How to cast the formwork of the bridge crash wall guardrail?

The crash wall guardrail has a protective effect on the vehicles driving on the bridge, because it is to be fixed on both sides of the road, so it can only be completed by on-site pouring production, and this process can only be completed by using crash wall steel molds. The steel mold of the crash wall should have high precision and accuracy retention, and the large bearing capacity of the adaptation, and the concrete crash wall guardrail produced after being painted, the color is obvious, which can beautify the urban environment, remind pedestrians and vehicles, and improve traffic safety.

The cast-in-place crash wall guardrail mold is often multi-piece splicing and assembly together, but when assembling, it is necessary to check the splicing position and start to apply after the outer layer design reinforcement device, and the construction of the wing wall is often a one-time grouting molding on site, so the template should not move after splicing to maintain the current state and operate directly.

Workers hold brushes and dip the release agent each time.

After painting, it is used to ensure that the pouring quality of the wing wall is qualified and to check the slump of the mud.

After the start of the pouring at the same time vibrating, exhaust. The construction mode of cast-in-situ transition wing wall template is relatively basic, the construction of the crash wall and the crash barrier will be poured in this way, the formwork is dismantled after the hardness of the concrete reaches the qualified standard, and the wall is checked whether there is a honeycomb porosity or is not smooth enough, and the maintenance begins after no abnormal situation, and the template itself is cleaned and stored in a unified manner to wait for the next continued grouting construction.

There are many precautions when using the steel mold of the crash wall guardrail: the crash wall mold should be cleaned in time when it is used, and every corner of the mold should be cleaned, and detergents can be used to clean it in this process to avoid the residue of substances. Apply a layer of oil or rust remover to the surface of the mold.

It plays the role of protecting the surface of the mold, avoiding direct contact between the mold and the moisture in the air, and the wiping of the mold should be carried out after cleaning, and it should be placed in a dry and cool place for drying.

Generally, it is used to support and pour with shaped steel molds.

The first is whether the number of steel bars is correct and how the steel bars of the guardrail are welded, but these are all required to be inspected before the mold. After the mold is erected, it is to see if the reinforcement protective layer cushion block has wood, and the reinforcement is not close to the template, and now the requirements for the protective layer are very strict when the inspection is delivered. The last thing is to see how the line type of the guardrail is, whether there are folds or something.

There is a truth about the table cap, there is no leakage or something.

Anti-collision guardrail formwork:

1. The linear type is smooth (the poured crash-proof wall looks smooth) 2. The joints are tight (no slurry leakage, and the concrete joints can be smooth in appearance, and it is conducive to reducing honeycomb and hemp surface).

Table hat: 1. The top elevation is crucial!

2. The seams are tight.

There are three main forms of bridge crash walls: 1. Viaduct (including cast-in-place box girder and prefabricated box girder section) outer crash guardrail. 2. The inner side of the viaduct (including cast-in-place box girder and prefabricated box girder section) is isolated with anti-collision guardrail.

3. The collision wall on the outside of the roadbed. Generally speaking, the outer crash barrier of the viaduct (including cast-in-place box girder and prefabricated box girder section) is a 120cm high concrete crash wall (calculated from the top of the flange plate), and the hanging height is 40cm 38cm 0cm according to the precast beam, cast-in-place beam without naughty layer and side wall, ear wall, etc

On both sides of some highways or ordinary roads, we will find a variety of guardrails, especially in some dangerous places, may be common like the concrete crash barriers described below, as the name suggests, they are made of concrete, with some other strong and reliable steel products made of, and the unique structural design and guaranteed quality and service life make them in the event of an accident, can provide cushioning effect for the vehicle, It will not lead to further more terrible losses, so today's example for you is about the introduction of the concrete crash barrier foundation and the information about confusion and difference, interested friends can combine the following to understand in advance.

1. What is a concrete crash barrier?

It is a protective fence poured with reinforced concrete, and concrete projects are generally reinforced with reinforced concrete.

Anti-collision guardrails are generally used on highways or highway bridges. The so-called anti-collision, in fact, is relatively strong, to prevent impact damage, the vehicle in the event of an accident when the collision barrier will not break through the collision barrier and fall to the road or below the bridge deck to cause greater losses and**.

Second, the concrete crash barrier is not a crash wall

Yes. The crash wall is an important part of the bridge deck, and its concrete surface quality requirements are no less than the column requirements, and because the crash wall surface is arc-shaped, the construction requirements are higher.

According to the specification, it should be set when the fill slope is greater than 6m, or the outside is a volley surface.

3. The size of the concrete anti-collision guardrail

The details are as follows: the die surface steel plate is stamped and formed by a new steel plate with a thickness of 5mm, which has good integrity. Each piece of anti-collision guardrail steel formwork is long along the bridge, and the spacing of the stiffener on the outside of the formwork is about 30, mainly to ensure that the formwork is not easy to deform in the use process and hoisting process.

Fourth, the appearance appraisal standard of concrete anti-collision guardrail

1. The cast-in-place concrete anti-collision guardrail is straight and beautiful, and the surface is smooth. The color is consistent.

2, the honeycomb surface area of the concrete surface of the guardrail does not exceed the area, and the depth does not exceed 10mm.

The above is an example of a variety of information about concrete anti-collision guardrails, including basic introduction and other comparative analysis, which can be known that compared with other guardrail products, its role is mainly to play a buffering effect, especially on both sides of some railways or highways, including both sides of some dangerous road sections, we will find that the guardrail products here can provide cushioning and support for vehicles in the event of an emergency such as a car accident. To prevent them from falling into the river and causing further additional losses, interested friends can refer to the above for purchase and understanding.

Wet joints (can't do all of them, the middle part of the middle span beam is not poured first) Negative bending moment System conversion crash wall.

First negative bending moment, then wet joints. What is a crash wall? Guardrails?

(1) The pavement blocks should be firm and complete, and should be repaired or replaced in time if they are loose or defective.

2) The curb of the bridge deck should always be kept in good condition, and if there is any defect, it should be repaired or replaced in time.

3) Bridge railings and crash walls should always be kept in good condition, railing columns should be erected upright, and horizontal rods at expansion joints should be able to expand and contract freely, and if there is any defect, it should be completed in time. If the railing is found to be damaged by a vehicle, protective measures should be taken in time to avoid pedestrians or vehicles falling into the river, and at the same time, it must be repaired and restored as soon as possible.

4) If cracks or concrete spalling are found in the reinforced concrete railing, epoxy resin can be poured to close the cracks, and the damaged part should be chiseled off and repaired completely.

5) The steel railing should be cleaned and rusted frequently, and the paint should be painted regularly every year to prevent rust.

6) The railing posts or anti-collision wall ends at both ends of the bridge are painted with red and white paint 20cm wide, and the top 20cm is red, and the paint should be distinct.

7) Guardrails and crash walls should be firm and reliable, and should be repaired in time if damaged. The exposed steel components on the guardrail should be painted regularly to prevent rust, generally once a year.

Dry masonry is directly built with stone according to the internal and external erection, up and down staggered joints. The hook joint is divided into convex joints and flat joints, and the convex joints and flat joints are filled with cement mortar at the joints of the stone, and the convex joints require the joint height to exceed the masonry plane, and the flat joints should be basically in a plane with the masonry surface. The slurry stone is to connect the stones together with mortar, and use mortar to build the stone sheet.

Summary. 100 200 yuan or so.

How much is the highway crash guardrail about a meter of highway crash wall, steel bar worker, steel mold production, commodity concrete pouring, how much is the labor cost of 1 meter?

100 200 yuan or so.

Highway crash barriers are about 100 to 200 yuan a meter.