Who has a construction plan for urban highway guardrails? Urgently

1.The foundation is poured on site, the foundation pit is excavated manually, the rock part that cannot be excavated manually is supplemented by weak blasting with a wind pick or a wind gun to hit a shallow hole, the upper soil pit wall is excavated, and the lower rock pit wall is vertical. The slope of the excavation slope of the foundation pit depends on the ground, and the size of the foundation pit should meet the wheel gallery of the foundation pit.

Before installing the concrete foundation, check the size of the foundation pit, the plane position and the flatness and compactness of the ground in time, and then carry out the foundation construction.

2.Base inspection.

Before pouring the foundation concrete, the foundation pit is inspected for the first time, and the contents of the inspection are: The location of the base plane and whether the elevation meets the requirements of the specification. Whether the soil quality of the base is consistent with the specification, and whether the bearing capacity meets the requirements of the specification.

Whether there is stagnant water, debris, loose soil, whether it is clean and smooth.

Base low treatment: when the base is low for dry soil, it should be wet, the process soil should be rammed under the base low design elevation to fill a layer of gravel layer, when the base low surface is rock, it is wetted, a layer of cement mortar is paved, and the foundation concrete construction is carried out before the mortar is condensed.

3.Foundation concrete pouring.

After the foundation is excavated in place, it shall not be exposed for a long time, and the concrete foundation should be poured as soon as possible, and its position, stability and elevation should be ensured when the foundation is poured: the column concrete foundation size is 400mm*300mm.

Precautions. The column shall not have obvious torsion, shall not be welded and lengthened, the end burr must be removed, and the column lofting shall be based on the control point on the highway, and the column spacing shall be appropriately adjusted according to the measurement distance; The installation of the column should be consistent with the design drawings and coordinate with the road alignment, the column must be firmly buried in the soil, and the depth of the burial must reach the depth specified in the design, and perpendicular to the ground plane. (2) Regardless of the method used to install the guardrail, the contractor shall try to avoid damaging the pipeline facilities buried under the road surface, and the contractor shall be responsible for repairing the damage if it causes damage, and the repair cost after damage shall be borne by the contractor.

3) After the guardrail is installed, the horizontal direction and the vertical direction should form a smooth line shape. It should be well guided by the landscape and the driver's line of sight.

The corrugated beam guardrail installed on the side of the road should not cause the guardrail surface to intrude within the construction boundary of the highway. Corrugated beams and plates should generally be formed by continuous rolling. The bolt holes on the corrugated beam must be positioned accurately.

All splicing bolts and splices at each end should not be tightened too early. During the period from the completion of the column installation to the installation of the column cap, debris should be prevented from falling into the column. The connecting bolts and splicing of the corrugated beam should not be tightened too early.

Before tightening the connecting bolts, the bracket (anti-blocking block) should be adjusted to be in place accurately.

The importance of installing highway guardrails: The installation of highway guardrails has actually achieved the reduction of traffic accidents and the safety of residents' travel in most of them!

You have to explain what kind of guardrail is installed, and different guardrail installation methods are different.

The following points need to be paid attention to when bidding for road guardrail projects:

2.Determine materials and equipment: select appropriate materials and equipment according to the project requirements, and determine its ** and ** channels. At the same time, it is also necessary to consider factors such as transportation costs, installation costs, etc.

3.Formulate a construction plan: Formulate a detailed construction plan, including personnel organization, schedule, quality control, etc. Programmes need to be prepared taking into account the realities of the situation and maximizing efficiency.

4.Calculate the cost: Calculate the total cost based on the selected materials and equipment and the construction plan developed, and take into account the market. At the same time, it is necessary to set aside some profit margins to deal with unforeseen risks.

5.Submission of bidding documents: Submit complete and compliant bidding documents in accordance with the format specified in the bidding documents, and complete all required information before the deadline.

Legal analysis: 1. The setting of traffic guardrails should meet the needs of road traffic organizations.

2. The setting of motor vehicle isolation fences and machine non-isolation fences should match the corresponding road traffic markings, and should not conflict with other traffic management facilities such as road traffic signs, markings, and signal lights.

3. The installation and setting of the isolation fence should be firm, durable, eye-catching, and easy to maintain.

4. The traffic barrier should not be easy to climb, cross and cross.

5. The setting of the traffic barrier should not hinder the safe driving sight distance, and the advertising should not be installed on the traffic barrier, and the billboard should not be installed.

6, set up motor vehicle fence and machine non-isolation fence, should be installed at the end and the middle section of the direction of the vehicle reflective warning device, the middle section of the installation of reflective warning device spacing should be less than or equal to 6m, should be installed at the end of the motor vehicle fence and machine non-isolation fence reflective warning post or luminous warning post and other facilities, reflective warning post retroreflective performance should comply with GB T18833, luminous warning post should comply with the provisions of GA T1246.

7. The structure and style of the traffic barrier in the same section should be kept unified.

Legal basis: Road Traffic Safety Law of the People's Republic of China

Article 1 This Law is enacted for the purpose of maintaining road traffic order, preventing and reducing traffic accidents, protecting personal safety, protecting the property safety and other lawful rights and interests of citizens, legal persons and other organizations, and improving traffic efficiency.

Article 2 Vehicle drivers, pedestrians, and passengers within the territory of the People's Republic of China, as well as units and individuals related to road traffic activities, shall abide by this Law.

Article 3 Road traffic safety work shall follow the principles of management in accordance with law and convenience for the masses, and ensure the orderly, safe and smooth flow of road traffic.