Special large-span anti-overturning steel truss for long-distance-transportation and low-energy-consumption heat-supply network

Abstract

The invention discloses a large-span anti-overturning steel truss specially used for long-distance low-energy heating networks, which includes two groups of bored cast-in-place piles located below the ground, and each group of bored cast-in-place piles supports a support on the ground through a cap. Two upper chords located on the upper floor and lower chords respectively corresponding to the lower layer of the two upper chords are installed between the two groups of brackets. The brackets include vertically arranged inner longitudinal struts and outer longitudinal struts. The outer longitudinal struts are connected by several supporting beams. Both ends of the upper chord are provided with upper chord pickouts longer than the lower chord, and the upper chord pickouts at both ends of the upper chord are inserted into the brackets on both sides. On the inner longitudinal support rod, and fixed by the limit block on the top of the bracket; the anti-overturning ability of the present invention is greatly improved, and the lateral force and lateral overturning moment that can be endured are greatly increased.

Description

technical field [0001] The invention belongs to the technical field of steel trusses, in particular to a large-span anti-overturning steel truss specially used for long-distance low-energy heating networks. Background technique [0002] The structural calculation of the steel truss mainly involves the following aspects: 1. The internal force design of the supports at both ends and the foundation; 2. The internal force calculation of each member of the truss itself; 3. The deflection and displacement calculation of the truss; 4. The anti-overturning calculation of the truss; 5. , Anti-seismic anti-drop beam design. [0003] The design of the first three aspects is calculated based on the actual structural layout and current national, local and industry norms. [0004] Regarding the fourth aspect of "truss anti-overturning calculation", the current method usually adopted is to strengthen the bottom support to achieve the ability to resist overturning moment. However, when th...

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Problems solved by technology

[0007] However, in view of the current limitations and deficiencies of the truss in the design of anti-overturning and anti-fall beams, in order to meet the increasing engineering needs, on the one hand, the span of the truss needs to be made larger and larger; Closed structures such as billboards, within the current relevant national, local and industry regulations, make necessary improvements to the truss structure, and specifically propose this patent

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