Design method for increasing limit height of gravity abutment
A design method and technology of limit height, applied in bridge construction, bridges, bridge parts, etc., can solve the problems of increasing the limit height and small limit height of the gravity abutment, and achieve the enhancement of the stability of the front wall and the increase of the limit height. , the effect of reducing the scale of construction
Active Publication Date: 2020-02-18
SHANXI TRAFFIC PLANNING PROSPECTING & DESIGN INST
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[0003] In order to solve the problem that the limit height of the traditional gravity abutment is small, the present invention provides a design method for increasing the limit height of the gravity abutment
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[0020] A design method for increasing the limit height of a gravity abutment, which is realized by the following steps:
[0021] Step 1: Measure the transverse width of the gravity abutment; if the transverse width of the gravity abutment is less than the set threshold, use several prestressed anchor cables 1 to connect the two side walls 2 of the gravity abutment to pull together;
[0022] Step 2: Measure the gradient of the transverse bridge of the gravity abutment to the ground line 3; if the gradient of the transverse bridge of the gravity abutment to the ground line 3 is greater than the set threshold, several prestressed anchor cables 1 are used to tie the gravity bridge to the ground line 3. The side wall 2 of the platform is anchored together with the mountain body 4;
[0023] Step 3: Add an unloading platform 6 on the back of the front wall 5 of the gravity abutment.
[0024] In the first step, the set threshold of the width of the transverse bridge of the gravity a...
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The invention relates to a gravity abutment, in particular to a design method for increasing the limit height of a gravity abutment. The problem that a traditional gravity abutment is small in limit height is solved. The method includes the following steps of firstly, measuring the transverse bridge direction width of the gravity abutment, and if the transverse bridge direction width of the gravity abutment is smaller than a set threshold, pulling two side walls of the transverse bridge direction width of the gravity abutment towards each other through a plurality of prestress anchor ropes; secondly, measuring the gradient of the transverse bridge direction ground line of the gravity abutment, and if the gradient of the transverse bridge direction ground line of the gravity abutment is larger than the set threshold, anchoring the side walls of the gravity abutment and a mountain body together through a plurality of prestress anchor ropes; and thirdly, adding an unloading platform on the wall back face of a front wall of the gravity abutment. The method is suitable for designing the gravity abutment.
Description
technical field [0001] The invention relates to a gravity abutment, in particular to a design method for increasing the limit height of a gravity abutment. Background technique [0002] Gravity abutments are widely used in highway bridges in mountainous areas, and are characterized by relying on their own weight to balance external forces and maintain their stability. Practice has shown that due to the low upper limit of the stability of the traditional gravity abutment, there is generally a problem of a small limit height (usually controlled at about 12m). The small limit height of the abutment will increase the length of the bridge. Lead to bridge construction scale is too large, on the other hand easily lead to bridge cost is too high. Based on this, it is necessary to invent a design method to increase the ultimate height of the gravity abutment to solve the problem that the ultimate height of the traditional gravity abutment is small. Contents of the invention [00...
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IPC IPC(8): E01D19/02
CPCE01D19/02
Inventor 陈宏治许志刚袁正兵刘宇鹏刘小军崔兰莫恩华满冠峰潘会滨
Owner SHANXI TRAFFIC PLANNING PROSPECTING & DESIGN INST