Construction method of connecting structure of partially-filled steel tube concrete pier with self-resetting function and foundation
A steel tube concrete and connection structure technology, applied in bridges, bridge construction, bridge parts, etc., can solve the problems of large permanent residual deformation, small lateral stiffness, low bearing capacity, etc., to achieve reduced residual deformation, safe and reliable quality, The effect of good seismic performance
Pending Publication Date: 2021-06-29
DALIAN OCEAN UNIV
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Problems solved by technology
It has the advantages of small permanent deformation after earthquake and good recoverability, but this type of pier has small lateral stiffness and low bearing capacity, so it is not suitable for bridges with heavy traffic
[0004] In the use of two traditional ductile piers and self-resetting piers, there is a common problem: the way the joint components are set
However, the accumulated deformation of such piers from elastic deformation to plastic deformation will cause a large permanent residual deformation after the earthquake.
Minor damage can be repaired, while severely damaged bridges need to be rebuilt, which is time-consuming and labor-intensive and affects the normal traffic function of the bridge
[0006] (2) For the traditional self-resetting piers, the pier columns and the caps are connected by hinges. This type of connection is prone to compression damage at the joints. Shear failure of stressed steel bars
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0027] Such as figure 1 , 2 As shown, the construction method of the connection structure between the partially filled concrete filled steel pipe concrete pier and the foundation with self-resetting function includes the following steps:
[0028] Step 1: Pouring concrete cap 9
[0029] Embed the support nut 11 in the foundation and anchor one end of the prestressed steel strand 6 and the prestressed steel bar 8; install a rectangular steel plate 14 on the foundation, pour a concrete cap 9 above the rectangular steel plate 14, and set the center of the concrete cap 9 For the reserved hole A, a plurality of reserved holes B10 are set around the concrete cap 9; the prestressed steel strand 6 is passed through the reserved hole A, and a plurality of prestressed steel bars 8 are passed through the reserved hole B10;
[0030] Step 2: Install steel pipe 1 and perforated plate 12
[0031] A perforated plate 12 is installed on the top of the concrete cap 9, and a steel pipe 1 is ins...
Embodiment 2
[0037] Such as Figure 4 As shown, the difference from Example 1 is that the cross-sectional shape of the steel pipe 1 is circular.
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The invention relates to the field of bridge engineering, in particular to a construction method of a connecting structure of a partially-filled steel tube concrete pier with a self-resetting function and a foundation. According to the technical scheme, the method comprises the following steps: 1, a concrete bearing platform is poured; 2, a steel pipe and a perforated plate are mounted; and 3, prestressed steel strands and prestressed steel bars are tensioned. According to the construction method of the connecting structure of the partially-filled steel tube concrete pier with the self-resetting function and the foundation, the connecting structure has enough bearing capacity and also has the self-resetting capacity.
Description
technical field [0001] The invention relates to the field of bridge engineering, in particular to a construction method of a partially filled steel pipe concrete bridge pier and foundation connection structure with self-resetting function. Background technique [0002] Traditional ductile bridge piers have high bearing capacity, good ductility, and excellent seismic performance, but poor recoverability after earthquakes. [0003] The traditional self-resetting bridge pier is composed of load-bearing components, self-resetting components, energy-dissipating components and joints, and is a new type of seismic pier system that has emerged in recent years. It has the advantages of small permanent deformation after earthquake and good recoverability, but this type of pier has small lateral stiffness and low bearing capacity, so it is not suitable for bridges with heavy traffic. [0004] There is a common problem in the use of the two traditional ductile piers and self-resetting ...
Claims
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IPC IPC(8): E01D21/00E01D19/02
CPCE01D21/00E01D19/02
Inventor 马玥付明春刘颖于丰纶王占飞
Owner DALIAN OCEAN UNIV