Unlock instant, AI-driven research and patent intelligence for your innovation.

A construction method of pre-bent glulam-concrete composite beam

A construction method and concrete technology, which is applied to girders, bridges, joists, etc., can solve the problems of complex construction technology, large amount of steel consumption, and high cost of single-span construction, and achieve simple construction technology, strong operability, and simplified construction The effect of equipment and construction process

Active Publication Date: 2022-03-08
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rapid improvement of my country's national economic level, scientific and technological innovation has been vigorously advocated in recent years, and the design and construction technology of pre-bent composite beams have also been greatly developed. However, there are still insurmountable gaps in the large-scale application, which mainly include: Problems such as large amount of steel used, relatively high cost of single-span construction, and relatively complicated construction technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A construction method of pre-bent glulam-concrete composite beam
  • A construction method of pre-bent glulam-concrete composite beam
  • A construction method of pre-bent glulam-concrete composite beam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as Figure 1 - Figure 10 As shown, a pre-bendered well-concrete combined beam construction method, this embodiment is the construction method of the intended cross-section pre-bendered well-concrete combination beam, including the following steps:

[0045] a. Selecting a curved ingredient cross-section glue wood beam 18 as a combined beam, a combined beam: ignition-based cross-section glue wood beam relative to the ingredient cross-sectional steel beam, the glue wood itself is from design, sheeting materials Processing and other aspects have simpler manufacturing processes and costs, replace welding in a glue, can effectively reduce the stress concentration and fatigue injury caused by welds. Due to the design of different spans depending on the size of the wing edge, there is more selectivity and greater flexibility. In consideration of the wooden beams play a prestressed and load-bearing in the entire combination beam, the web and wings of the inert-like cross-section...

Embodiment 2

[0061] Such as Figure 12 - Figure 16 As shown, a pre-bendered well-concrete combined beam construction method, the present embodiment is the construction method of rectangular cross-section pre-bending wood-concrete combined beams, including the following steps:

[0062] a. Selecting a curved rectangular cross-section glue wood beam 21 as a combined beam: rectangular cross-section glue wood beam relative to the inert-like cross-sectional steel beam, its advantage is that it can be from the vicinity, span and size, etc. Wooden beam design and manufacturing, truly reduced the production process of the original pre-architeral cross-sectional steel beam, which effectively reduces the stress concentration and fatigue injury of the type cross-sectional steel beam due to weld. Pre-bendered Wooden beams play a prestressed role in the entire combination beam, and also acts as an external load. The wooden beam can select a structural complex of rectangular cross section LVL (single layer), ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A construction method of pre-bent glulam-concrete composite beams, comprising the following steps: a. selecting a curved glulam beam as the embedded rigid skeleton of the composite beam; b. drilling several holes at the center line of the curved glulam beam , pass the steel strands in the drilled holes, and install the extrusion head at the end of each steel strand at the bottom of the glulam beam; c. Fix the curved glulam beam arch downward, and install the upper support on the upper part of the curved glulam beam frame, the upper support frame is fixedly connected to the curved glulam beam; d. the ends of the steel strands passed through the curved glulam beam in step b are centered on the tool anchor; e. between the top of the upper support frame and the tool anchor Install the reaction device; f. Formal pre-bending, load the reaction force step by step through the reaction device until the glued wood beam reaches the level state of no camber and no deflection; g. Pouring the first-stage concrete; h. The strength of the first-stage concrete reaches After 95%, release the pre-bending force and pour the second phase concrete. The invention has simple construction technology and strong operability.

Description

Technical field [0001] The present invention relates to the field of architecture and bridge engineering, and more particularly to a pre-bendered well-concrete combined beam construction method. Background technique [0002] The pre-bending combination beam is a new combination structure system developed by the characteristics of the steel concrete structure and partial prestressed concrete. Since the first inventions in 1949, after years of research and practice, it has been widely used in Europe and America and Japan. Applied in housing construction, port, bridges and underground works. With the rapid improvement of my country's national economic level, in recent years, we have advocated scientific and technological innovation, and the design and construction technology of pre-bending combined beam has also been greatly developed, but there is still an insurmountable divide from a large scale application, including: The amount of steel is large, and the single-span cost cost is...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/12E04G21/02E04C3/29E01D21/00E01D19/00E01D101/10E01D101/28
CPCE04G21/12E04G21/121E04G21/02E04C3/29E01D21/00E01D19/00E01D2101/10E01D2101/28
Inventor 徐云王雪娇
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER