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  • 橋梁護欄的高度有什么要求
  • 本站編輯:杭州楷高實業有限公司發布日期:2019-04-04 18:09 瀏覽次數:

1、人行道或安全帶外側的欄桿高度不應小于1.10m。欄桿構件間的最大凈間距不得大于140mm,切不宜采用橫線條欄桿。橋梁護欄欄桿結構設計必須安全可靠,欄桿底座應設置錨筋,其強度應滿足國家規范要求。

2、橋梁護欄欄桿強度應滿足:車輛以80KM/H的速度,與欄桿成15°角發生碰撞,不落河。

3、橋梁護欄欄桿造型、色調與周圍環境協調,對重要橋梁宜作景觀設計。

4、當橋梁跨越快速路、城市軌道交通、高速公路、鐵路干線等重要交通通道時,橋面人行道欄桿上應加設護網,護網高度不應小于2m,護網長度宜為下穿道路的寬度并各向路外延長10m。

5、作用在橋上人行道欄桿扶手上豎向荷載應為1.2KM/m;水平向外荷載應為2.5KM/m。兩者應分別計算

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1. The height of the railings outside the sidewalk or seat belt should not be less than 1.10m. The maximum net spacing between railings should not be greater than 140 mm, and horizontal railings should not be used in cutting. The structure design of bridge guardrail must be safe and reliable. The anchor bars should be set on the base of the guardrail, and its strength should meet the requirements of the national code.

2. The strength of bridge guardrail should be satisfied: the vehicle collides with the guardrail at a speed of 80KM/H at an angle of 15 degrees and does not fall into the river.

3. The shape and tone of the bridge guardrail are in harmony with the surrounding environment. It is suitable for landscape design of important bridges.

4. When bridges cross important traffic channels such as expressways, urban rail transit, expressways and trunk railways, protective nets should be installed on the pavement railings on the deck of bridges. The height of protective nets should not be less than 2m, and the length of protective nets should be the width of the underpass roads and extended by 10m in each direction.

5. The vertical load acting on the handrails of the pedestrian railings on the bridge should be 1.2KM/m, and the horizontal outward load should be 2.5KM/m. They should be calculated separately.