Method for increasing wall connecting piece and improving and determining bearing capacity of support frame

Abstract

The invention relates to a method for increasing horizontal restraint and improving and determining bearing capacity of a support frame. The support frame is loaded in a 5-span * 5-span range in a mode of longitudinal 8 spans and transverse 6 spans; the support frame is loaded in a mode of 2 spans on one longitudinal side and 1 span on the other side outside the loading area; the support frame is loaded in a mode of 1 span on one transverse side outside the loading area; the height of the frame is 8.2 meters, the step pitch of upright rods is 1.24 meters, the longitudinal distance between the upright rods is 0.9 meter, the transverse distance between the upright rods is 0.9 meter, the height-width ratio of a bracket is 1.5, and the support frame is erected by using phi48*3.2 steel pipes; and adjustable bracket jacking phi48*3.2 double steel pipes are used as supporting load main beams on the upper part of the bracket, the distance between the upper surface of an adjustable bracket and the top transverse pipe of the bracket is 0.55 meter, the adjustable bracket extends out of the upright rods for 0.3 meter, a horizontal restraint rod is arranged on a reaction frame at the height of 5.3 meters, the distance between the horizontal restraint rod and the nearest upright rod is 12 to 15 centimeters, and the critical load loaded to the support frame is 24kN. By the method, the fastener support frame has economic and reasonable structure, and is safe and practical.

Description

technical field [0001] The invention relates to a method for increasing and determining the bearing capacity of a support frame by adding rigid wall parts. The support frame used on construction sites, especially the fastener type steel pipe support frame, can effectively improve the bearing capacity by adding horizontal constraints such as wall rods. Background technique [0002] At present, the support frame used on the construction site is relatively free to set up the wall parts (the components that connect the support frame body with the main structure of the building and can transmit tension and pressure). Some do not set it, and the critical load increase value cannot be determined if it is set , There is no corresponding relationship between the erection structure and the critical load after adding wall parts. On-site erection is based on experience. On the one hand, it will cause waste of materials and increase the cost. On the other hand, it will cause potential saf...

AI Technical Summary

Problems solved by technology

[0002] At present, the support frame used on the construction site is relatively free to set up the wall parts (the components that connect the support frame body with the main structure of the building and can transmit tension and pressure). Some do not set it, and the critical load increase value cannot be determined if it is set , there is no corresponding relationship between the erection structure and the critical load after adding the wall parts, and the on-site erection is based on experience. On the one hand, it will cause waste of materials and increase the cost. On the other hand, it will cause potential safety hazards, and some even cause major safety accidents

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