Stiffening device for bridge pier foundation and its implementation method
An implementation method and basic technology, which can be used in civil engineering construction, railway bridge construction, cities across rivers, and road fields, and can solve the problems of weak resistance to overturning damage of open excavation foundations, etc.
Active Publication Date: 2021-04-20
唐峰
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Problems solved by technology
[0003] The purpose of the present invention is to face the difficulties in the prior art, and propose a stiffening device for bridge pier foundations and its implementation method to solve the problem of weak resistance to overturning damage of open-cut foundations of piers and abutments commonly used in engineering
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[0029] refer to Figure 1 to Figure 3 , the present invention is a kind of implementation method that is used for the stiffening device of bridge abutment foundation, comprises the following steps:
[0030] Step 1: Drill the hole according to the predetermined position. The hole depth is the same as the depth of the screw rod, and the hole diameter is 3-15mm larger than the screw rod. The drill hole is drilled with an electric hammer impact drill, and the surface of the hole has sufficient roughness;
[0031] Step 2: Use a hard bristle brush to clean the floating skin on the hole wall, and then use an air compressor to blow off the dust and rock debris in the hole, while ensuring that the hole is dry;
[0032] Step 3: Use mortar or colloid to inject from the bottom of the hole until it fills 2 / 3 of the hole. After inserting the screw, the mortar or colloid will fill the entire hole;
[0033] Step 4: Slowly screw the screw into the hole to the bottom of the hole, remove the ex...
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The invention proposes a stiffening device for bridge pier foundations and its implementation method, including bolts, steel plates and filling materials, the lower part of the bolts is bonded with the weathered rock mass in the base through the mortar or colloid filled in the bolt holes Or glued together, the upper part of the bolts is set in the foundation concrete of the abutment, and the bolts are connecting members for the upper foundation to transmit the pulling force and shear force of the lower rock mass; the bolts are arranged in an arrangement on the surface of the rock mass to form a bolt group, the steel plate is set in the concrete of the pier foundation, and becomes a stiffened part of the pier foundation, the bolt group is anchored on the same steel plate, and together with the steel plate, forms an integral load-bearing member, and jointly bears the load transmitted by the concrete foundation. On the one hand, it solves the problem of weak ability to resist overturning damage of open-cut foundations commonly used in engineering, and on the other hand, it also solves the problems of difficult drilling of pile foundations on moderately weathered rock strata and high economic costs, and has a short construction period. , Economical and practical features.
Description
【Technical field】 [0001] The invention relates to the technical field of civil engineering construction, in particular to a stiffening device for bridge pier foundations and an implementation method thereof, which can be applied to the fields of city, highway and railway bridge construction across rivers. 【Background technique】 [0002] The bridge foundation is the lowest part of the bridge structure directly in contact with the foundation, and is an important part of the bridge substructure. A part of the stratum that bears the load from the foundation is called the foundation. After the foundation and the foundation are subjected to various loads, they will produce stress and deformation. In order to ensure the normal use and safety of the bridge, the foundation and foundation must have sufficient strength and stability. Sex, deformation should also be within the allowable range. Commonly used pier and abutment open cut foundations are generally directly located on solid ...
Claims
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IPC IPC(8): E02D27/42
Inventor 唐峰
Owner 唐峰