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水平加腋鋼筋混凝土梁—型鋼混凝土柱節(jié)點的應用與受力性能分析

發(fā)布時間:2018-05-29 11:32

  本文選題:水平加腋 + 鋼筋混凝土梁; 參考:《蘇州科技學院》2015年碩士論文


【摘要】:全國各地都在大量興建高層、超高層建筑,型鋼混凝土組合結構形式因承載力、剛度、截面尺寸、抗震性能、施工便利性等方面占有優(yōu)勢而應用逐漸普遍,其中,鋼筋混凝土梁-型鋼混凝土柱結構形式的應用較多。目前,鋼筋混凝土梁-型鋼混凝土柱節(jié)點構造形式,主要分為梁縱筋貫通節(jié)點、梁部分縱筋與鋼牛腿焊接節(jié)點、梁部分縱筋與短鋼梁搭接節(jié)點、梁部分縱筋與套筒機械連接節(jié)點等。本文從施工角度出發(fā),提出通過梁水平加腋使得梁所有縱筋從柱型鋼翼緣邊通過或穿過柱型鋼腹板的鋼筋混凝土梁-型鋼混凝土柱構造節(jié)點做法。采用這種梁端水平加腋方式,節(jié)點構造簡單、傳力明確,可避免鋼牛腿構造形式導致結構構件截面承載力和剛度突變的問題,有利于柱內型鋼生產、加工與運輸,方便型鋼吊運和其他物資的吊運,對減少施工工序、提高施工質量和加快施工進度有利。對現行不同規(guī)范給出的梁柱節(jié)點承載力計算公式分析,在不改變型鋼混凝土框架柱、鋼筋混凝土框架梁截面尺寸、配筋、配鋼的情況下,梁端水平加腋不影響或可提高鋼筋混凝土梁-型鋼混凝土柱節(jié)點承載力。ABAQUS有限元分析對比結果也表明,梁端水平加腋形式的鋼筋混凝土梁-型鋼混凝土柱構造節(jié)點的剛度、變形能力要優(yōu)于焊接鋼牛腿構造形式梁柱節(jié)點。本文還對鋼筋混凝土梁-型鋼混凝土柱節(jié)點設計提出建議,提供了共58個梁柱節(jié)點設計圖,并對節(jié)點施工中型鋼加工安裝、鋼筋加工安裝及連接、模板安裝、混凝土澆筑等施工過程提出了建議,可以給工程應用提供參考。
[Abstract]:Throughout the country, a large number of high-rise buildings, super-high-rise buildings and steel reinforced concrete composite structures have been widely used because of their advantages in bearing capacity, stiffness, cross-section size, seismic performance, construction convenience and so on. Reinforced concrete beam-steel reinforced concrete column structure is widely used. At present, the structural forms of reinforced concrete beam-steel reinforced concrete column joints are mainly divided into beam longitudinal reinforcement connection, beam longitudinal reinforcement and steel corbel welded joint, beam longitudinal reinforcement and short steel beam overlap joint. Part of the beam longitudinal reinforcement and sleeve mechanical connection joints and so on. In this paper, from the point of view of construction, a method of constructing joints of reinforced concrete beam-steel reinforced concrete columns with all longitudinal bars passing through or through column steel webs by means of horizontal beam and axil is put forward. With this beam end horizontal axillary mode, the joint structure is simple and the force transfer is clear, which can avoid the problem of sudden change in the bearing capacity and stiffness of the structural members caused by the steel corbel structure, which is conducive to the production, processing and transportation of the steel in the column. Convenient lifting of steel and other materials is beneficial to reduce construction process, improve construction quality and speed up construction progress. The calculation formula of bearing capacity of Liang Zhu joints given in different codes is analyzed. Without changing the section size of steel reinforced concrete frame column, reinforced concrete frame beam, reinforcement, and steel distribution, The results of finite element analysis on the bearing capacity of reinforced concrete beam-steel reinforced concrete column joints. Abaqus results also show that the stiffness of reinforced concrete beam-steel reinforced concrete column joints with horizontal and axillary beam end is not affected or can be improved. The deformability is superior to the welded steel corbel structure Liang Zhu joint. The paper also puts forward some suggestions for the design of reinforced concrete beam-steel reinforced concrete column joints, and provides 58 design drawings of Liang Zhu joints. It also provides the installation and installation of section steel, the installation and connection of steel bars, and the installation of formwork during the construction of joints. Some suggestions are put forward in the construction process of concrete pouring, which can provide reference for engineering application.
【學位授予單位】:蘇州科技學院
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:TU398.9

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