本文關(guān)鍵詞：單調(diào)與低周反復(fù)荷載作用下膠合木梁柱延性抗彎節(jié)點(diǎn)試驗(yàn)研究　出處：《建筑結(jié)構(gòu)學(xué)報(bào)》2015年10期 　論文類型：期刊論文

  更多相關(guān)文章： 膠合木 梁柱節(jié)點(diǎn) 單調(diào)加載試驗(yàn) 低周反復(fù)加載試驗(yàn) 延性 抗震性能

【摘要】：為研究帶耗能連接件的混合式植筋膠合木梁柱節(jié)點(diǎn)的抗震性能,對(duì)9組16個(gè)膠合木梁柱植筋節(jié)點(diǎn)試件進(jìn)行單調(diào)與低周反復(fù)荷載試驗(yàn)研究。對(duì)混合式植筋節(jié)點(diǎn)的破壞形態(tài)、試驗(yàn)現(xiàn)象、受力性能、延性和耗能能力等進(jìn)行分析,并將其與純植筋節(jié)點(diǎn)進(jìn)行對(duì)比。結(jié)果表明:混合式植筋節(jié)點(diǎn)與純植筋節(jié)點(diǎn)承載力相差不大,彈性抗側(cè)剛度相對(duì)稍低,但剛度退化要比純植筋節(jié)點(diǎn)小;混合式植筋節(jié)點(diǎn)位移延性系數(shù)達(dá)到2.2~5.1,延性性能較好;與純植筋節(jié)點(diǎn)相比,混合式植筋節(jié)點(diǎn)滯回環(huán)的捏攏效應(yīng)相對(duì)較輕,且其殘余變形顯著減小,說(shuō)明帶耗能連接件的植筋節(jié)點(diǎn)具有較好的耗能能力和變形恢復(fù)特性。對(duì)比純植筋節(jié)點(diǎn),引入耗能連接件后,混合式植筋節(jié)點(diǎn)受力及抗震性能變化不大,但其承載力與剛度維持在較高水平且可控制。帶整體式耗能連接件的J2、J3組試件的耗能能力和變形恢復(fù)能力較強(qiáng),而帶分離式耗能連接件J4組試件的耗能能力與變形恢復(fù)能力相對(duì)差些。
[Abstract]:In order to study the seismic behavior of Liang Zhu joint of hybrid glued wood with energy-dissipation connectors. The monotonic and low cycle repeated loading tests were carried out on 16 groups of 16 glued wood joints with Liang Zhu tendons. The failure patterns, experimental phenomena, mechanical properties, ductility and energy dissipation capacity of hybrid tendon-planting joints were analyzed. The results show that the bearing capacity of the hybrid joint is not different from that of the pure node, and the stiffness of the elastic side is relatively low, but the stiffness degradation is smaller than that of the pure joint. The displacement ductility coefficient of hybrid reinforcement joint reaches 2.2% 5.1, and its ductility is better. Compared with pure reinforced joints, the clamping effect of hysteretic loop of hybrid tendon-planting joints is relatively light, and its residual deformation is significantly reduced. The results show that the joints with energy-dissipation connectors have better energy dissipation capacity and deformation-recovery characteristics. Compared with pure tendons joints, the load and seismic performance of hybrid tendons joints have little change after the introduction of energy-dissipation connectors. However, its bearing capacity and stiffness are maintained at a high level and can be controlled. The energy dissipation capacity and deformation recovery ability of J2N J3 specimens with integral energy dissipation connectors are relatively strong. But the energy dissipation ability and deformation recovery ability of J4 sample with separate energy dissipation connection are relatively poor.
【作者單位】： 南京工業(yè)大學(xué)土木工程學(xué)院;東南大學(xué)土木工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51108233)
【分類號(hào)】：TU366.3
【正文快照】： 0引言木結(jié)構(gòu)節(jié)點(diǎn)類型主要包括傳統(tǒng)榫卯連接、齒連接、膠黏連接、釘連接、銷栓連接和齒板連接等,其中銷栓節(jié)點(diǎn)由于具有加工安裝方便、性能可靠、經(jīng)濟(jì)性好等優(yōu)點(diǎn)而得到普遍應(yīng)用。然而,隨著現(xiàn)代工程木結(jié)構(gòu)的發(fā)展,對(duì)節(jié)點(diǎn)性能和抗震性能的要求越來(lái)越高,傳統(tǒng)的銷栓節(jié)點(diǎn)形式雖然延性

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