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Cable and variable-section beam-arch composite structure system

A technology of variable cross-section beams and composite structures, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of span and bearing capacity limitations, redundant upper chord materials, large loads, etc., and achieve light weight, simple system, and material saving Effect

Inactive Publication Date: 2013-09-04
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The upper chord beams and arches in the traditional cable, beam and arch composite structure system are generally fixed-length cross-sections. For long-span structures, the load generated by their own weight is relatively large, which will limit their span and bearing capacity. At the same time, There is a certain redundancy in the upper string material; in addition, the lower string cables of traditional string beams are generally exposed, which seems a bit abrupt in some architectural environments

Method used

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  • Cable and variable-section beam-arch composite structure system
  • Cable and variable-section beam-arch composite structure system
  • Cable and variable-section beam-arch composite structure system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The combined structure system of cables, variable cross-section beams and arches of the present invention mainly includes a single upper chord beam and arch 1 made of glued wood, 2 prestressed steel strand cables 2, and 1 hollow steel pipe strut-3. The bottom surface of the upper string beam and arch 1 is double-fold linear, the top surface is linear, and the top surface of the entire system is a double-slope surface. There are two square reserved holes 7 at the end of the upper string beam and arch 1, which are used to place prestressed steel. The anchorage 5 of the twisted wire cable 2 and the supporting anchor plate or anchor connector; the number of holes 6 reserved in the upper string beam and the arch 1 is 2, and a cable 2 is arranged in each hole; the cable 2 and the strut 3. At the joint, special-purpose fork ears, screw rods or threaded nuts 8 are used; the connection node-9 of the upper chord beam and the left and right half-spans of the arch 1 in the mid-span ...

Embodiment 2

[0027] The combined structure system of cables, variable cross-section beams and arches of the present invention mainly includes a double upper chord beam and arch 1 made of glued wood, a stay cable 2 made of stainless steel tie rods, and a stainless steel tube strut-3. The bottom surface of the upper string beam and arch 1 is double-folded, the top surface is arc-shaped, and the top surface of the entire system is a circular arc surface. There is a circular reserved hole 7 at the end of the upper string beam and arch 1 for placing pulleys. Anchor 5 for cable 2 and supporting anchor plate or anchor connector; a cable 2 is arranged in the gap between the double-split beams; special fork ears, screws or threaded nuts are used for the connection between cable 2 and strut-3 8; the connection node-9 of the upper string beam and the left and right half-spans of the arch 1 in the mid-span part is hinged.

Embodiment 3

[0029] The combined structure system of cables, variable cross-section beams and arches of the present invention mainly includes a single upper chord beam and arch 1 made of glued wood, 2 stay cables 2 made of stainless steel tie rods, and a set of stainless steel tube braces 2 4 . The bottom surface of the upper string beam and arch 1 is stepped, the top surface is linear, and the top surface of the entire system is a double-slope surface. There are two circular reserved holes 7 at the end of the upper string beam and arch 1, which are used to place the cables 2 The anchor 5 and the matching anchor plate or anchor connector; the upper chord beam and the arch 1 are provided with 2 grooves 12 on the bottom surface, and 1 cable 2 is respectively arranged in the 2 grooves 12; the cable 2 and the strut Two 4 joints, adopt special-purpose fork lug, screw rod or threaded nut 8; The left and right two half-spans of upper chord beam, arch 1 are hinged at the connection node 2 10 of the...

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Abstract

The invention discloses a cable and variable-section beam-arch composite structure system which comprises inhaul cables, a support rod and a variable-section upper chord beam-arch. The upper chord beam-arch comprises a single beam, a coupled beam or a multi-joggle beam, the inhaul cables are connected with the midspan of the upper chord beam-arch through the support rod, two ends of each inhaul cable are anchored at two ends of the upper chord beam-arch respectively through anchorage devices, the inhaul cables are arranged in reserved ducts and grooves of the upper chord beam-arch or gaps between the coupled beam-arch and the multi-joggle beam-arch within the range of 1 / 5-2 / 5 of the span away from supports, and the other parts of the inhaul cables are exposed. The inhaul cables can be linearly arranged along the bottom surface of the variable-section beam-arch and are only exposed in parts of the midspan range, so that attractiveness of buildings and mechanics is reflected. In addition, the composite cross section of the cable and the variable-section beam-arch is flexible and can be a single beam section, a coupled beam section or a multi-joggle beam section, and flexible arrangement of the inhaul cables is greatly facilitated.

Description

technical field [0001] The invention relates to a combined structure system of cables, variable cross-section beams and arches, which is mainly (but not exclusively) used in the fields of building structures, roofs, bridge superstructures and the like. Background technique [0002] As a planar self-balancing system formed by connecting beams or arches with high-strength cables through struts, the cable-beam-arch composite structure system not only gives full play to the advantages of arch structures, but also makes full use of the high tensile strength of cables Rods provide elastic supports for arches, improve the ability of arches to bear vertical loads, and are widely used. This structural system has the advantages of simple system, clear force, various structural forms, combination of rigidity and flexibility, and strong adaptability. [0003] The upper chord beams and arches in the traditional cable, beam and arch composite structure system are generally fixed-length c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/00E04B1/342E01D19/00
Inventor 杨会峰刘伟庆陆伟东孙小鸾
Owner NANJING UNIV OF TECH