四邊不出筋墻板節(jié)點(diǎn)滯回性能研究
發(fā)布時(shí)間：2018-08-05 12:55
【摘要】：為保證抗震性能,傳統(tǒng)方法將預(yù)制板底受力鋼筋端部伸入疊合樓板與剪力墻或梁連接節(jié)點(diǎn)內(nèi)部,該方法存在運(yùn)輸與施工不便等缺點(diǎn)。為此標(biāo)準(zhǔn)圖集中給出了新型四邊不出筋板的連接節(jié)點(diǎn)構(gòu)造,四邊不出筋板不需在模板上預(yù)留孔洞,降低了加工難度,解決了預(yù)制板底鋼筋在運(yùn)輸和堆放過程中易彎折和銹蝕的難題。研究、推廣疊合板底板四邊不出筋節(jié)點(diǎn),符合可持續(xù)發(fā)展原則。為了推廣新型不出筋疊合板在抗震地區(qū)的應(yīng)用,需要對(duì)其抗震性能進(jìn)行研究。本文設(shè)計(jì)制作了6組不出筋板墻板節(jié)點(diǎn)、1組出筋板節(jié)點(diǎn)及1組現(xiàn)澆墻板節(jié)點(diǎn),并對(duì)各組墻板節(jié)點(diǎn)進(jìn)行低周往復(fù)加載試驗(yàn),通過各組墻板節(jié)點(diǎn)耗能能力、延性等抗震性能指標(biāo)進(jìn)行對(duì)比分析,對(duì)新型不出筋板墻板節(jié)點(diǎn)的抗震性能進(jìn)行了探究和評(píng)價(jià),主要包括以下幾部分內(nèi)容:1.附加筋長(zhǎng)度對(duì)不出筋墻板節(jié)點(diǎn)的抗震性能的影響研究設(shè)置長(zhǎng)附加筋板節(jié)點(diǎn)和常規(guī)附加筋板節(jié)點(diǎn)對(duì)照組及開槽長(zhǎng)附加筋板節(jié)點(diǎn)和開槽短附加筋板節(jié)點(diǎn)對(duì)照組,其中長(zhǎng)附加筋較常規(guī)附加筋板伸入節(jié)點(diǎn)區(qū)域長(zhǎng)度更長(zhǎng),長(zhǎng)附加筋較短附加筋伸入節(jié)點(diǎn)長(zhǎng)度及留置疊合板長(zhǎng)度均更長(zhǎng)。對(duì)四組墻板節(jié)點(diǎn)的滯回性能進(jìn)行比較與分析,探究附加筋長(zhǎng)度對(duì)節(jié)點(diǎn)抗震性能的影響。試驗(yàn)結(jié)果表明,附加筋伸入節(jié)點(diǎn)長(zhǎng)度越長(zhǎng),節(jié)點(diǎn)抗震性能越好。2.附加筋布置方式對(duì)不出筋板節(jié)點(diǎn)抗震性能的影響研究設(shè)置開槽長(zhǎng)附加筋板、長(zhǎng)附加筋板墻板節(jié)點(diǎn)及開槽短附加筋板、短附加筋板墻板節(jié)點(diǎn)對(duì)照組。對(duì)四組墻板節(jié)點(diǎn)的滯回性能進(jìn)行比較與分析,探究附加筋布置方式對(duì)節(jié)點(diǎn)抗震性能的影響。試驗(yàn)結(jié)果表明:開槽布置能顯著提高長(zhǎng)附加筋板節(jié)點(diǎn)的承載力、耗能能力及延性。3.不出筋板、出筋板及現(xiàn)澆板墻板節(jié)點(diǎn)的抗震性能對(duì)比研究在前期對(duì)比研究基礎(chǔ)之上,將開槽長(zhǎng)附加筋板墻板節(jié)點(diǎn)與無附加筋不出筋板、出筋板以及現(xiàn)澆墻板節(jié)點(diǎn)的滯回性能進(jìn)行對(duì)比分析,給出新型不出筋板墻板節(jié)點(diǎn)抗震性能的客觀評(píng)價(jià)。實(shí)驗(yàn)結(jié)果表明:開槽長(zhǎng)附加筋板節(jié)點(diǎn)耗能能力較強(qiáng),承載力較高且變形能力最強(qiáng),延性較好,抗震性能最優(yōu),明顯優(yōu)于出筋板節(jié)點(diǎn),與現(xiàn)澆墻板節(jié)點(diǎn)較為接近。長(zhǎng)附加筋開槽布置不出筋板可實(shí)際代替出筋板節(jié)點(diǎn),且因其制作、運(yùn)輸及存放方便,值得在裝配式混凝土結(jié)構(gòu)中大力推廣。
[Abstract]:In order to ensure seismic performance, the traditional method extends the end of steel bar on the bottom of prefabricated slab into the joint of composite floor slab and shear wall or beam, which has some disadvantages such as inconvenient transportation and construction. For this reason, a new type of joint construction of four edge plate without reinforcement is given in the standard atlas, and no holes need to be reserved in the template, so the processing difficulty is reduced. The problems of bending and rusting in the transportation and stacking process of the steel bar at the bottom of the prefabricated slab are solved. The research and extension of the joint with no reinforcement on the four sides of the composite plate bottom plate are in accordance with the principle of sustainable development. In order to popularize the application of new unstiffened laminated plate in seismic area, the seismic performance of composite plate should be studied. In this paper, six groups of unstiffened plate nodes and 1 group of cast-in-place wall board nodes are designed and manufactured, and the low-cycle reciprocating loading tests are carried out on each group of wall board nodes, and the energy consumption capacity of each group of wall board nodes is obtained. By comparing and analyzing the seismic performance indexes such as ductility and so on, the seismic performance of the new type of unstiffened panel joints is explored and evaluated, including the following parts: 1. The effect of the length of additional reinforcement on the Seismic performance of joints with unstiffened Wall Plate; the control group of joints with long additional reinforcement plate and conventional additional reinforcement plate and the control group of slotted long additional reinforcement plate and slotted short additional stiffened plate node. The length of the long additional reinforcement is longer than that of the conventional additional reinforcement plate, and the length of the long additional reinforcement is longer than that of the short additional reinforcement and the length of the retention superimposed plate. The hysteretic performance of four groups of wall plate joints is compared and analyzed, and the influence of the additional reinforcement length on the seismic performance of the joints is explored. The experimental results show that the longer the joint length is, the better the seismic behavior of the joint is. 2. Study on the effect of the arrangement of additional reinforcement on the Seismic performance of Node without reinforcement the slotted long reinforced plate the long additional stiffened plate wall plate node and the slotted short additional reinforcement plate and the control group of the short additional reinforced plate wall board node are set. The hysteretic performance of four groups of wall plate joints is compared and analyzed, and the effect of additional reinforcement arrangement on seismic performance of joints is explored. The experimental results show that the slotted arrangement can significantly improve the bearing capacity, energy dissipation capacity and ductility of long additional stiffened plate joints. Comparative study on Seismic performance of Nodal joints of unstiffened Plate, reinforced Plate and Cast-in-situ Plate; on the basis of the previous comparative study, the slotted long additional stiffened panel and the unreinforced plate with no additional reinforcement, The hysteretic performance of the joint of the reinforced plate and the cast-in-place wall plate is compared and analyzed, and the objective evaluation of the seismic performance of the new type of unstiffened panel joint is given. The experimental results show that the slotted long additional stiffened plate joints have stronger energy dissipation capacity, higher bearing capacity, stronger deformation capacity, better ductility, and better seismic performance, which are obviously superior to those of the stiffened plate joints and are close to the cast-in-place wall plate joints. The slotted plate with long additional reinforcement can actually replace the joint of the stiffened plate, and because of its convenient manufacture, transportation and storage, it is worth popularizing in the prefabricated concrete structure.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TU352.11
本文編號(hào)：2165857
[Abstract]:In order to ensure seismic performance, the traditional method extends the end of steel bar on the bottom of prefabricated slab into the joint of composite floor slab and shear wall or beam, which has some disadvantages such as inconvenient transportation and construction. For this reason, a new type of joint construction of four edge plate without reinforcement is given in the standard atlas, and no holes need to be reserved in the template, so the processing difficulty is reduced. The problems of bending and rusting in the transportation and stacking process of the steel bar at the bottom of the prefabricated slab are solved. The research and extension of the joint with no reinforcement on the four sides of the composite plate bottom plate are in accordance with the principle of sustainable development. In order to popularize the application of new unstiffened laminated plate in seismic area, the seismic performance of composite plate should be studied. In this paper, six groups of unstiffened plate nodes and 1 group of cast-in-place wall board nodes are designed and manufactured, and the low-cycle reciprocating loading tests are carried out on each group of wall board nodes, and the energy consumption capacity of each group of wall board nodes is obtained. By comparing and analyzing the seismic performance indexes such as ductility and so on, the seismic performance of the new type of unstiffened panel joints is explored and evaluated, including the following parts: 1. The effect of the length of additional reinforcement on the Seismic performance of joints with unstiffened Wall Plate; the control group of joints with long additional reinforcement plate and conventional additional reinforcement plate and the control group of slotted long additional reinforcement plate and slotted short additional stiffened plate node. The length of the long additional reinforcement is longer than that of the conventional additional reinforcement plate, and the length of the long additional reinforcement is longer than that of the short additional reinforcement and the length of the retention superimposed plate. The hysteretic performance of four groups of wall plate joints is compared and analyzed, and the influence of the additional reinforcement length on the seismic performance of the joints is explored. The experimental results show that the longer the joint length is, the better the seismic behavior of the joint is. 2. Study on the effect of the arrangement of additional reinforcement on the Seismic performance of Node without reinforcement the slotted long reinforced plate the long additional stiffened plate wall plate node and the slotted short additional reinforcement plate and the control group of the short additional reinforced plate wall board node are set. The hysteretic performance of four groups of wall plate joints is compared and analyzed, and the effect of additional reinforcement arrangement on seismic performance of joints is explored. The experimental results show that the slotted arrangement can significantly improve the bearing capacity, energy dissipation capacity and ductility of long additional stiffened plate joints. Comparative study on Seismic performance of Nodal joints of unstiffened Plate, reinforced Plate and Cast-in-situ Plate; on the basis of the previous comparative study, the slotted long additional stiffened panel and the unreinforced plate with no additional reinforcement, The hysteretic performance of the joint of the reinforced plate and the cast-in-place wall plate is compared and analyzed, and the objective evaluation of the seismic performance of the new type of unstiffened panel joint is given. The experimental results show that the slotted long additional stiffened plate joints have stronger energy dissipation capacity, higher bearing capacity, stronger deformation capacity, better ductility, and better seismic performance, which are obviously superior to those of the stiffened plate joints and are close to the cast-in-place wall plate joints. The slotted plate with long additional reinforcement can actually replace the joint of the stiffened plate, and because of its convenient manufacture, transportation and storage, it is worth popularizing in the prefabricated concrete structure.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TU352.11
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