CN1858375A - 新型多用螺旋钢纤维 - Google Patents

新型多用螺旋钢纤维 Download PDF

Info

Publication number
CN1858375A
CN1858375A CN 200610025497 CN200610025497A CN1858375A CN 1858375 A CN1858375 A CN 1858375A CN 200610025497 CN200610025497 CN 200610025497 CN 200610025497 A CN200610025497 A CN 200610025497A CN 1858375 A CN1858375 A CN 1858375A
Authority
CN
China
Prior art keywords
steel
steel fiber
concrete
novel multipurpose
screw steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN 200610025497
Other languages
English (en)
Other versions
CN100375822C (zh
Inventor
王艺霖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CNB2006100254978A priority Critical patent/CN100375822C/zh
Publication of CN1858375A publication Critical patent/CN1858375A/zh
Application granted granted Critical
Publication of CN100375822C publication Critical patent/CN100375822C/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Reinforcement Elements For Buildings (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

新型多用螺旋钢纤维，在国际专利分类表中属于E04C小类。设计方案是钢纤维为轴向刚度较大的紧密螺旋形，外表面具有螺旋形的突起肋，螺旋的中空内填充有能增强混凝土结构耐久性的粉末状或液态化学物质，比如钢筋阻锈剂等，且钢纤维两端是密封的。本发明与一般钢纤维相比，显著增强了与混凝土基材的粘结锚固作用，抗弯折能力较强，既能改善混凝土结构的耐久性，又能耗散外加能量，有利结构抗震。

Description

新型多用螺旋钢纤维
一技术领域
本发明涉及一种用于掺入混凝土，共同构成钢纤维混凝土的钢纤维，在土木工程诸多领域均可应用，在国际专利分类表中应属于E04C小类。
二背景技术
用钢纤维掺入混凝土基材而构成的钢纤维混凝土作为一种新型建筑材料，近年来在道路路面，桥梁结构，机场跑道，铁路枕轨，隧道衬砌，房屋建筑，水工结构等工程中应用日益广泛。其相对于普通的混凝土材料，优点十分明显。在很多情况下也具有比钢筋混凝土更好的性质。但随着应用的日益广泛和工程要求的提高，钢纤维混凝土也暴露出一些弱点。主要问题为钢纤维与混凝土粘结锚固效果不太理想，钢纤维品种单一，作用单一等。这些问题的解决关键在于设计出高效实用的钢纤维。对此，已有不少技术人员提出了新的设计方案，不乏可取之处。例如已向中国国家知识产权局申请专利的哑铃形钢纤维(申请号02232882.3)，端钩形钢纤维(申请号02232883.1)，压痕形钢纤维(申请号02232884.X)，螺旋钢纤维(申请号89220089.8)等。但这些方案也存在造型复杂，难以加工，效果有限，功能单一等缺陷。
三发明内容
针对以上问题，本发明作了较大的技术改进。本新型钢纤维既可充分发挥钢纤维的基本功能，加强与混凝土的粘结锚固，又能改善混凝土结构的耐久性和抗震性能，可以说是一种真正高效实用的钢纤维。
本发明的基本技术特点是：(1)钢纤维外表面具有螺旋形的突起肋；(2)钢纤维为紧密螺旋形，且轴向刚度较大；(3)螺旋的中空内填充有能增强混凝土结构耐久性的粉末状或液态化学物质，比如钢筋阻锈剂等；(4)钢纤维两端是密封的。
本发明的关键技术创新价值在于：
1、钢纤维外表面有突起肋，能增强钢纤维与混凝土基材的粘结锚固作用。
2、钢纤维为紧密螺旋形，且轴向刚度较大，在使用中，当混凝土构件内拉应力较小，无裂缝或裂缝极小时，本钢纤维作用同一般的钢纤维；当构件已产生稍大裂缝时，由于本设计纤维与混凝土基材之间有良好的粘结锚固性，不易被拔出，因此将使螺旋钢纤维像弹簧一样被拉长，这个拉伸过程可耗散结构所受的外加能量，从而减轻结构内其他部位所受的作用，提高结构的抗震能力。
3、螺旋中空部分的粉末状或液态化学物质在纤维拉伸的过程中被释放出来，从而得以开始发挥作用，改善裂缝开展后的结构耐久性。例如若是钢筋阻锈剂则可以减缓混凝土内钢筋的锈蚀，从而减缓因钢筋锈胀而引起的破坏。
4、由于本发明是螺旋结构，且经过压紧处理，因此抗弯折能力比较强。在服役过程中受到径向应力作用时，也能较好的抵抗并耗散能量。在包装，运输，施工搅拌过程中不会折断。
四附图说明
附图给出了本多用螺旋钢纤维的结构示意图：
图1是钢纤维示意图。
图2是钢条截面示意图。
五具体实施方式
为了实现本多用螺旋钢纤维的量化生产，保证功能完整实现，对具体实施方式说明如下：
1加工一面带有突起肋的细长钢条，钢条可由直接加工而成或通过特制硬质合金拔丝模冷拔得到。
2将钢条一端固定在硬质圆棍上，通过硬质圆棍的旋转拉动可将钢条加工成螺旋形。注意钢条有突起的一面向外，螺旋缠绕紧密，中间不要留空隙。
3沿螺旋轴向从两端施加一定压力，使螺旋被压紧，增大其轴向刚度。具体弹性模量值可根据工程实际要求确定，应使螺旋钢纤维在已知拉力下的变形值满足控制变形量。
4在螺旋内部的中空部分填充粉末状或液态化学物质。
5以所需钢纤维长度为间距将螺旋径向截断。
6将截断后的螺旋钢纤维两端密封，以贮存内部化学物质。
7钢条的具体尺寸a、b、c及钢纤维长度l的值可根据具体工程情况由试验确定。注意b的值只需满足a≥b≥0即可。
由上可知，本新型螺旋钢纤维与以往众多钢纤维设计相比，具有与混凝土粘结锚固好、抗弯折能力强、可填充有益的化学物质、能耗散外加能量等特点。在具备一般钢纤维性质的基础上，能使材料强度得到充分发挥，改善混凝土结构的耐久性，同时增强抗震能力。因此是现有钢纤维的良好升级换代品，具有很大的市场应用价值。

Claims (3)

1.一种新型多用螺旋钢纤维，其特征是表面有螺旋形的突出肋。
2.根据权利要求1所述的新型多用螺旋钢纤维，其特征是：钢纤维为紧密螺旋形，之间不留空隙，两端是密封的，且具有较高的轴向抗拉强度。
3.根据权利要求1所述的新型多用螺旋钢纤维，其特征是：在螺旋内部的中空部分填充有利于混凝土结构耐久性的化学物质。
CNB2006100254978A 2006-04-06 2006-04-06 多用螺旋钢纤维 Expired - Fee Related CN100375822C (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006100254978A CN100375822C (zh) 2006-04-06 2006-04-06 多用螺旋钢纤维

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006100254978A CN100375822C (zh) 2006-04-06 2006-04-06 多用螺旋钢纤维

Publications (2)

Publication Number Publication Date
CN1858375A true CN1858375A (zh) 2006-11-08
CN100375822C CN100375822C (zh) 2008-03-19

Family

ID=37297324

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2006100254978A Expired - Fee Related CN100375822C (zh) 2006-04-06 2006-04-06 多用螺旋钢纤维

Country Status (1)

Country Link
CN (1) CN100375822C (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112726920A (zh) * 2020-12-24 2021-04-30 佛山建装建筑科技有限公司 一种叠合板

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8717648U1 (de) * 1987-09-11 1989-09-28 ARBED S.A., Luxemburg/Luxembourg Warmgewalzter Betonbewehrungsstab, insbesondere Betonrippenstab
CN2063548U (zh) * 1989-11-22 1990-10-10 武汉水利电力学院 新型螺旋钢纤维
CN2526387Y (zh) * 2002-05-23 2002-12-18 王大中 一种压痕形钢纤维

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112726920A (zh) * 2020-12-24 2021-04-30 佛山建装建筑科技有限公司 一种叠合板

Also Published As

Publication number Publication date
CN100375822C (zh) 2008-03-19

Similar Documents

Publication Publication Date Title
KR102376427B1 (ko) 보강 바 및 그의 제조방법
Huang et al. Impact behavior of concrete columns confined by both GFRP tube and steel spiral reinforcement
CA2664552C (en) Reinforcement structures
Mao et al. Bond-slip constitutive model and numerical analysis for rebar embedded in steel-polyethylene hybrid fiber-reinforced cementitious composites
Marthong et al. Structural behavior of recycled aggregate concrete beam-column connection in presence of micro concrete at joint region
CN108894432A (zh) 一种超高性能钢纤维混凝土管约束再生块体混凝土柱
Zhang et al. Rapid repair of RC bridge columns with prestressed stainless-steel hoops and stainless-steel jackets
Ma et al. Cyclic loading tests and shear strength of composite joints with steel-reinforced recycled concrete columns and steel beams
Li et al. Bond behavior of stainless steel wire ropes embedded in engineered cementitious composites
JP7223474B2 (ja) コンクリート可変断面プレキャスト角杭
Lai et al. Experimental study on the axial compressive behaviour of steel reinforced concrete composite columns with stay-in-place ECC jacket
Ji et al. Structural application of engineered cementitious composites (ECC): A state-of-the-art review
Leblouba et al. Shear strength at the interface of precast bridge concrete decks and girders subjected to cyclic loading with varying speeds
Zhou et al. Seismic retrofitting of coastal structural columns with steel bars locally corroded to fracture using sprayed ECC overlays and FRP jackets
CN1858375A (zh) 新型多用螺旋钢纤维
Xu et al. Study on bond behaviour of stainless steel reinforced concrete
He et al. Effects of ring-type and straight steel fibres on the compressive performance of rubber-recycled aggregate concrete
Makhlouf et al. Efficiency of innovative strengthening techniques and anchorage systems using different materials on flexure performance of RC beams
Correal et al. Cyclic tests of full-scale fiber-reinforced concrete (FRC) walls with steel and hybrid fibers for low-rise buildings
Fanning et al. Smeared crack models of RC beams with externally bonded CFRP plates
Carpinteri et al. Mechanical damage of ordinary or prestressed reinforced concrete beams under cyclic bending
Xie et al. Ultimate strength behaviour of reinforced concrete beams strengthened by aluminium-alloy plates
Lv et al. Flexural performance of reinforced concrete beams strengthened using near-surface-mounted carbon-fiber-reinforced polymer bars: Effects of bonding patterns
Matsumoto et al. Grouted connection tests in development of precast bent cap system
CN213417550U (zh) 一种钢管混凝土拱桥体外预应力系杆体系

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP02 Change in the address of a patent holder

Address after: 200240, room 468, No. 558, Lane 702, Jinping Road, Shanghai, Minhang District

Patentee after: Wang Yilin

Address before: 1201, box 800, Jiaotong University, 200240 Dongchuan Road, Shanghai, Minhang District

Patentee before: Wang Yilin

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080319

Termination date: 20110406