CN102966181A - Rigidity-heterosexual type combined shear connector - Google Patents
Rigidity-heterosexual type combined shear connector Download PDFInfo
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- CN102966181A CN102966181A CN2012105147200A CN201210514720A CN102966181A CN 102966181 A CN102966181 A CN 102966181A CN 2012105147200 A CN2012105147200 A CN 2012105147200A CN 201210514720 A CN201210514720 A CN 201210514720A CN 102966181 A CN102966181 A CN 102966181A
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Abstract
本发明公开了一种组合剪力连接件，包括焊钉，焊钉在其根部沿钉杆方向设有至少一条缝隙，缝隙内填有弹性件。本发明还提出了一种使用组合剪力连接件与钢构件、混凝土构件形成的组合结构，组合剪力连接件与钢构件焊接连接，混凝土构件浇筑于钢构件上，缝隙的缝宽方向和钢构件与混凝土构件结合面的较小抗剪刚度方向一致，缝隙的缝宽方向和钢构件与混凝土构件结合面的较大抗剪刚度方向正交。本发明在保证了钢与混凝土结合面可靠的抗剪强度同时，减小结合面的抗剪刚度；有效地减小钢与混凝土组合结构中由混凝土收缩、温度变化引起的混凝土拉应力；减小预应力混凝土桥面板与钢梁结合面初期抗剪刚度，有效增大预应力施加效果。
The invention discloses a combined shear force connector, which comprises a welding stud. The root of the welding stud is provided with at least one slit along the direction of the nail bar, and the slit is filled with an elastic piece. The present invention also proposes a combined structure using combined shear connectors, steel components, and concrete components. The combined shear connectors are welded to the steel components, and the concrete components are poured on the steel components. The direction of the minimum shear stiffness of the interface between the component and the concrete component is consistent, and the direction of the width of the gap is orthogonal to the direction of the maximum shear stiffness of the interface between the steel component and the concrete component. The present invention reduces the shear stiffness of the joint surface while ensuring the reliable shear strength of the steel-concrete joint surface; effectively reduces the concrete tensile stress caused by concrete shrinkage and temperature change in the steel-concrete composite structure; The initial shear stiffness of the joint surface between the prestressed concrete bridge deck and the steel beam can effectively increase the effect of prestressing.
Description
Technical field
The invention belongs to Steel concrete combining structure field, especially a kind of shear connector of Steel concrete bonding surface.
Background technology
Combining structure is the third form of structure that is only second to steel work, concrete structure.Wherein, the steel that the Steel concrete combining structure is strong with tensile property, the concrete that compressive property is strong, reasonably be used in respectively drawing zone and the compressional zone thereof of member, have good mechanical property and higher economy, in bridge engineering and Structural Engineering, be widely applied.
In the Steel concrete combining structure, the shear connector of Steel concrete bonding surface has played the effect that this bi-material is combined, and the stress performance of combining structure is had larger impact.Weldering nail connector is connector form the most frequently used in the combining structure.See also Fig. 1 a, Fig. 1 b, it is the weldering nail schematic diagram of prior art, and the nail bar of weldering nail 4 is made of solid.In the practical application, will weld first nail 4 connectors and be welded on the steel member, then the concreting member finally forms combining structure.
The shear behavior of weldering nail connector all directions is identical.Under the effects such as permanent mobile load, concrete shrinkage and temperature, when the weldering nail of very limited several specifications of stipulating on the code requirement carries out layout design, bonding surface shear stiffness, shear-carrying capacity usually appear, concrete is stressed, and stressed mutual restriction and inharmonious is followed closely in weldering: adopt small size weldering nail, the weldering nail is arranged overstocked, and bonding surface all directions shear stiffness is large, may cause tensile stress larger in the concrete; Adopt large scale weldering nail, the weldering nail was arranged rare, the bonding surface shear strength a little less than, the weldering nail is stressed larger, may cause weldering to be followed closely directly cutting off or fatigue failure occurs.Therefore, in, the reliable situation of shear-carrying capacity deposit controlled in the bonding surface shear stiffness, optimizing the shear connector arrangement, improving structure tension performance is a very important problem.
Summary of the invention
Adverse effect during for above-mentioned technological deficiency and application, it is reliable to the purpose of this invention is to provide a kind of shear-carrying capacity deposit, and difference is cut the controlled shear connector of direction shear stiffness in early stage.
Technical scheme of the present invention is as follows:
A kind of combined shear connector comprises the weldering nail, and described weldering nail is provided with at least one slit at its root along nail bar direction, is filled with elastic component in the described slit.
Described weldering nail is provided with a slit, and described slit is in the diametrical position in described nail bar cross section.
Described weldering nail is provided with a slit, and described gap position departs from described nail bar diameter of section.
The ratio of the horizontal projection length L of the camber line height H in described slit and camber line is less than or equal to 1/10.
Described weldering nails on and is provided with two slits, and described two slit symmetries are positioned at described nail bar diameter of section both sides.
Described weldering nail is provided with the slit of two quadratures.
Described gap width is more than or equal to 0.5mm, and less than or equal to 1.0mm, described chinky altitude is less than or equal to 3/4 of described weldering staple height.
Further, described elastomeric material is any in the lower sheet rubber of hardness, rubber grain, plastic sheet, the plastic grain.
Further, described sheet rubber or rubber grain are that shore hardness is 45 rubber.
The invention allows for a kind of combining structure:
A kind of combining structure of using described combined shear connector and steel member, concrete component to form, described weldering nail is connected with the steel Member Welding, described combined shear connector is connected with the steel Member Welding, described concrete component is built on the steel member, the seam cross direction in described slit is consistent with the less shear stiffness direction of concrete component bonding surface with the steel member, the larger shear stiffness direction quadrature of the seam cross direction in described slit and steel member and concrete component bonding surface.
The present invention compared with prior art has the following advantages and beneficial effect:
Adopt this connector, can be controlled in the bonding surface shear stiffness, in the reliable situation of shear-carrying capacity deposit, improve the arrangement of shear connector, improve the stressed of shear connector, concrete component and steel member.Having guaranteed the reliable shear strength of Steel concrete bonding surface simultaneously, reduce the shear stiffness of bonding surface; Effectively reduce the concrete pulling stress that caused by concrete shrinkage, variations in temperature in the Steel concrete combining structure; Reduce prestressed concrete bridge panel and girder steel bonding surface initial stage shear stiffness, effectively increase the prestress application effect; Improve steel-concrete composite beam hogging moment area concrete slab stress performance; Solve and be used for the shearing skewness that steel-concrete member weldering nail connector group is caused by excessive bonding surface shear stiffness; The possibility that has reduced connector self fatigue failure even directly cut off; Can obtain the diversified shear connector of rigidity, optimize the connector arrangement.
The present invention is comparatively comprehensive to the research of connector, has the advantages that versatility is wide, accuracy is high, creates good economic benefit and scientific research and is worth.
Description of drawings
Fig. 1 a is the overall schematic of existing weldering nail;
Fig. 1 b is the root section figure of existing weldering nail;
Fig. 2 a is the overall schematic of the weldering nail of the embodiment of the invention one;
Fig. 2 b is the root section figure of the weldering nail of the embodiment of the invention one;
Fig. 3 is the application schematic diagram of the embodiment of the invention one in steel-mixed combining structure;
Fig. 4 a is the overall schematic of the weldering nail of the embodiment of the invention two;
Fig. 4 b is the root section figure of the weldering nail of the embodiment of the invention two;
Fig. 5 a is the overall schematic of the weldering nail of the embodiment of the invention three;
Fig. 5 b is the root section figure of the weldering nail of the embodiment of the invention three;
Fig. 6 a is the overall schematic of the weldering nail of the embodiment of the invention four;
Fig. 6 b is the root section figure of the weldering nail of the embodiment of the invention four;
Fig. 7 a is the overall schematic of the weldering nail of the embodiment of the invention five;
Fig. 7 b is the root section figure of the weldering nail of the embodiment of the invention five.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are further described.
Please consult simultaneously Fig. 2 a, 2b.Utilize joint cutter to cut out a slit 7 at weldering nail 4 roots along nail bar 6 directions, and then obtain joint-cutting weldering nail 1.Slit 7 is positioned at nail bar 6 diametrical position.The diameter of weldering nail 4 and height are determined by the shear-carrying capacity designing requirement of Steel concrete bonding surface.Slit 7 width should be taken between the 0.5mm-1.0mm, and height is determined by the shear stiffness designing requirement of Steel concrete bonding surface, but should not surpass 3/4 of selected nail bar 6 height.Excessive for the minimizing of avoiding the connector shear-carrying capacity, slit 7 width should not be too wide, and slit 7 width just can play the effect that reduces largely shear stiffness during greater than 0.2mm.
Compare that to be cut performance identical with welding nail 4 all directions, the shear behavior that joint-cutting weldering nail 1 difference is cut direction will change, and have the characteristics of the rigidity opposite sex.When along the wide direction of seam when being cut, because the existence in slit 7, joint-cutting weldering nail 1 is in stressed early stage, and the part on 7 both sides, slit occurs bending and deformation respectively, therefore early stage the shear stiffness less; Along with stressed increase, slit 7 will be closed gradually, and the part on 7 both sides, slit can form whole cooperation and be subjected to Modes of" force, so the intermediary and later stages shear stiffness can get a promotion; Because it is very little that joint-cutting weldering nail 1 participates in the conventional weldering nail of the section area 4 minimizing degree of shearing resistance, therefore, the conventional weldering nail of this joint-cutting weldering nail 1 shear-carrying capacity and same specification is close.When being cut perpendicular to the seam cross direction, joint-cutting weldering nail 1 early, middle, late stage shear stiffness and ultimate shear-carrying capacity are all close with conventional weldering nail.
During the concreting member, the concrete that hardness is higher will be filled the slit in the joint-cutting weldering nail, can not fully deform so that 1 edge seam cross direction is followed closely in the joint-cutting weldering, and hinder the closure in slit 7.Therefore, filling elastic material in slit 7 can effectively avoid the slit by Concrete Filled, makes joint-cutting weldering nail 1 give full play to the stress performance of the rigidity opposite sex.So slit 7 width can not be too small, otherwise can't joint-cutting and filling elastic material.
The root weld of the combined shear connector that joint-cutting weldering nail 1 and elastomeric material are consisted of is on the steel member, then with sheet rubber inserted into gap 7,2 concreting members 3 on the steel member again, after to be connected surrounding concrete reached design strength, this shear connector can play the effect of transmitting internal force between steel member and the concrete component.
The length in slit 7 and width have influence on the shear behavior of joint-cutting weldering nail 1.Slit 7 is longer, and early stage, rigidity was less; Slit 7 is wider, and what the slit closure need to be larger is stressed, prolongs the stressed stage in early stage of joint-cutting weldering nail 1.Can length and the width in slit 7 be designed, reach instructions for use.
As shown in Figure 3, planning joint-cutting weldering nail 1 of the present invention is used on the combining structure of steel member 2 and concrete component 3 formation.Joint-cutting weldering nail 1 is welded on the steel member 2, so that the less shear stiffness direction of seam cross direction and Steel concrete bonding surface is consistent, the larger shear stiffness direction of vertical lap seam cross direction and Steel concrete bonding surface is consistent.Before concrete component 3 is built, after 1 welding of joint-cutting weldering nail is complete, in slit 7, insert elastomeric material, such as sheet rubber.Above-mentioned elastomeric material can be sheet rubber, also can be plastic sheet, also can be rubber grain and plastic grain.For convenient construction, the thickness of sheet rubber and plastic sheet is slightly less than gap width, and the material of sheet rubber should select the lower rubber of hardness, is 45 NR45 natural rubber such as shore hardness, and plastic sheet also should be selected the lower plastics of hardness.
In the practice of construction process, joint-cutting weldering nail 1 and sheet rubber can be prefabricated in the factory, and also can dispose at the construction field (site).After with joint-cutting weldering nail 1 and sheet rubber combination, concreting member 3 makes rigidity opposite sex combined shear connector play the effect that connects Steel concrete.
Shown in Fig. 4 a, 4b, cut slit 13 at joint-cutting weldering nail 12, and the position of diameter is departed from slit 13.So, the degree that reduces of the shear stiffness of joint-cutting weldering nail 12 slightly reduces compared to the joint-cutting weldering nail 1 among the embodiment 1.
Fig. 5 a, 5b are the distortion of embodiment 2, and on joint-cutting weldering nail 10, the position of diameter is departed from slit 11, and with respect to the nail bar less radian is arranged, and namely the ratio of the horizontal projection length L of the camber line height H in slit 11 and camber line is less than or equal to 1/10.By the variation to slit 11,13 width, length, can obtain the joint-cutting weldering nail of different shear stiffnesses.The slit curve form is designed to weldering nail, and to be cut variant consistent, cut distortion so that the weldering nail is easier, and shear stiffness is less.
Shown in Fig. 6 a, 6b, two slits 8 have been cut on the joint-cutting weldering nail 9.Article two, slit 8 symmetries are positioned at the nail bar 6 diameter left and right sides, and insert sheet rubber in every slit 8.The rigidity opposite sex shear connector 1 that present embodiment obtains is less along seam cross direction rigidity.The height in slit 8 is determined by the shear stiffness designing requirement of Steel concrete bonding surface, but should not surpass 3/4 of selected weldering nail 4 height.The slit number is more, and rigidity reduces more.
By adjusting the direction in slit, can adjust along the shear stiffness of slit direction shearing resistance and vertical clearance gap direction, reach the requirement of satisfying different structure.
Embodiment 5
Shown in Fig. 7 a, 7b, the slit 15 of cutting two quadratures on the joint-cutting weldering nail 14 so can be so that the shear stiffness of both direction reduces simultaneously.The shear-carrying capacity deposit of joint-cutting weldering nail 14 is reliable, descends but shear stiffness is whole.
In the Steel concrete combining structure, adopt rigidity ahermatypic combined shear connector of the present invention, in, the reliable situation of shear-carrying capacity deposit controlled in the bonding surface shear stiffness, make bonding surface have different shear stiffnesses in the different directions of being cut, solve bonding surface shear stiffness and shear-carrying capacity, concrete is stressed, and stressed etc. inharmonious of weldering nail, thereby in the situation that does not affect Steel concrete bonding surface shear strength, improve structure tension performance.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.
Claims (10)
1. a combined shear connector comprises the weldering nail, it is characterized in that:
Described weldering nail is provided with at least one slit at its root along nail bar direction, is filled with elastic component in the described slit.
2. combined shear connector as claimed in claim 1 is characterized in that: described weldering nail is provided with a slit, and described slit is in the diametrical position in described nail bar cross section.
3. combined shear connector as claimed in claim 1 is characterized in that: described weldering nail is provided with a slit, and described gap position departs from described nail bar diameter of section.
4. combined shear connector as claimed in claim 3, it is characterized in that: the ratio of the horizontal projection length L of the camber line height H in described slit and camber line is less than or equal to 1/10.
5. combined shear connector as claimed in claim 1, it is characterized in that: described weldering nails on and is provided with two slits, and described two slit symmetries are positioned at described nail bar diameter of section both sides.
6. combined shear connector as claimed in claim 1 is characterized in that: described weldering nail is provided with the slit of two quadratures.
7. such as each described combined shear connector of claim 1 to 6, it is characterized in that: described gap width is more than or equal to 0.5mm, and less than or equal to 1.0mm, described chinky altitude is less than or equal to 3/4 of described nail bar height.
8. combined shear connector as claimed in claim 7, it is characterized in that: described elastic component is any in the lower sheet rubber of hardness, rubber grain, plastic sheet, the plastic grain.
9. combined shear connector as claimed in claim 7, it is characterized in that: described sheet rubber or rubber grain are that shore hardness is 45 rubber.
10. a right to use requires the combining structure that 1 described combined shear connector and steel member, concrete component form, it is characterized in that: described combined shear connector and steel member (2) are welded to connect, described concrete component (3) is built on steel member (2), the seam cross direction in described slit is consistent with the less shear stiffness direction of concrete component (3) bonding surface with steel member (2), the larger shear stiffness direction quadrature of the seam cross direction in described slit and steel member (2) and concrete component (3) bonding surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210514720.0A CN102966181B (en) | 2012-12-05 | 2012-12-05 | Rigidity-heterosexual type combined shear connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210514720.0A CN102966181B (en) | 2012-12-05 | 2012-12-05 | Rigidity-heterosexual type combined shear connector |
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| Publication Number | Publication Date |
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| CN102966181A true CN102966181A (en) | 2013-03-13 |
| CN102966181B CN102966181B (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210514720.0A Expired - Fee Related CN102966181B (en) | 2012-12-05 | 2012-12-05 | Rigidity-heterosexual type combined shear connector |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437495A (en) * | 2013-07-18 | 2013-12-11 | 杭州博数土木工程技术有限公司 | Elastic rubber ring combined structure connector |
| CN104097363A (en) * | 2014-07-31 | 2014-10-15 | 江苏爵格工业设备有限公司 | Novel antiknock fireproof plate and preparation method thereof |
| CN105604193A (en) * | 2016-01-11 | 2016-05-25 | 北京城建设计发展集团股份有限公司 | Elastic sheet and hard material dot type composite connecting method without elastic loss |
| CN111155718A (en) * | 2020-02-17 | 2020-05-15 | 西安建筑科技大学 | Split peg |
| CN111502084A (en) * | 2020-04-29 | 2020-08-07 | 南宁学院 | Combined steel plate wall connecting structure |
| CN111997205A (en) * | 2020-09-07 | 2020-11-27 | 河北冀南标准件有限公司 | Connecting device convenient to install in narrow space and installation method thereof |
| CN112797065A (en) * | 2021-03-05 | 2021-05-14 | 西安建筑科技大学 | A split bolt and its manufacture and application |
| CN116305413A (en) * | 2023-01-19 | 2023-06-23 | 安徽省交通控股集团有限公司 | Wedge-shaped section combined shear design method and device |
| CN116949918A (en) * | 2023-07-25 | 2023-10-27 | 东南大学 | Composite beam concrete roof with hollow tube shear members and crack-resistant construction method |
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| CN101831869A (en) * | 2010-05-07 | 2010-09-15 | 同济大学 | Connecting structure of combined beam and concrete bearing cross beam |
| CN102493552A (en) * | 2011-11-29 | 2012-06-13 | 中铁二院工程集团有限责任公司 | Shear force connection member for flexible welding nails of combined structure of steel and concrete |
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Patent Citations (3)
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| US5368139A (en) * | 1993-07-02 | 1994-11-29 | General Motors Corporation | Drum brake shoe hold down nail and spring retainer |
| CN101831869A (en) * | 2010-05-07 | 2010-09-15 | 同济大学 | Connecting structure of combined beam and concrete bearing cross beam |
| CN102493552A (en) * | 2011-11-29 | 2012-06-13 | 中铁二院工程集团有限责任公司 | Shear force connection member for flexible welding nails of combined structure of steel and concrete |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437495B (en) * | 2013-07-18 | 2016-12-07 | 浙江中隧桥波形钢腹板有限公司 | Flexible rubber ring combinative structure connecting key |
| CN103437495A (en) * | 2013-07-18 | 2013-12-11 | 杭州博数土木工程技术有限公司 | Elastic rubber ring combined structure connector |
| CN104097363A (en) * | 2014-07-31 | 2014-10-15 | 江苏爵格工业设备有限公司 | Novel antiknock fireproof plate and preparation method thereof |
| CN105604193A (en) * | 2016-01-11 | 2016-05-25 | 北京城建设计发展集团股份有限公司 | Elastic sheet and hard material dot type composite connecting method without elastic loss |
| CN105604193B (en) * | 2016-01-11 | 2017-11-03 | 北京城建设计发展集团股份有限公司 | The elastic sheet material of nonelastic loss and hard material point type composite connecting method |
| CN111155718B (en) * | 2020-02-17 | 2025-03-11 | 西安建筑科技大学 | Split stud |
| CN111155718A (en) * | 2020-02-17 | 2020-05-15 | 西安建筑科技大学 | Split peg |
| CN111502084A (en) * | 2020-04-29 | 2020-08-07 | 南宁学院 | Combined steel plate wall connecting structure |
| CN111997205A (en) * | 2020-09-07 | 2020-11-27 | 河北冀南标准件有限公司 | Connecting device convenient to install in narrow space and installation method thereof |
| CN112797065A (en) * | 2021-03-05 | 2021-05-14 | 西安建筑科技大学 | A split bolt and its manufacture and application |
| CN116305413A (en) * | 2023-01-19 | 2023-06-23 | 安徽省交通控股集团有限公司 | Wedge-shaped section combined shear design method and device |
| CN116305413B (en) * | 2023-01-19 | 2024-05-31 | 安徽省交通控股集团有限公司 | Wedge-shaped section combined shear design method and device |
| CN116949918A (en) * | 2023-07-25 | 2023-10-27 | 东南大学 | Composite beam concrete roof with hollow tube shear members and crack-resistant construction method |
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| CN102966181B (en) | 2014-09-17 |
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Granted publication date: 20140917 Termination date: 20191205 |