Views: 2 Author: Site Editor Publish Time: 2024-01-22 Origin: Site
During the installation process, be sure to pay attention to the level, straightness, and height of the column. It is recommended that before installation, a horizontal line should be played on the wall base to control the level of the column, a height reference line should be played on the side of the wall base to control the installation height of the column, and a level should be used to calibrate the verticality of the column. Guardrail brackets can be divided into roadside guardrails and divider guardrails according to their installation orientation. Stainless steel pipes should protrude from the bottom of the structure by no less than 30mm, and the longitudinal spacing should not be greater than 4 m.b. For overpasses and bridges on highways, stainless steel pipes should not be hung directly under the slabs. Stainless steel pipes can be directly led through longitudinal and vertical drainage pipes. Above ground, stainless steel pipes are suitable for paving structures with layers.
The inner diameter of the stainless steel pipe is generally 0.100.15m. The lower end of the pipe should extend at least 0.150.20m below the bottom of the roadway slab to prevent the surface of the main beam ribs from getting wet. The pipe body is smooth, has no trachoma, and has a long service life. It is ideal for highway and railway drainage. systematic. Stainless steel pipes and qualified cast iron pipes can be used for more than a hundred years. The place where rust is most likely to occur is where the outer wall is in contact with the soil. Because of its high humidity and rich oxygen content. Qualified anti-corrosion can effectively resist rust.
Although there is water flow on the inner wall for a long time, it lacks oxygen and is less susceptible to corrosion than the outer wall, but a cement lining is necessary. The orifice is located in the wave trough. Due to the two-way effect of the wave crest and the filter fabric, the orifice is not easily blocked and the water permeability system is improved. The construction of stainless steel pipes should be implemented according to planning requirements. The stainless steel pipes should protrude from the bottom of the structure by no less than 30mm, and the longitudinal spacing should be no more than 4m. For bridges on overpasses, stainless steel pipes should not be hung directly under the slab. Stainless steel pipes can be directly led to stainless steel pipes on the ground through longitudinal and vertical drainage pipes, which is suitable for pavement structures with waterproof layers.
The installation matters of the guardrail bracket are related to the dimensions of the cast iron guardrail bracket. When the longitudinal slope of the cast iron guardrail bracket is not greater than 1%, the stainless steel pipe can be directly installed on the pier, but the required thickness due to the effect of the longitudinal slope should be considered. When the gradient of the longitudinal slope is greater than 1%, embedded steel plates, concrete pads, or other measures should be used to level the beam bottom, and the PTFE slide supports should be installed horizontally.