Modular prefabricated segment assembled railway solid pier
A prefabricated assembly and modularization technology, applied to bridges, bridge parts, bridge materials, etc., can solve the problems of too large segments, difficult transportation and hoisting, etc., and achieve the effects of reducing engineering costs, improving construction efficiency, and reliable connection methods
Inactive Publication Date: 2019-05-21
BEIJING UNIV OF TECH
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Problems solved by technology
The system can be stacked not only vertically, but also horizontally through multiple interconnectable modular reinforced concrete segments to solve the problem that the segments of prefabricated piers are too large to be transported and hoisted
Method used
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[0035] The specific implementation manner of the present invention will be described in detail below in combination with the technical scheme and accompanying drawings.
[0036] The method for making the above-mentioned modular prefabricated segmental assembled pier based on the block stacking concept includes the following steps:
[0037] 1) Complete the prefabrication work of section 1, module 7, module 8, module 9, module 10, and section 4 in the prefabrication factory. Grooves and bosses with shear keys respectively. After prefabrication work is completed, all prefabricated components are transported to the site.
[0038] 2) Clean the groove and boss of the shear key on the module and the upper surface of the module, and apply epoxy adhesive 14 on the segment contact surface and the mortise and tenon part of the module.
[0039] 3) Place the module as follows Figure 3-4 The assembly method is assembled into segment 2 and segment 3.
[0040] 4) if figure 1shown. Accor...
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The invention discloses a modular prefabricated segment assembling railway solid pier. The solid pier consists of three segments stacked together. The first segment is a complete one, the second segment consists of three modules, and the third segment consists of four modules, and the modules are closely occluded by mortise and tenon connections. Grooves and bosses of shear keys on the modules, the upper surfaces of the modules, the segment contact surfaces and the mortise and tenon connection portions of the modules are coated with an epoxy adhesive. Pre-embedded bellows are arranged on the segments in the length direction, and pre-embedded porous channels are kept in the same position so that prestressing bars and ordinary steel bars can run through the channels and are connected. High-strength slurry is injected between bellows and prestressing rebars, ultra-high performance UHPC is injected between the bellows and ordinary steel bars, and the prefabricated pier segments are connected as a whole. The pier segments are divided into several modules, the size and the mass are reduced, the prefabrication in a factory is convenient and fast, the construction efficiency is greatly improved, and the engineering cost is reduced.
Description
technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a modular prefabricated section assembled railway solid bridge pier based on the concept of block stacking. Background technique [0002] At present, the application status of domestic bridge construction technology is mainly based on the method of pouring on site, supplemented by some prefabricated assembly methods. However, on-site pouring requires the erection of a large number of brackets and formwork, and the binding of steel bars, which is highly dangerous and inefficient, and the construction period is long, which greatly interferes with normal traffic and the environment around the city. The prefabricated segmental assembly technology has good construction safety, high construction efficiency, guaranteed quality, short cycle and low environmental pollution, which can well make up for the shortcomings of on-site pouring. [0003] In the process of railway const...
Claims
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IPC IPC(8): E01D19/02E01D101/28
Inventor 韩强程琪珉陈克坚杜修力
Owner BEIJING UNIV OF TECH