Precast segment assembled concrete filled steel tube bridge pier based on bolted connection

A technology of concrete-filled steel tubes and prefabricated steel tubes, applied in bridges, bridge parts, bridge materials, etc., can solve problems such as damage and large residual displacement, and achieve the effects of reducing traffic delays, convenient construction, and strong shear bearing capacity

Active Publication Date: 2016-03-09
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the segmental assembly technology proposed at home and abroad is mainly aimed at ordinary concrete piers. The bridge piers are prefabricated into multiple reinforced concrete segments, and the prefabricate

Method used

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  • Precast segment assembled concrete filled steel tube bridge pier based on bolted connection
  • Precast segment assembled concrete filled steel tube bridge pier based on bolted connection
  • Precast segment assembled concrete filled steel tube bridge pier based on bolted connection

Examples

Experimental program
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Embodiment 1

[0030] Step 1: Process node pre-embedded steel connector 2, steel pipe concrete segment 3, and connecting steel pipe 4 between segments, specifically including the following steps:

[0031] 1) Fabricate the steel pipe concrete section 3, manufacture the steel pipe concrete section 3 in the factory, weld the inner stiffeners 7 to both ends of the steel pipe section 11, process reserved bolt holes at both ends, connect the preset nuts with the reserved After the axis of the bolt hole is aligned, it is spot welded and fixed, and the concrete is poured for curing;

[0032] 2) Make the node pre-embedded steel connector 2, make the node pre-embedded steel connector in the factory, weld the inner stiffener 7, the end welded steel plate 8 and the outer stiffener 10, and process the reserved bolt hole 13;

[0033] 3) Make the inter-segment connecting steel pipe 4, make the inter-segment connecting steel pipe in the factory, and process the reserved bolt holes 13;

[0034] Step 2: Asse...

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PUM

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Abstract

The invention relates to a precast segment assembled concrete filled steel tube bridge pier based on bolted connection, and belongs to the field of bridge engineering. The precast segment assembled concrete filled steel tube bridge pier comprises joint embedded steel connecting parts, precast concrete filled steel tube segments, inter-segment connecting steel tubes and high-strength bolts, wherein each concrete filled steel tube segment comprises a concrete filled steel tube, inner stiffening ribs, reserved bolt holes and preset nuts; each joint embedded steel connecting part comprises an embedded steel tube, an end welding steel plate, inner stiffening ribs, outer stiffening ribs and reserved bolt holes; reserved bolt holes are formed in the two ends of each inter-segment connecting steel tube; the precast concrete filled steel tube segments are connected through the reserved bolt holes by depending on the inter-segment connecting steel tubes and adopting the high-strength bolts; and the precast concrete filled steel tube segments are connected with an upper bent cap and a lower bearing platform through the joint embedded steel connecting parts by adopting the high-strength bolts. The precast segment assembled concrete filled steel tube bridge pier has the characteristics of being high in compression resistance and shear bearing capacity, easy to industrially manufacture, convenient to construct, energy-saving and environment-friendly in use, and the like, can remarkably shorten the construction period of bridge piers, and provides a quick and effective solution for quick bridge construction in highly seismic regions.

Description

technical field [0001] The invention belongs to the field of bridge engineering, and in particular relates to a prefabricated section-assembled steel pipe concrete bridge pier. Background technique [0002] One of the main challenges that the current urban bridge construction is facing is that in addition to the safety and durability of the bridge structure, the owners and residents also hope to minimize the disturbance to the surrounding traffic during the construction of the bridge structure and shorten the traffic jam time caused by the bridge construction. Reduce various noises generated by engineering transport vehicles and construction. These requirements have promoted the development of bridge engineering industrialization technology, among which the prefabricated assembly technology is produced under this background, and the segmental assembly technology provides a favorable solution for the construction of fast, efficient, safe and durable urban bridge engineering. ...

Claims

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Application Information

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IPC IPC(8): E01D19/02E01D101/24E01D101/30
CPCE01D19/02E01D2101/24E01D2101/30
Inventor 杜修力张强贾俊峰宋年华赵建瑜韩强亓路宽
Owner BEIJING UNIV OF TECH
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