Performance test method for wood and steel columns of plastic-sprayed guardrail

  • Categories:Common Problem
  • Author:
  • Origin:
  • Time of issue:2018-12-11
  • Views:298

(Summary description)The current spray-plastic barrier board specifications require that steel columns be placed in a concrete foundation, but wooden columns do not require a concrete foundation.

Performance test method for wood and steel columns of plastic-sprayed guardrail

(Summary description)The current spray-plastic barrier board specifications require that steel columns be placed in a concrete foundation, but wooden columns do not require a concrete foundation.

  • Categories:Common Problem
  • Author:
  • Origin:
  • Time of issue:2018-12-11
  • Views:298
Information

The current spray-plastic barrier board specifications require that steel columns be placed in a concrete foundation, but wooden columns do not require a concrete foundation. Due to this requirement, the steel column guardrail system is not as economical as the wooden column guardrail system. It is necessary to determine whether the concrete foundation is the steel melon beam column as a traffic barrier system. Usually these tests focus on the damage of the track and the vehicle, the guidance response of the vehicle, and the collection and distribution capabilities of the guardrail system.

 

Performance

 

Analyze the model to simulate the spray-coated guardrail as a horizontally loaded borehole shaft. The model fully represents the actual behavior of the borehole shaft under laterally loaded conditions. At the same time, it is simple enough to be used in the daily design of the guardrail pile foundation. A series of static load tests and dynamic impact tests were carried out to determine whether the steel guardrail column performed satisfactorily. The results of these tests show that steel guardrail posts without concrete foundations function similarly to timber posts.

The results of these experiments were also used to verify the analytical model, and it was found that the consistency with theoretical predictions was satisfactory. The main function of guardrails and intermediate barriers is to safely guide vehicles. Guardrail devices can prevent vehicles from entering steep embankments or fixed objects, and intermediate guardrail boards are used between separate highway roads to prevent intermediate collisions with reverse traffic.

A properly designed device can realize the guidance of the wrong vehicle, thereby minimizing the vulnerability of the vehicle occupants and the participation of following and adjacent traffic. When a moving vehicle collides with the guardrail, most of the energy of the vehicle is absorbed by the guardrail. The lateral force carried by the plastic-sprayed guardrail board is transmitted to the ground through the guardrail post.

Since resistance and energy loss are provided by the soil around the guardrail post, the soil properties of the site will determine the behavior of the guardrail post. Although the efficiency of various types of guardrail systems as highway guardrails has been extensively studied, there are few studies on the influence of soil characteristics on the performance of guardrail posts.

The current specifications of plastic-sprayed guardrails require the minimum diameter of the wooden column, the top of the wooden column is dome-shaped, if the top of the wooden column is inclined, the minimum total length is 66 inches. The code does not require the wooden pillars to be placed in the concrete foundation. The current specifications of the steel guardrail are the same as the inclined wooden column, with one exception:. Steel pillars must be placed on the concrete foundation. Due to this requirement for concrete foundations, steel pillar guardrail systems are not as economical as wooden pillar guardrail systems. So far, no experimental work has been carried out to determine whether steel pillar guardrail systems require concrete foundations. People satisfactorily as cross-sprayed guardrails, and the use of wooden posts.

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Three wave guardrail wholesale
Three wave guardrail wholesale
Three wave guardrail wholesale
The total length of the guardrail is 4.32 meters (4 meters after installation), the distance between the columns is 4 meters. The width of the fence is 506MM, and the thickness: 4MM.
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Three wave guardrail wholesale
Three wave guardrail wholesale
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The total length of the guardrail is 4.32 meters (4 meters after installation), the distance between the columns is 4 meters. The width of the fence is 506MM, and the thickness: 4MM.
Learn More
Two-wave guardrail wholesale
Two-wave guardrail wholesale
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The thickness of the thinnest guardrail board is 2.5mm, and the thinnest column is 3.5mm. In the case of a large number, a 3.0mm column can be customized.
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Time of issue:2020-12-30 15:54:05

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