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< Page ,Total 19 >
软土地基上既有石结构地震易损性分析
期刊论文 | 2025 , 47 (1) , 173-183 | 工程抗震与加固改造
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Abstract :

福建沿海地区现广泛分布着大量具有地域特色的石结构民宅,由于地理位置和经济条件的限制,部分民宅建造于软弱场地之上.目前建筑结构计算时地基通常采用刚性假定,而软土地基上建筑结构在地震作用下破坏更严重,因此亟需对此类石结构进行安全评估.选取一栋典型两层的软土地基石结构(SSI体系),设定地基土体等效剪切波速为147.57m/s,采用有限元软件LS-DYNA进行基于IDA的地震易损性分析,结果与刚性地基体系(FIX体系)进行对比,对其进行安全评估.结果表明:SSI体系较FIX体系更易于达到极限状态,结构地震易损性增加,概率差值可达40%~46%;基于易损性得出结构性能裕度比进行分析,SSI体系较FIX体系各极限状态下的性能裕度比均降低.研究揭示了坐落于软弱场地上的石结构较刚性地基体系破坏更为严重,成果为石结构的抗震加固提供依据.

Keyword :

地震易损性 地震易损性 增量动力分析 增量动力分析 石结构 石结构 软土地基 软土地基

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GB/T 7714 林环周 , 翁志英 , 张静 et al. 软土地基上既有石结构地震易损性分析 [J]. | 工程抗震与加固改造 , 2025 , 47 (1) : 173-183 .
MLA 林环周 et al. "软土地基上既有石结构地震易损性分析" . | 工程抗震与加固改造 47 . 1 (2025) : 173-183 .
APA 林环周 , 翁志英 , 张静 , 何佰昭 , 吴应雄 , 林文佳 . 软土地基上既有石结构地震易损性分析 . | 工程抗震与加固改造 , 2025 , 47 (1) , 173-183 .
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考虑材料组分影响因素的HP-FRCC流动性能及力学性能
期刊论文 | 2024 , 22 (5) , 125-133 | 水利与建筑工程学报
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Abstract :

为制备适用于砖墙体面层加固的水泥基复合材料,降低其成本同时保证其力学性能,采用一种高性能纤维增强水泥基复合材料(HP-FRCC)用于砖墙体面加固,进而对HP-FRCC的流动度和力学强度进行研究分析,采用跳桌测试法及抗压抗拉测试,分析不同水胶比、减水剂、石灰石粉、聚甲醛POM纤维掺量制备的HP-FRCC的流动性能和力学性能.结果表明:增大水胶比以及石灰石粉掺量能够改善流动性能,而纤维掺量的增大会导致流动度的降低.当POM纤维掺量为2.5%,石灰石粉掺量为35%~40%时,HP-FRCC力学性能最优,而随着水胶比的提高,力学性能下降,拉伸延性呈现先增后降的趋势.POM纤维与HP-FRCC基体之间存在较强的粘结力,纤维的存在促进抗拉强度以及延性的提高.减水剂掺量为2.0%时强度、拉伸延性最小但流动性能最佳.

Keyword :

力学性能 力学性能 流动性能 流动性能 纤维增强水泥基复合材料 纤维增强水泥基复合材料 配合比 配合比

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GB/T 7714 翁志英 , 胡海楠 , 耿丽 et al. 考虑材料组分影响因素的HP-FRCC流动性能及力学性能 [J]. | 水利与建筑工程学报 , 2024 , 22 (5) : 125-133 .
MLA 翁志英 et al. "考虑材料组分影响因素的HP-FRCC流动性能及力学性能" . | 水利与建筑工程学报 22 . 5 (2024) : 125-133 .
APA 翁志英 , 胡海楠 , 耿丽 , 曹悫 , 吴应雄 . 考虑材料组分影响因素的HP-FRCC流动性能及力学性能 . | 水利与建筑工程学报 , 2024 , 22 (5) , 125-133 .
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Torsion effect and control of foundation seismic isolation structure of plane irregular multi-layer frame structure; [平 面 不 规 则 多 层 框 架 基 础 隔 震 结 构扭 转 效 应 及 其 控 制] Scopus
期刊论文 | 2024 , 37 (12) , 2021-2033 | Journal of Vibration Engineering
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Plane irregular buildings are prone to torsion and cause serious damage to the structure. The analysis and control of structural torsion effect is the key to this kind of structural design. In this regard, the simulation calculation of the planar irregular multistory frame model in the 8-degree fortification zone was carried out, and the planar L-type four-story frame isolation model of five typical class B buildings was established. The ratios of the length B and width W of the protruding limbs of the structure were set to be 1:1, 1.5:1, 2:1, 2.5:1 and 3:1, respectively. The dynamic characteristics and seismic response of different structures were analyzed. The influence of the LRB stiffness ratio and the rigid center position of the isolation layer on the structural torsion was discussed, and the effective control method of structural torsion was proposed. The results show that with the increase of the length-width ratio B/W of the protruding limb, the X-direction torsion of the structure increases gradually, and the Y-direction torsion decreases gradually. Increasing the proportion of LRB stiffness can reduce the torsional effect of the structure. By comprehensively controlling the structural torsion and structural damping coefficient, a reasonable proportion of LRB stiffness can be obtained. The proportion of LRB stiffness of the isolation layer under the condition of 8 degrees earthquake is proposed. At the same time, the rigid center of the isolation layer and the rigid center of the superstructure are arranged on both sides of the mass center of the superstructure to suppress the torsion of the superstructure of the plane irregular structure. © 2024 Nanjing University of Aeronautics an Astronautics. All rights reserved.

Keyword :

base seismic isolation base seismic isolation irregular plane irregular plane reinforced concrete frame structure reinforced concrete frame structure simulation calculations simulation calculations torsional control torsional control

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GB/T 7714 Pan, Q.-F. , Lin, H.-Z. , Xu, L.-Y. et al. Torsion effect and control of foundation seismic isolation structure of plane irregular multi-layer frame structure; [平 面 不 规 则 多 层 框 架 基 础 隔 震 结 构扭 转 效 应 及 其 控 制] [J]. | Journal of Vibration Engineering , 2024 , 37 (12) : 2021-2033 .
MLA Pan, Q.-F. et al. "Torsion effect and control of foundation seismic isolation structure of plane irregular multi-layer frame structure; [平 面 不 规 则 多 层 框 架 基 础 隔 震 结 构扭 转 效 应 及 其 控 制]" . | Journal of Vibration Engineering 37 . 12 (2024) : 2021-2033 .
APA Pan, Q.-F. , Lin, H.-Z. , Xu, L.-Y. , Lu, L.-X. , Wu, Y.-X. , Cao, L.-K. . Torsion effect and control of foundation seismic isolation structure of plane irregular multi-layer frame structure; [平 面 不 规 则 多 层 框 架 基 础 隔 震 结 构扭 转 效 应 及 其 控 制] . | Journal of Vibration Engineering , 2024 , 37 (12) , 2021-2033 .
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UHPC石墙嵌缝加固的福建典型石结构抗震性能模拟与分析 CSCD PKU
期刊论文 | 2024 , 32 (03) , 824-838 | 应用基础与工程科学学报
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福建沿海地区石结构民宅保有量大,石结构抗震性能较差.石墙是石结构主要的承重及抗侧力构件,超高性能混凝土(UHPC)嵌缝加固石墙可提高石结构的抗震性能.为探究石墙经过UHPC嵌缝加固后石结构的整体抗震性能,采用LS-DYNA有限元软件分别建立了未加固石墙和UHPC嵌缝加固石墙的两种石结构模型,研究石结构地震破坏全过程,分析结构地震响应、破坏机制和抗震性能.研究结果表明:石结构在地震作用下呈现“竖向倒塌”的破坏模式.在PGA为55gal和110gal的工况下,未加固结构的损伤状态为轻微破坏和整体坍塌;加固后结构的损伤状态分别为基本完好和中等破坏.相比未加固结构,加固后的石结构基本周期略有降低,楼面峰值加速度降低了21.05%~25.26%;位移角减小了74.90%~94.50%,加固后石墙开裂得到有效抑制,结构损伤程度有所减小,加固效果明显.

Keyword :

LS-DYNA LS-DYNA UHPC UHPC 嵌缝加固 嵌缝加固 抗震加固 抗震加固 有限元模拟 有限元模拟 石墙 石墙 石结构 石结构

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GB/T 7714 施微丹 , 施建日 , 林环周 et al. UHPC石墙嵌缝加固的福建典型石结构抗震性能模拟与分析 [J]. | 应用基础与工程科学学报 , 2024 , 32 (03) : 824-838 .
MLA 施微丹 et al. "UHPC石墙嵌缝加固的福建典型石结构抗震性能模拟与分析" . | 应用基础与工程科学学报 32 . 03 (2024) : 824-838 .
APA 施微丹 , 施建日 , 林环周 , 耿丽 , 林婷婷 , 吴应雄 et al. UHPC石墙嵌缝加固的福建典型石结构抗震性能模拟与分析 . | 应用基础与工程科学学报 , 2024 , 32 (03) , 824-838 .
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中空夹层钢管钢渣混凝土T形节点抗震性能研究 CSCD PKU
期刊论文 | 2024 , 37 (06) , 1023-1032 | 振动工程学报
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Abstract :

将钢渣混凝土灌入中空夹层钢管混凝土结构,充分利用钢渣混凝土的微膨胀性和中空夹层内外钢管对混凝土的约束作用,有效解决了钢渣混凝土工程应用中的安定性问题。以混凝土类型、空心率、支主管直径比和轴压比为参数变量,共进行了5个中空夹层钢管混凝土T形节点试件(1个普通混凝土试件、4个钢渣混凝土试件)拟静力试验研究。试验结果表明:与灌注普通混凝土相比,灌注钢渣混凝土对试件节点承载力影响不大,但位移延性和耗能能力明显增加,提高幅度分别达69.46%和48.20%;当空心率从0.3增大到0.5时,试件位移延性系数提高9.69%;当支主管直径比从0.40增大到0.68时,位移延性系数提高82.44%;当轴压比从0.1增大到0.2时,试件位移延性系数降低17.98%。建立有限元模型对试件的滞回性能进行了模拟,模拟结果与试验结果基本符合,验证了所建有限元模型的有效性。进而开展了节点承载力影响参数分析,得到最佳空心率为70%左右。钢渣在钢管混凝土结构中应用,可大幅提高其抗震性能。

Keyword :

中空夹层钢管混凝土 中空夹层钢管混凝土 抗震性能 抗震性能 拟静力试验 拟静力试验 滞回特性 滞回特性 钢渣混凝土 钢渣混凝土

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GB/T 7714 曾武华 , 王伟 , 陈庆熠 et al. 中空夹层钢管钢渣混凝土T形节点抗震性能研究 [J]. | 振动工程学报 , 2024 , 37 (06) : 1023-1032 .
MLA 曾武华 et al. "中空夹层钢管钢渣混凝土T形节点抗震性能研究" . | 振动工程学报 37 . 06 (2024) : 1023-1032 .
APA 曾武华 , 王伟 , 陈庆熠 , 王军芳 , 吴应雄 , 卓卫东 . 中空夹层钢管钢渣混凝土T形节点抗震性能研究 . | 振动工程学报 , 2024 , 37 (06) , 1023-1032 .
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水平初位移下基础隔震结构现场动力特性测试 CSCD PKU
期刊论文 | 2024 , 37 (04) , 578-587 | 振动工程学报
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应用被动控制技术建成的隔震建筑,其隔震性能缺乏检测手段,因此进行隔震结构动力特性的现场测试具有重要意义。现场测试1栋4层基础隔震幼儿园,展示了试验装置、方法及所得结果,将结果与同条件下非隔震结构模型进行对比分析,探究实际隔震结构动力响应规律及减震效果。用液压千斤顶将建筑物推开使隔震层产生98 mm(对应LNR500剪应变102%)水平初位移,安装混凝土顶杆支撑建筑物;利用炸药将顶杆爆破卸载使建筑物做自由振动;最后测试和分析其动力响应等参数。分析结果表明:水平初位移条件下,隔震结构的一阶自振周期比非隔震结构显著延长,阻尼比增大;隔震层滞回曲线饱满;各楼层动力响应控制效果明显,但观察到屋顶层相比底层加速度略有放大;卸载后隔震层瞬间复位,表明隔震层具有瞬间复位特性。

Keyword :

动力特性 动力特性 基础隔震 基础隔震 复位特性 复位特性 水平初位移 水平初位移 滞回特性 滞回特性

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GB/T 7714 吴应雄 , 董昕珺 , 廖文彬 et al. 水平初位移下基础隔震结构现场动力特性测试 [J]. | 振动工程学报 , 2024 , 37 (04) : 578-587 .
MLA 吴应雄 et al. "水平初位移下基础隔震结构现场动力特性测试" . | 振动工程学报 37 . 04 (2024) : 578-587 .
APA 吴应雄 , 董昕珺 , 廖文彬 , 林友勤 , 唐贞云 , 郑国琛 et al. 水平初位移下基础隔震结构现场动力特性测试 . | 振动工程学报 , 2024 , 37 (04) , 578-587 .
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CFRP板加固既有石楼板抗弯性能试验研究
期刊论文 | 2024 , 41 (12) , 138-149 | 工程力学
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为改善既有石结构中石楼板的抗弯性能,避免其发生脆性断裂,提出了采用CFRP板加固技术对石楼板进行抗弯加固,并对未加固的素石板和CFRP板加固后的石楼板进行受弯试验,对比不同厚度及宽度CFRP板对石板受弯性能的影响.结果表明:利用CFRP板加固石板能够显著改善石楼板的最终破坏形态,破坏形式由素石板的脆性断裂转变为CFRP板加固后石板的弯曲破坏,CFRP板加固石板在破坏前具有一定的变形能力;CFRP板能够显著提升石楼板的抗弯承载能力,CFRP板加固石板的极限荷载较素石板提升了 60.15%~128.59%,且CFRP板的加固效果随着CFRP板的厚度及宽度增大而提高;CFRP板能有效阻碍石楼板板底裂缝的产生,提高了石材的极限拉应变,从而增大石楼板的开裂荷载.受拉区石材的极限拉应变随着CFRP板厚度和宽度的增大,提升了 66.92%~187.48%,CFRP板加固石板的开裂荷载较素石板提升了 13.33%~54.07%;通过理论计算,建立了 CFRP板加固石楼板的受弯承载力计算公式,理论计算结果与试验结果符合较好.

Keyword :

CFRP板 CFRP板 受弯性能 受弯性能 抗弯加固 抗弯加固 石楼板 石楼板 石结构 石结构

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GB/T 7714 张丰宇 , 何佰昭 , 吴应雄 et al. CFRP板加固既有石楼板抗弯性能试验研究 [J]. | 工程力学 , 2024 , 41 (12) : 138-149 .
MLA 张丰宇 et al. "CFRP板加固既有石楼板抗弯性能试验研究" . | 工程力学 41 . 12 (2024) : 138-149 .
APA 张丰宇 , 何佰昭 , 吴应雄 , 金捷 , 陈伟恩 . CFRP板加固既有石楼板抗弯性能试验研究 . | 工程力学 , 2024 , 41 (12) , 138-149 .
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水平缝钢制连接的可修复装配式剪力墙结构抗剪性能研究 CSCD PKU
期刊论文 | 2024 , 47 (1) , 135-145 | 地震研究
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为实现剪力墙结构震损后的快速修复,提出一种水平缝钢制连接的可修复装配式剪力墙结构(Repairable precast shear wall with horizontal steel connections,RPW-HSC),采用 ABAQUS 软件对高宽比为 1.0 的 RPW-HSC试件进行建模分析,数值模拟结果与试验结果吻合良好.通过有限元参数化建模,研究钢制连接中剪切板的厚度、开缝处小钢柱的高宽比、钢板强度及轴压比对RPW-HSC试件抗剪性能的影响,建立RPW-HSC抗剪承载力设计方法.结果表明:RPW-HSC试件的刚度与抗剪承载力随剪切板厚度、钢材强度及轴压比的增加而增加,但参数过大会导致该试件由钢制剪切板破坏转变为上部预制混凝土墙体破坏;当钢制剪切板开缝处小钢柱高宽比小于3时,试件的破坏由开缝处小钢柱的弯曲破坏变成上部预制混凝土墙体的剪切破坏.因此,需控制合理的设计参数以实现RPW-HSC试件结构损伤可控及震损可修复.RPW-HSC试件抗剪承载力设计方法获得的理论计算值与试验值及有限元结果吻合较好,验证了抗剪承载力设计方法的准确性.

Keyword :

参数分析 参数分析 抗剪承载力设计 抗剪承载力设计 有限元分析 有限元分析 水平缝钢制连接 水平缝钢制连接 装配式剪力墙 装配式剪力墙

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GB/T 7714 潘钦锋 , 陈亚辉 , 吴应雄 et al. 水平缝钢制连接的可修复装配式剪力墙结构抗剪性能研究 [J]. | 地震研究 , 2024 , 47 (1) : 135-145 .
MLA 潘钦锋 et al. "水平缝钢制连接的可修复装配式剪力墙结构抗剪性能研究" . | 地震研究 47 . 1 (2024) : 135-145 .
APA 潘钦锋 , 陈亚辉 , 吴应雄 , 颜桂云 , 余勇胜 , 林相春 . 水平缝钢制连接的可修复装配式剪力墙结构抗剪性能研究 . | 地震研究 , 2024 , 47 (1) , 135-145 .
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Experimental and analytical studies on seismic performance of a steel slag CFDST T-joint EI CSCD PKU
期刊论文 | 2024 , 37 (6) , 1023-1032 | Journal of Vibration Engineering
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Concrete filled double-skin tubular structures(CFDST)that reuse waste steel slag demonstrate advantages in sustainable resource use. The interaction and coordination between steel tube and concrete make CFDST an effective solution to the stability issues,considering the expansion characteristic of steel slag. The expansion performance of the steel slag concrete can enhance the bond between the steel tube and its sandwich concrete. This paper presents a series of tests on a steel slag CFDST T-Joint under pseudo-static loading conditions to investigate its seismic performance. Five specimens were tested,including one ordinary concrete test specimen and four steel slag concrete test specimens. The variables tested were concrete type,hollow ratio,diameter ratio,and axial compression ratio. The results show that while the bearing capacity of steel slag concrete specimens is slightly lower than that of ordinary concrete,the displacement ductility and energy dissipation capacity significantly increased,by 69.46% and 48.20% respectively. As the hollow ratio increases from 0.3 to 0.5,the displacement ductility coefficient of the specimen increases by 9.69%. When the diameter ratio of branch main increases from 0.40 to 0.68,the displacement ductility coefficient increases by 82.44%. However,when the axial compression ratio increases from 0.1 to 0.2,the displacement ductility coefficient of the specimen decreases by 17.98%. A finite element model was established to simulate the hysteretic properties of the specimen. The simulation results are in agreement with the test results,verifying the validity of the finite element model. Based on the verified finite model,the parameters of influencing factors on the bearing capacity of the specimen were analyzed,and the optimum hollow ratio of the specimen was found to be about 70%. The use of steel slag greatly improves the seismic performance of the CFDST T-joint and can be widely used in concrete-filled steel tube engineering structures. © 2024 Nanjing University of Aeronautics an Astronautics. All rights reserved.

Keyword :

Axial compression Axial compression Bearing capacity Bearing capacity Concretes Concretes Concrete testing Concrete testing Ductility Ductility Energy dissipation Energy dissipation Expansion Expansion Finite element method Finite element method Hysteresis Hysteresis Seismic waves Seismic waves Seismology Seismology Slags Slags Tubular steel structures Tubular steel structures

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GB/T 7714 Zeng, Wu-Hua , Wang, Wei , Chen, Qing-Yi et al. Experimental and analytical studies on seismic performance of a steel slag CFDST T-joint [J]. | Journal of Vibration Engineering , 2024 , 37 (6) : 1023-1032 .
MLA Zeng, Wu-Hua et al. "Experimental and analytical studies on seismic performance of a steel slag CFDST T-joint" . | Journal of Vibration Engineering 37 . 6 (2024) : 1023-1032 .
APA Zeng, Wu-Hua , Wang, Wei , Chen, Qing-Yi , Wang, Jun-Fang , Wu, Ying-Xiong , Zhuo, Wei-Dong . Experimental and analytical studies on seismic performance of a steel slag CFDST T-joint . | Journal of Vibration Engineering , 2024 , 37 (6) , 1023-1032 .
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Analytical solution of one-dimensional periodic base band gap and its optimal design EI CSCD PKU
期刊论文 | 2024 , 37 (5) , 780-788 | Journal of Vibration Engineering
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Abstract :

The band gap characteristics of periodic structures provide a new idea for the field of seismic isolation in civil engineering,among which the one-dimensional periodic foundation structure has garnered significant attention due to its simple structure and economical applicability. In this paper,by studying the vibration characteristics of the one-dimensional periodic base structure,an approximate analytical solution for calculating the one-dimensional rubber-concrete periodic base band gap is derived,and on this basis,a one-dimensional rubber-concrete periodic foundation optimization design method based on the resonance zone of the superstructure is proposed. Numerical examples in the frequency domain and time domain show that the periodic foundation designed by this optimization method can ensure a good damping effect of its superstructure in a wide and continuous frequency range. © 2024 Nanjing University of Aeronautics an Astronautics. All rights reserved.

Keyword :

Concretes Concretes Energy gap Energy gap Foundations Foundations Frequency domain analysis Frequency domain analysis Numerical methods Numerical methods Piles Piles Rubber Rubber Time domain analysis Time domain analysis Vibration analysis Vibration analysis

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GB/T 7714 Wu, Qiao-Yun , Xiang, Fu-Jia , Huang, Ying-Hong et al. Analytical solution of one-dimensional periodic base band gap and its optimal design [J]. | Journal of Vibration Engineering , 2024 , 37 (5) : 780-788 .
MLA Wu, Qiao-Yun et al. "Analytical solution of one-dimensional periodic base band gap and its optimal design" . | Journal of Vibration Engineering 37 . 5 (2024) : 780-788 .
APA Wu, Qiao-Yun , Xiang, Fu-Jia , Huang, Ying-Hong , Jing, Guo-Qiang , Xu, Zhi-Feng , Wu, Ying-Xiong . Analytical solution of one-dimensional periodic base band gap and its optimal design . | Journal of Vibration Engineering , 2024 , 37 (5) , 780-788 .
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