螺旋箍筋-波纹管浆锚连接锚固性能试验

doi:10.13229/j.cnki.jdxbgxb.20221478

吉林大学学报(工学版) ›› 2024, Vol. 54 ›› Issue (9): 2484-2494.doi: 10.13229/j.cnki.jdxbgxb.20221478

• 材料科学与工程 • 上一篇

螺旋箍筋-波纹管浆锚连接锚固性能试验

赵金全^1,²(),周龙¹,丁永刚^1,²(),朱熔基³

^1.河南工业大学土木工程学院，郑州 450001
^2.河南省粮油仓储建筑与安全重点实验室，郑州 450001
^3.浙江东南网架股份有限公司设计院，杭州 311209

收稿日期:2022-11-18 出版日期:2024-09-01 发布日期:2024-10-28
通讯作者: 丁永刚 E-mail:zjq986@haut.edu.cn;cedyg@haut.edu.cn
作者简介:赵金全（1986-），男，讲师，博士.研究方向：结构抗震与新型结构体系.E-mail：zjq986@haut.edu.cn
基金资助:
河南省科技攻关项目(202102310568);河南省粮油仓储建筑与安全重点实验室开放课题项目(2021KF-B08);装配式散装楼仓房结构研究项目(YFLX-23005)

Experiment on anchoring performance of spiral stirrup-corrugated pipe grout splicing

Jin-quan ZHAO^1,²(),Long ZHOU¹,Yong-gang DING^1,²(),Rong-ji ZHU³

^1.College of Civil Engineering，Henan University of Technology，Zhengzhou 450001，China
^2.Henan Key Laboratory of Grain Storage Facility and Safety，Zhengzhou 450001，China
^3.Design Institute，Zhejiang Southeast Space Frame Co. ，Ltd. ，Hangzhou 311209，China

Received:2022-11-18 Online:2024-09-01 Published:2024-10-28
Contact: Yong-gang DING E-mail:zjq986@haut.edu.cn;cedyg@haut.edu.cn

摘要/Abstract

摘要：

为了对螺旋箍筋-波纹管约束浆锚连接在装配式结构中的应用提供理论依据，设计并制作了21个锚固拉拔试件，通过单向拉拔试验，分析了试件的受力过程及不同影响因素对试件黏结锚固强度的影响规律。结果表明：试件的破坏形态主要为拔出、劈裂拔出、拉断和劈裂拉断等4种；黏结强度随着锚固长度和钢筋直径的增加而减小；随着波纹管直径的增大，黏结强度与钢筋直径呈非线性变化；平均极限黏结强度随着灌浆料强度的增加而提高且锚固长度可进一步缩短至5d。工程应用中，当钢筋直径不大于16 mm时，建议锚固长度取5~7d，孔径比取2.5~4.28，当灌浆料强度f_cu≥80 MPa时，锚固长度不低于5d。

关键词: 结构工程, 螺旋箍筋-波纹管, 浆锚连接, 拉拔试验, 锚固性能, 锚固长度

Abstract:

To provide theoretical data for the spiral stirrup-corrugated pipe grout splicing used in prefabricated structures field， 21 anchorage pull-out specimens were designed and fabricated. The failure mode，load-displacement curves and the influence of different influencing factors on the bond anchorage strength of the specimen were analyzed by the pull-out test.The test results show that the failure modes of the specimens include rebar pull-out， splitting pull-out， rebar fracture and splitting fracture. The bond strength decreases with the increase of anchorage length and rebar diameter.The ultimate bond strength varies nonlinearly with the diameter of the corrugated pipe as the diameter increases. The average ultimate bond strength increases with increasing grout strength and the anchorage length can be further reduced to 5d.In engineering applications，when the rebar diameter is no more than 16 mm，the anchorage length is recommended to be 5d to 7d and the corrugated pipe diameter to be 2.5 to 2.8，and when the grout strength f_cu≥80 MPa， the anchorage length is not less than 5d.

Key words: structural engineering, spiral stirrup-corrugated pipe, grout splicing, pull-out test, anchorage performance, anchorage length

中图分类号:

TU375

赵金全,周龙,丁永刚,朱熔基. 螺旋箍筋-波纹管浆锚连接锚固性能试验[J]. 吉林大学学报(工学版), 2024, 54(9): 2484-2494.

Jin-quan ZHAO,Long ZHOU,Yong-gang DING,Rong-ji ZHU. Experiment on anchoring performance of spiral stirrup-corrugated pipe grout splicing[J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(9): 2484-2494.

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强度等级		抗压强度/MPa	平均值/MPa	抗拉强度/MPa	平均值/MPa
混凝土	C30	39.1	39.5	-	-
		39.4	39.5	-	-
		40.2	39.5	-	-
水泥基灌浆料	C60	70	74	4.61	5.09
		68	74	5.22	5.09
		84	74	5.43	5.09
	C80	81.2	81.7	7.17	6.82
		83	81.7	6.32	6.82
		81	81.7	6.98	6.82

钢筋直径/mm	屈服强度/MPa	极限强度/MPa	平均屈服强度/MPa	平均极限强度/MPa
14	431.3	576.3	433.2	568.2
	430.1	565.2	433.2	568.2
	438.2	569.1	433.2	568.2
16	437.9	597.2	445.4	599
	450.3	600.6	445.4	599
	447.9	599.3	445.4	599

试件编号	钢筋直径d/mm	波纹管直径D/mm	孔径比D/d	有效锚固长度l_a/mm	灌浆料强度/MPa
14-D40-3d-60	14	40	2.86	3d	60
14-D50-3d-60	14	50	3.57	3d	60
14-D60-3d-60	14	60	4.28	3d	60
14-D40-5d-60	14	40	2.86	5d	60
14-D50-5d-60	14	50	3.57	5d	60
14-D60-5d-60	14	60	4.28	5d	60
14-D40-7d-60	14	40	2.86	7d	60
14-D50-7d-60	14	50	3.57	7d	60
14-D60-7d-60	14	60	4.28	7d	60
16-D40-3d-60	16	40	2.50	3d	60
16-D50-3d-60	16	50	3.13	3d	60
16-D60-3d-60	16	60	3.75	3d	60
16-D40-5d-60	16	40	2.50	5d	60
16-D50-5d-60	16	50	3.13	5d	60
16-D60-5d-60	16	60	3.75	5d	60
16-D40-7d-60	16	40	2.50	7d	60
16-D50-7d-60	16	50	3.13	7d	60
16-D60-7d-60	16	60	3.75	7d	60
16-D40-3d-80	16	40	4.28	3d	80
16-D40-5d-80	16	40	3.13	5d	80
16-D40-7d-80	16	40	3.75	7d	80

试件编号	D/d	极限荷载F_u/kN	极限黏结强度τ_u/MPa	破坏形态
14-D40-3d-60	2.86	64.84	35.12	P
14-D50-3d-60	3.57	67.40	36.55	P
14-D60-3d-60	4.28	69.35	37.56	P
14-D40-5d-60	2.86	86.16	28.00	PS
14-D50-5d-60	3.57	87.82	29.01	P
14-D60-5d-60	4.28	92.66	30.11	B
14-D40-7d-60	2.86	90.93	21.11	B
14-D50-7d-60	3.57	90.55	21.02	B
14-D60-7d-60	4.28	91.10	21.15	B
16-D40-3d-60	2.50	92.34	38.31	PS
16-D50-3d-60	3.13	93.12	38.62	PS
16-D60-3d-60	3.75	91.77	38.06	P
16-D40-5d-60	2.50	105.42	26.23	PS
16-D50-5d-60	3.13	116.18	28.91	PS
16-D60-5d-60	3.75	112.48	27.98	PS
16-D40-7d-60	2.50	118.61	21.08	BS
16-D50-7d-60	3.13	117.59	20.90	B
16-D60-7d-60	3.75	118.78	21.11	B
16-D40-3d-80	2.50	97.58	40.41	P
16-D40-5d-80	2.50	119.14	29.65	B
16-D40-7d-80	2.50	118.90	21.13	B

试件	τ_u试/MPa	τ_u计/MPa	τ_u计/τ_u试	l_a^cr/mm	l_a^u/mm	破坏形态
14-D40-3d-60	35.11	37.48	1.06	37.5	73.3	P，Y
14-D50-3d-60	36.55	37.93	1.04	36.1	71.5	P，Y
14-D60-3d-60	37.56	38.83	1.03	34.8	69.7	P，Y
14-D40-5d-60	28.00	27.76	0.99	37.5	73.3	PS，Y
14-D50-5d-60	28.54	28.09	0.98	36.1	71.5	P，Y
14-D60-5d-60	30.11	28.43	0.94	34.8	69.7	B
14-D40-7d-60	21.11	23.59	1.12	37.5	73.3	B
14-D50-7d-60	21.02	23.88	1.14	36.1	71.5	B
14-D60-7d-60	21.15	24.16	1.14	34.8	69.7	B
16-D40-3d-60	38.31	37.26	0.97	47.4	94.1	PS，Y
16-D50-3d-60	39.24	37.65	0.96	45.9	92.2	PS，Y
16-D60-3d-60	38.06	38.05	0.99	44.6	90.4	P，Y
16-D40-5d-60	26.23	27.59	1.05	47.4	94.1	PS，Y
16-D50-5d-60	28.91	27.88	0.96	45.9	92.2	PS，Y
16-D60-5d-60	27.99	28.18	1.00	44.6	90.4	PS，Y
16-D40-7d-60	21.08	23.45	1.11	47.4	94.1	BS
16-D50-7d-60	20.90	23.70	1.13	45.9	92.2	B
16-D60-7d-60	21.11	23.95	1.13	44.6	90.4	B
16-D40-3d-80	40.40	41.13	1.02	34.6	77.0	P，Y
16-D40-5d-80	29.65	30.46	1.03	34.6	77.0	B
16-D40-7d-80	21.13	25.89	1.23	34.6	77.0	B

螺旋箍筋-波纹管浆锚连接锚固性能试验

Experiment on anchoring performance of spiral stirrup-corrugated pipe grout splicing

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公式	锚固长度l_a/mm
公式	14 mm钢筋	16 mm钢筋
混凝土结构设计规范	196.2	230.6
ACI 318-14	339.5	398.9
山显彬	143.0	168.0
本文建议取值	98.0	112.0

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