2 points per 1000m2.
2. The following description of common blasting methods for subgrade conforms to the characteristics of smooth blasting ().
A. Under the condition of no lateral free surface and minimum resistance line, the quasi-explosive body is separated from the mountain by blasting with controlled charge as vibration isolation and shock absorption belt.
B, two adjacent explosive charges in the front row and the back row or explosive charges are detonated in turn at a time interval of several milliseconds.
C, in the case of lateral free surface, blasting is carried out by controlling the resistance line and the charge.
D, using the explosion energy, move a large number of earthwork to a certain position in the specified direction, and pile up into a smooth embankment.
Answer c
Analysis scheme A is presplitting blasting, scheme B is millisecond blasting, and scheme D is directional blasting.
3. The statement about building tunnels in rockburst areas is correct ().
Smooth blasting technology should be adopted in the tunnel to strictly control the charge.
B in general, the footage per cycle should be controlled at 2.0 ~ 2.5m
C the rockburst prevention anchor can be anchored in time, and the anchoring length should not be greater than1.5m.
D after excavation, the hole sealing by shotcreting shall be delayed.
Answer a
Analysis a is correct. Smooth blasting technology should be adopted to make the tunnel periphery smooth and reduce stress concentration; The charge should be strictly controlled to reduce the disturbance to surrounding rock.
B error. The circulating footage should be controlled at short footage. In general, the footage per cycle should be controlled at 1.0~ 1.5m, and the maximum footage should not be greater than 2m.
C error. The rockburst-proof anchor can adopt formwork, slotted pipe, water swelling, etc. to adjust the stress distribution of surrounding rock and reinforce it. The length of anchor rod should be about 2m, and the spacing should be 0.5 ~1.0m. ..
D error. After excavation, fiber reinforced concrete should be sprayed in time for sealing, with a thickness of 5 ~ 8 cm.
4. Description of steel pipes used in highway power distribution engineering and their quantities. The correct one is ().
A. Thin-walled steel pipes should be used in wet places.
B. The outer wall of the steel pipe should be treated with anti-corrosion, but the inner wall need not be treated with anti-corrosion.
C the connection of galvanized steel pipes shall be checked by threaded connection or casing fastening screws.
D the distance between the nozzle of the steel pipe extending into the junction box and the ground shall be 233, and not more than1000 mm.
Answer c
Steel pipe laying shall meet the following requirements:
(1) Thick-walled steel pipes should be used in wet places and buried directly underground, and thin-walled steel pipes should be used in dry places. A mistake.
(2) The inner and outer walls of steel pipes should be treated with anti-corrosion. There should be no flattening and cracks in the steel pipe, no iron filings and burrs in the pipe, the cut-off opening should be straight and the nozzle should be smooth. B error.
(3) The galvanized steel pipe and thin-walled steel pipe shall be connected by threaded connection or sleeve fastening bolts. C is correct.
(4) The connection between exposed steel pipe or concealed galvanized steel pipe and box (box) shall be fixed with lock nut or protective cap. When connected with the equipment, it should be laid in the junction box of the equipment, and the distance between the nozzle and the ground should be greater than 200 mm. D error.
(5) The jumper grounding wire of galvanized steel pipe should adopt special grounding wire.
5. In highway engineering, "S" curve and () are often combined in the same icon, which is called highway engineering schedule.
A. cross chart
B. vertical diagram
C. slope diagram
D. network diagram
Answer a
analyse
In highway engineering, "S" curve and crossing chart are often combined in the same chart, which is called "highway engineering progress plan", which can reflect the progress of each division (item) and the overall progress of the project.
6. At present, the design of asphalt concrete in China adopts ().
A. Mix proportion design method of rotary compaction test
B. Maximum density test
C. Marshall test mix design method
D. Maximum strength test
Answer c
Marshall test mix design method is adopted in asphalt concrete mix design analysis. Firstly, the asphalt mixture is mixed according to the mixture ratio design, and then the specimen with specified size is made. 12h later, its physical indexes (including apparent density, porosity, asphalt saturation, porosity of mineral aggregate, etc. ), and then determine the stability and flow values.
7. According to the Standard for Quality Inspection and Evaluation of Highway Engineering (Volume 1), the smallest engineering unit for quality evaluation of highway engineering is ().
A. Construction process
B. sectional works
C. divisional projects
D. Unit project
Answer b
Analyze the relationship between the size of the same project (from large to small): single project, unit project, division project and sub-project
According to JTG F80, 1-20 17, the sectional works shall be evaluated according to the evaluation standard after completion. Concealed works should be inspected before concealment. A project, sub-project and sub-project
According to the Standard for Quality Inspection and Evaluation of Highway Engineering-Volume I Civil Engineering JTGF80/ 1-20 17, after the completion of the sectional works, they should be evaluated according to the evaluation standard. Concealed works should be inspected before concealment. After the completion of subdivisional work and unit project, the quality data of subdivisional work and subdivisional work should be summarized and evaluated, and the appearance quality should be checked to evaluate the project.
8. The core of the implementation and control of the occupational health and safety management system of highway engineering projects is ().
A. One post and two responsibilities
B. Three Necessary Principles
C. "Five simultaneities" in safety management
D. Responsibility system for production safety
Answer d
This paper analyzes how to establish and improve the rules and regulations of safety production in units with the responsibility system for safety production as the core, and implement the "three principles" of "one post with two responsibilities, the party and government with the same responsibility, and accountability for dereliction of duty" and "safety must manage the industry, business, production and operation". It is embodied in the planning, arrangement, inspection, summary and appraisal of production work and the planning, arrangement, inspection, summary and appraisal of safety production work, that is, the five simultaneities of safety management.
9. The bridge height referred to as bridge height, refers to ().
A. height difference between bridge deck and low water level
B. Height difference between deck and ground 3
C. Height difference between bridge deck and design water level
D. the height difference between the bridge deck and the line pavement under the bridge.
E. the distance between the bridge deck and the lowest edge of the bridge span structure.
Answer A.B
Analytic bridge height, abbreviated as bridge height, refers to the height difference between bridge deck and low water level (or ground), or the distance between bridge deck and pavement under the bridge. The height of bridge reflects the difficulty of bridge construction to some extent.
10. In tunnel engineering, the classification of surrounding rock is the main basis for determining ().
A. design speed
B. Selection of construction methods
C. Highway grade
D. Labor quota for tunnel construction
E. Type and size of lining structure
Answer BDE
Classification analysis of tunnel surrounding rock is the basis of design and construction. The selection of construction method, the determination of lining structure type and size, the formulation of tunnel construction labor quota and material consumption standard should be based on surrounding rock classification.
1 1. Highway sections with high risk of loss of control of freight vehicles need to be provided with escape lanes, mainly including ().
A. Widening the driveway
B. approach road
C. Brake bed
D. rescue lane
E. emergency lane
Answer BCD
In the road section with high risk of loss of control of freight vehicles, escape lanes should be set up, which are composed of approach roads, brake beds and rescue lanes.
12. Regarding the contents of the highway bill of quantities, there are () a. There are no subheads in the agreed measurement rules, and the quantities are calculated according to the theoretical net amount marked on the drawings with contract binding force.
B. Actual construction quantity when the engineering quantity listed in the bill of quantities.
C the number of items listed in the bill of quantities is the same as the tender offer. It is also the final settlement basis.
The bill of quantities should be understood or explained in combination with the measurement and payment terms.
E. The unit price or price of each subtitle in the bill of quantities must be filled in, and only one quotation is allowed.
Answer ade
Analysis option A, for the subheadings not specified in the measurement rules, the engineering quantity shall be calculated according to the theoretical net engineering quantity marked on the drawings with contract binding force. The measurement adopts the legal unit of measurement in People's Republic of China (PRC). Options B and C, the quantities listed in this Bill of Quantities are estimated or designed, and only serve as the same basis for * * * bidding quotation, and cannot be used as the basis for final settlement and payment. Option D, the scope and measurement of sub-items in each chapter of the bill of quantities shall be understood or explained in combination with the scope, measurement and payment terms in the corresponding chapter of the technical specification of the bill of quantities measurement rules. Option e, the unit price or price of each sub-item in the bill of quantities must be filled in, and only one quotation is allowed.
13. The safety risk assessment of bridge construction should be carried out for the following projects: (a) Reinforced concrete arch bridge with span greater than 150m.
B. A beam bridge with a span of 200 meters
C. Bridge works with pier height of 200m
D. Cable-stayed bridge with a span of 250 meters
E. suspension bridge with a span of 500 meters
Answer ABC
Bridge engineering analysis;
(1) Stone arch bridges with multiple spans or spans greater than 40m, reinforced concrete arch bridges with spans greater than or equal to 150m, steel box arch bridges with spans greater than or equal to 350m, steel trusses and concrete filled steel tubular arch bridges.
(2) Beam bridges with spans greater than or equal to 140m, cable-stayed bridges with spans greater than 400m, and suspension bridges with spans greater than 1000m.
(3) Bridge works with pier height or clearance greater than100m.
(4) Extra large bridges and bridge projects with new materials, new structures, new technologies and new technologies.
(5) Demolition or reinforcement project of special bridge type or bridge with special structure.
(6) Other bridge projects with complex construction environment and complex construction technology.
14. When preparing the target budget after the highway project, the special expenses that should be included are ().
A. Site leveling and hardening costs
B. Maintenance cost of temporary service road
C. directing the use of vehicles
D. Cost of building safety risk assessment
E. Construction cost of site laboratory
Answer ABDE
The special cost analysis includes the construction cost of the construction site and the safety production cost.
1. site construction fee. According to the requirements of standardization of on-site construction, the contractor's residence, on-site laboratory construction, office, living and housing, production housing and other expenses: site leveling, site hardening, drainage, greening, signs, sewage treatment facilities, fence isolation facilities and other expenses, as well as the construction or lease, maintenance and repair of various temporary working sidewalks, pedestrian sidewalks, water pipe branches, electric wire branches and temporary structures for temporary water and electricity use on site. Depreciation, maintenance or lease expenses of test equipment and instruments belonging to fixed assets, construction dust pollution prevention measures, civilized construction and healthy living expenses of employees in the field laboratory, but excluding direct access roads, temporary access roads in and out of the red line and defecation roads. When preparing the post-bid budget, it should be estimated according to the actual situation that the project may encounter, combined with the relevant contents in the implementation construction organization design, or calculated with reference to the relevant cost quota of the enterprise.
2. Safety production costs. Including the cost of improvement, modification and maintenance of safety facilities and equipment, the cost of equipping and maintaining emergency rescue equipment, the cost of carrying out assessment and rectification of major hazard sources and hidden dangers of accidents, the cost of inspection, evaluation and consultation on safety production, the cost of equipping and updating safety protection articles for field workers, the cost of publicity, education and training on safety production, the cost of inspection and testing of safety facilities and special equipment, the cost of construction safety risk assessment, emergency drills and other work directly related to safety production.
15. When highway engineering is rebuilt, the technical treatment measure for connecting the old and new subgrade is ().
A. turn over the old earth shoulder.
B, with ash to crush the old soil shoulder.
C. When the low-grade highway is rebuilt, the new and old subgrade can be treated without digging steps.
D. Improve the subgrade excavation step scheme to eliminate the insufficient compaction degree of the old subgrade slope.
E. adopt reasonable technology to reduce the uneven settlement at the junction of new and old subgrade.
Answer ABDE
analyse
Technical treatment measures for connection between new and old subgrade;
(1) Remove the sod, tree roots, humus and other sundries on the old shoulder slope.
(2) Turn over the old soil shoulder or mix it with ash to re-roll it to meet the quality requirements.
(3) Build a test road, improve the scheme of subgrade excavation steps, dig steps from hard shoulders instead of soil shoulders, so as to eliminate the insufficient compaction of old subgrade slopes, strengthen the combination of new and old subgrade, and reduce the uneven settlement at the junction of new and old subgrade.
16. Among the following pavement granular base, the embedded type is ().
A. Mud bound macadam base
B. Graded macadam base
C. marl and macadam base
D. gap-filling macadam base
E. graded gravel base
Answer ACD
analyse
-Classification and application scope of granular materials:
1. granularity classification
(1) Interlocking Type I includes mud bound macadam, marl bound macadam and interstitial macadam. ACD is correct.
(2) Grading includes graded gravels, graded gravels, graded natural gravels, graded gravels and gravels formed by rolling some gravels. Wrong.
17. The requirement for leveling point measurement and encryption is correct ().
A. the accuracy of leveling points shall conform to the specifications.
B The same building project should adopt the same height system and connect with the height system of adjacent projects.
C. Temporary leveling points shall meet the accuracy requirements of corresponding grades and be closed with adjacent leveling points.
D provide leveling points for design, which can only be reinforced and used permanently before construction.
E. The leveling points shall be checked irregularly and re-measured regularly, and the re-measurement period shall be no less than 9 months.
Answer ABC
analyse
Provisions on leveling point retest and encryption:
(1) The benchmark accuracy shall comply with the provisions of the specification. Correct.
(2) The same building project should adopt the same height system, and should be connected with the height system of adjacent projects. B correct.
(3) Set a leveling point every 500m along the line, and set a leveling point every 200m for expressway and first-class highway encryption. Leveling points should be added near structures, high filling and deep excavation areas, areas with concentrated engineering quantities and complex terrain. Temporary leveling points shall meet the accuracy requirements of corresponding grades and be closed with adjacent leveling points. C is correct.
(4) Before construction, the leveling points that may be affected by construction shall be reinforced or moved, and their accuracy shall be maintained. D error.
(5) The leveling points shall be checked irregularly and retested regularly, and the retest period shall not exceed 6 months. E error.
18. From the functional classification, the transverse joints of cement concrete pavement can be divided into ().
A. transverse reflection seam
B. Transverse construction joints
C. Transverse settlement joint
D. transverse contraction joint
E. transverse expansion joint
Answer BDE
analyse
Transverse joints are divided into transverse construction joints, transverse contraction joints and transverse expansion joints according to their functions. Transverse construction joints are structurally divided into flat joints with dowel bars and tongue-and-groove joints with tie bars; Transverse contraction joint can be divided into dowel bar and non-dowel bar.
Note: The above are only some true questions and answers, and the rest are constantly updated. ...