發(fā)布時間：2018-05-23 18:50

  本文選題：新型全螺栓連接 + 抗震性能��； 參考：《石河子大學》2017年碩士論文

【摘要】：我國屬于地震多發(fā)的國家,鋼結構由于其較好的抗震性能和自重輕、施工周期短、投資回收快、環(huán)境污染少等優(yōu)點越來越受到大眾的廣泛關注。方鋼管柱與焊接組合H形鋼梁作為鋼框架結構的承載構件在其中的作用不言而喻。梁柱連接節(jié)點是鋼框架的重要部件,在整個結構中起了至關重大的作用。此外,不同的連接形式對結構的抗震性能也有很大影響,其連接形式的優(yōu)劣直接關系到結構的承載力和抗震性能的好壞。故針對方鋼管柱與焊接組合H形鋼梁連接中方鋼管四周封閉不能簡單通過高強螺栓普通連接、現(xiàn)行的全焊接連接方式因焊接質(zhì)量參差不齊而導致節(jié)點連接承載力和抗震性能降低等問題,提出了方鋼管柱與H形鋼梁采用新型全螺栓的連接方式,螺栓不再需要螺帽,直接在連接鋼板上攻出絲扣,有絲扣的鋼板起到螺帽的作用,一步到位進行梁柱連接;本文針對采用所提出的新型節(jié)點連接方式所連接的節(jié)點,通過對其承載力、抗震性能和破壞形態(tài)等進行分析研究,得出各柱壁、端板組合下節(jié)點之間的內(nèi)在聯(lián)系,并得出最優(yōu)柱壁端板組合。其主要內(nèi)容及相關結論如下:(1)采用試驗與理論推導相結合的方法,運用彈性力學的相關知識對螺栓充當集中力作用下彈性薄板相應點的撓曲變化進行研究,并針對試驗模型推導出了方鋼管管壁與貼板焊接薄板上對應點的撓度近似值公式。通過該公式并代入尺寸參數(shù)可以得出螺桿處單根螺栓拉力值與該螺栓點處的撓曲值的相應關系。(2)為了研究方鋼管柱與焊接組合H形鋼梁的新型全螺栓連接節(jié)點在柱壁厚度、端板厚度、材料型號等參數(shù)變化下的抗震性能,并找出其相應的破壞形態(tài),試驗設計了六組截面尺寸為200mm×200 mm的十字形組合節(jié)點試件。通過對其進行低周反復加載試驗,獲得了相應節(jié)點對應的滯回曲線、骨架曲線等試驗數(shù)據(jù)和破壞現(xiàn)象,通過分析其抗震性能和破壞形態(tài)得出了最優(yōu)柱壁、端板厚度組合。試驗結果表明:截面尺寸為200 mm×200 mm的方鋼管柱-H形鋼梁組合節(jié)點在合理的柱壁、端板厚度范圍內(nèi),柱壁厚度相同,端板厚度相對較薄的節(jié)點極限承載力高,延性較好;而且在此方鋼管柱的截面尺寸下,柱壁、端板厚度組合為20 mm×16 mm時,節(jié)點的抗震性能最優(yōu)。(3)為了研究不同截面尺寸下新型連接節(jié)點破壞形態(tài)的異同及其抗震性能的變化,試驗新增了5組截面尺寸為300 mm×300 mm的方鋼管梁柱連接節(jié)點,分別對其抗震性能進行研究,并與截面尺寸均為200 mm×200 mm方鋼管梁柱連接節(jié)點進行對比分析。試驗結果表明:截面尺寸為200 mm×200 mm的方鋼管滯回性能較優(yōu)的柱壁端板組合為柱壁厚20 mm,端板厚16 mm。而隨著截面尺寸增大,所對應的最優(yōu)柱壁端板組合的厚度也會相應增大。當柱壁、端板厚度組合由20 mm、16 mm組合而成時,截面尺寸越大,耗能能力越強;而當柱壁、端板厚度超出20mm時,柱壁端板厚度過大,截面尺寸越大,耗能能力反而下降。
[Abstract]:China is a country with many earthquakes. The steel structure has attracted more and more attention because of its good seismic performance and light weight, short construction period, quick investment recovery and less environmental pollution. The role of square steel pipe column and welded composite H shaped steel beam as the bearing member of steel frame structure is self-evident. Point is an important part of the steel frame, which plays a vital role in the whole structure. In addition, the different connection forms have a great influence on the seismic performance of the structure. The connection form is directly related to the bearing capacity and the seismic performance of the structure. Therefore, the steel pipe column of the other side of the steel tube and the welded combination H steel beam are connected to the Chinese steel tube four. The circular sealing can not be simply connected by the high strength bolt. The current full welding connection is caused by the uneven welding quality, which leads to the reduction of the joint bearing capacity and the decrease of the seismic performance. A new full bolt connection method is proposed for the square steel tube column and the H shaped steel beam. The bolt no longer needs the screw cap, and the wire is directly attacked out of the steel plate. Buckle, the steel plate with the buckle plays the role of the nut, and carries on the beam column connection in one step. In this paper, the joints connected by the new type of joint connection are analyzed and studied through the analysis of its bearing capacity, the seismic performance and the failure form, and the inner connection between the column walls and the end plates is obtained, and the optimal column wall is obtained. The main contents and the related conclusions are as follows: (1) using the method of combining the experimental and theoretical deduction, the deflection of the corresponding points of the elastic thin plate under the action of the bolt is studied by using the relevant knowledge of elastic mechanics, and the corresponding points on the welded thin plate of the square tube wall and the attached plate are deduced. The formula of deflection approximate value. Through this formula and replacing the size parameter, the corresponding relationship between the tension value of single bolt at the screw and the deflection value at the bolt point can be obtained. (2) in order to study the aseismic behavior of the new type of all bolt connection joints of the square steel pipe column and the welded combination H shaped steel beam with the thickness of the column wall, the thickness of the end plate, the material model and so on. Six groups of cross section specimens with cross section size of 200mm x 200 mm are designed. The test data of the corresponding hysteresis curves, skeleton curves and other experimental data and damage phenomena corresponding to the corresponding nodes are obtained by the test of the cross section of the cross section of the cross section. The results are obtained by analyzing its seismic performance and failure form. The optimum column wall and end plate thickness combination. The test results show that the composite joint of square steel tube column with 200 mm x 200 mm section is in reasonable column wall, the thickness of end plate, the thickness of the column wall is the same, the thickness of the end plate is relatively thin, and the ultimate bearing capacity is higher and the ductility is better. Moreover, under the cross section size, column wall and end plate of the square steel pipe column. When the thickness combination is 20 mm x 16 mm, the seismic performance of the joint is the best. (3) in order to study the differences and similarities and the changes in the seismic performance of the new connection joints under different cross section sizes, 5 groups of square steel tube beam column connections with the size of 300 mm x 300 mm are added in the experiment. The beam column connection joints of 200 mm x 200 mm square steel pipe are compared and analyzed. The test results show that the column wall thickness of column wall is 20 mm and the end plate thickness is 16 mm., with the cross section size of 200 mm x 200 mm, and the thickness of the end plate of the best column wall corresponding to the column wall will increase accordingly. When the end plate thickness combination is composed of 20 mm and 16 mm, the larger the section size, the stronger the energy dissipation, and when the column wall, the end plate thickness exceeds the 20mm, the thickness of the end plate of the column wall is too large, the larger the section size is, the energy dissipation capacity decreases.
【學位授予單位】：石河子大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU391;TU352.11

【參考文獻】

相關期刊論文 前10條

1 焦健;何明勝;王京;賀澤鋒;;方形鋼管柱與H形鋼梁全螺栓連接抗震性能試驗研究[J];建筑鋼結構進展;2016年02期

2 韓慶華;劉銘R，

本文編號：1925910