Abutment body extraversion reinforcement method for U-shaped bridge abutment
An abutment and U-shaped technology, which is applied in the field of the camber reinforcement of the U-shaped abutment, can solve the problems of not being able to guarantee complete effectiveness, failing to eliminate soil side pressure, etc., achieving high strength and avoiding the effect of jumping at the bridge head.
Active Publication Date: 2014-11-12
广东金盾加固补强工程有限公司
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Problems solved by technology
This method can limit the camber of the platform body, but it cannot eliminate the excessive soil lateral pressure inside the platform, so it cannot guarantee complete effectiveness
Method used
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[0015] Such as figure 1 , figure 2 As shown, the abutment camber reinforcement method of U-shaped abutment of the present invention comprises the following steps:
[0016] (1) Dig out the road surface and boards within the scope of the two side walls of U-shaped abutment 1 (not shown in the figure);
[0017] (2) Excavate the fill 2 in the U-shaped abutment 1, and fill up the pit left after the excavation of the fill 2 with mortar rubble or rubble concrete in the U-shaped abutment 1;
[0018] (3) The grouted rubble or rubble concrete is flush with the top of the U-shaped abutment 1, therefore, there is no need to set up the abutment plate behind the abutment of the U-shaped abutment 1.
[0019] The excavation depth is at least the part of the filling soil above the conical slope protection surface of U-shaped abutment 1, and replace it with masonry rubble or low-strength rubble concrete to completely eliminate the lateral pressure of the soil in this range. After reinforcem...
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The invention discloses an abutment body extraversion reinforcement method for a U-shaped bridge abutment. The abutment body extraversion reinforcement method comprises the following steps: (1) chiseling a road surface and a butt strap in the range of the U-shaped bridge abutment; (2) digging out filled soil in the U-shaped bridge abutment, and filling and leveling up a pot hole formed after digging out the filled soil by using mortar rubbles or rubble concrete in the U-shaped bridge abutment; and (3) enabling the mortar rubbles or the rubble concrete to be flush with the top end of the U-shaped bridge abutment, and not setting a bridge head butt strap on the abutment back of the bridge abutment. The filled soil in the abutment with the digging depth of at least above the conical slope protection surface of the U-shaped bridge abutment 1 is replaced with the mortar rubbles or the low-strength rubble concrete so as to radically eliminate the soil side pressure in the range. After the bridge abutment is reinforced, the diseases are not developed, and the bridge abutment is free from side pressure and settlement and high in strength. The bridge head butt strap can be not arranged on the abutment back of the U-shaped bridge abutment, so that the phenomenon of bump at bridge-head can be avoided.
Description
technical field [0001] The invention relates to a bridge abutment reinforcement method, in particular to a U-shaped abutment body camber reinforcement method. Background technique [0002] Due to its simple structure and low cost, the U-shaped abutment is the most widely used abutment form in active bridges today. Most of the U-shaped abutments use stone abutments. After years of use, it has been found that some abutments have tilted outwards, the connection between the front wall of the abutment and the side walls is cracked vertically from top to bottom, and the front wall of the abutment is tilted toward the bridge span to push the expansion joints. The side walls of the platform body are inclined to the two outer sides. The conical revetments on both sides of these abutments are often relatively short, which has insufficient protection for the side walls. If the foundation does not have uneven settlement with large settlement around the abutment and small settlement i...
Claims
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IPC IPC(8): E01D22/00
Inventor 单成林余锦州许薛军雷江涛
Owner 广东金盾加固补强工程有限公司