First, strengthen the preventive maintenance and repair of pavement and extend the service life of pavement.
Strengthening the preventive maintenance of highway is the premise of prolonging the service life of highway and maintaining the good use function of pavement. In daily maintenance work, preventive maintenance measures should be taken in accordance with the principle of "accurate prediction and pre-repair before damage" when the pavement has not been damaged or just shows signs of disease, so as to eliminate the disease in the bud. In view of pavement cracks, technical measures are taken to prevent rainwater from invading the pavement and damaging the subgrade structure according to the principle of "irrigation must be carried out in case of cracks, and irrigation must meet the standards". In hot summer, after the pavement temperature exceeds a certain limit, active sprinkling can effectively slow down the occurrence of pavement rutting, maintain good pavement performance, prolong the service life of pavement and reduce maintenance costs. Through the preventive maintenance of the pavement, good road conditions such as no bump at the bridge head, no potholes and no exposed joints are realized, which provides a comfortable traffic environment for drivers and passengers.
Second, keep the subgrade in good condition and reduce the frequency of subgrade diseases.
Subgrade is an important part of highway and the foundation of pavement, which bears the vehicle load together with pavement. The strength and stability of subgrade are the basic conditions to ensure the stability of pavement structure and good road performance.
Most subgrade diseases are related to the function of water, so the prevention and treatment of subgrade diseases mainly focus on drainage, waterproofing and water control. In the daily maintenance work, the blocked drainage channels and side ditches should be dredged and cleaned in time to ensure their full utilization. Before the flood season, carefully check the subgrade and weak drainage sections along the line, and find all kinds of unsafe hidden dangers in time and deal with them; Strengthen inspection in flood season, and timely repair subgrade diseases such as water damage, drainage groove damage, and water retaining belt cracks. Strengthening the maintenance of centralized drainage facilities such as water retaining belt, water intake, drainage trough and side ditch is a concrete work to reduce the frequency of subgrade diseases and do a good job in preventive maintenance of subgrade.
Third, do a good job in daily maintenance of bridges and culverts to ensure smooth and safe bridges.
In order to ensure that the bridge structure is always in a good technical state and meet the requirements of bearing capacity and traffic capacity, it is necessary to carry out regular inspection and detection of the bridge in daily maintenance. In the usual daily maintenance, the bridge deck should be kept clean, the drainage holes should be unblocked, the drainage facilities should be good, the bearings should be in good condition and there is no cavity, the damaged bridge railings and expansion joints should be repaired in time, the weeds on the conical slope should be removed, and the garbage and deposits at the entrance and exit of culverts should be cleared to ensure the smooth and safe bridge.
Four, keep the facilities function perfect, standardize the operation, ensure smooth.
Maintaining the functionality of facilities along the line is an important part of daily maintenance. For the maintenance of guardrail boards and guardrails, we should strictly follow the maintenance time limit and strictly control the maintenance quality to ensure the restoration of their original functions after maintenance. Anti-glare board facilities should be kept complete and in good condition, and the overall visual effect should be unified. It is necessary to regularly scrub the markings of the main line and interchange area to maintain their good reflective effect, strengthen night inspections, increase the frequency of cleaning the sections with poor reflective effect, and repair the aging or damaged markings in time. Signs and markings should be complete, eye-catching, clear and complete, and give full play to the role of various parts and facilities of highways.
In daily maintenance work, it is necessary to ensure standardized construction and safe construction, implement standardized standards, strictly follow operating rules and standards, ensure the safety of construction personnel in the construction process, and escort drivers and passengers with a high sense of responsibility and mission.
Five, strengthen the greening management, keep the road beautiful.
Greening and beautifying is one of the important contents of conservation in expressway. It is an important factor to prevent soil erosion, stabilize subgrade, reduce noise, protect environment and create a beautiful and comfortable driving environment. It is also a beautiful scenery in expressway. According to the needs of tree production and the special requirements of highway traffic, technical measures such as watering, fertilization, pruning, pest control and so on are taken in time to keep the greening things in a good growth state. Maintain greening plants, remove sundries, prevent damage caused by other reasons, fill vacancies in time, improve the survival rate and preservation rate of seedlings, and realize their ecological functions and landscape effects.