CN101949199A - Connecting structure and method for SRC (Steel Reinforced Concrete) steel rib and RC (Reinforced Concrete) beam steel - Google Patents
Connecting structure and method for SRC (Steel Reinforced Concrete) steel rib and RC (Reinforced Concrete) beam steel Download PDFInfo
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- CN101949199A CN101949199A CN 201010272637 CN201010272637A CN101949199A CN 101949199 A CN101949199 A CN 101949199A CN 201010272637 CN201010272637 CN 201010272637 CN 201010272637 A CN201010272637 A CN 201010272637A CN 101949199 A CN101949199 A CN 101949199A
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Abstract
The invention relates to connecting structure and method for an SRC pillar steel rib and RC beam steel. The connecting structure comprises the SRC pillar steel rib and the RC beam steel, wherein both ends of the RC beam steel are connected with the SRC pillar steel rib respectively through a connecting seat; the connecting seat is fixedly arranged on the SRC pillar steel rib; a splicing assembly is also arranged between the RC beam steel and the connecting seat; the splicing assembly comprises a splicing sleeve and a screwing piece which are coaxially arranged; one end of the splicing sleeve is coaxially fixedly or movably sleeved with the RC beam steel, and the other end thereof is connected with the connecting seat through the screwing piece; and the splicing sleeve and the screwing piece can relatively move along the axial direction and are locked with each other at a set position in the axial direction, and thus, the SRC pillar steel rib and the RC beam steel are tightly connected. In the invention, the whole RC beam steel and the SRC pillar steel rib can be mechanically connected without operations of cutting off the RC beam steel and the subsequent overlapping or welding and the like, thereby not only greatly enhancing the connecting strength but also effectively simplifying the process operation and reducing the working strength and the operating cost.
Description
Technical field
The present invention be specifically related in the construction engineering technical field a kind of simple in structure, bonding strength is high, the SRC post reinforcing bar of easy construction and RC beam steel syndeton and method.
Background technology
Steel reinforced concrete (SRC) combining structure is one of primary structure form of using of multi-rise building from now on, because the steel concrete cost is lower, the combining form of SRC post reinforcing bar and RC beam steel is adapted at applying in the engineering practice of China.
The mechanical connection manner of SRC post reinforcing bar and RC beam steel as shown in Figure 1 at present, the RC beam steel need cut off, the middle employing overlaps or welding, its two ends are connected with the branch sleeve that is welded on SRC post reinforcing bar, because of the RC beam steel is not to be connected with SRC post reinforcing bar with whole reinforcing bar, so just cause bonding strength to reduce, and operation intensity improve.
Summary of the invention
The objective of the invention is to propose a kind of SRC post reinforcing bar and RC beam steel syndeton and method, it can be fixedlyed connected whole RC beam steel with the RC beam steel, and the bonding strength height is simple in structure, simple operation, thus overcome deficiency of the prior art.
For achieving the above object, the present invention has adopted following technical scheme:
A kind of SRC post reinforcing bar and RC beam steel syndeton comprise SRC post reinforcing bar and RC beam steel, and described RC beam steel two ends are connected with SRC post reinforcing bar by a connecting seat respectively, and described Connection Block is fixedly installed on the SRC post reinforcing bar, it is characterized in that:
Also be provided with the continued access assembly between described RC beam steel and the Connection Block, described continued access assembly comprises the continued access sleeve and the spiro connecting piece of coaxial setting, described continued access sleeve one end and the coaxial fixed or movable socket of RC beam steel, the other end is connected with Connection Block through spiro connecting piece, and described continued access sleeve and spiro connecting piece relative motion vertically, and a desired location in the axial direction locks mutually, makes SRC post reinforcing bar and RC beam steel be fastenedly connected.
Say further:
Described Connection Block is a branch sleeve, and the one end is fixedly installed on the SRC post reinforcing bar, and the other end is provided with threaded mounting hole vertically;
Described continued access sleeve one end and RC beam steel one end are fixedly sleeved, and the other end is provided with threaded connection hole vertically;
Described threaded connector two ends are separately positioned in described threaded mounting hole and the threaded connection hole, and described threaded connector can move freely between described threaded mounting hole and threaded connection hole vertically, simultaneously, the length of described threaded connector less than described threaded mounting hole hole at the bottom of with the threaded connection hole hole at the bottom of spacing.
An also coaxial hold-down nut and the rotatable nut of being provided with on the described threaded connector, when SRC post reinforcing bar and RC beam steel are fastenedly connected, described hold-down nut contacts fully with the branch sleeve other end and is fixing, and simultaneously, described rotatable nut contacts fully with the continued access sleeve other end and be fixing.
The end that described threaded connector is arranged in the described threaded mounting hole is connected with interior hexagonal (hexagon)nut, and offers the ladder hole that can pass through for the instrument of the described hexagonal (hexagon)nut of rotation on the described branch sleeve outer wall.
Be provided with pad between one end of described threaded connector and the interior hexagonal (hexagon)nut, and the also coaxial hold-down nut that is provided with on the described threaded connector, when SRC post reinforcing bar and RC beam steel were fastenedly connected, described hold-down nut contacted fully with continued access sleeve one end and is fixing.
Described continued access sleeve is actively socketed on the RC beam steel, and be provided with locking mechanism between continued access sleeve one end and the RC beam steel, the other end is provided with threaded connection hole, described spiro connecting piece one end is connected with Connection Block, the other end is connected with described threaded connection hole, described locking mechanism comprises the barrel that radially passes described continued access sleeve more than, and the trip bolt of conflicting with RC beam steel outer wall.
Described Connection Block is a branch sleeve, and the one end is fixedly installed on the SRC post reinforcing bar, and the other end is provided with threaded mounting hole vertically, and described spiro connecting piece one end is connected with this threaded mounting hole.
A kind of SRC post reinforcing bar and the method for attachment of RC beam steel is characterized in that this method is:
The coaxial continued access assembly that mainly constitutes that is provided with between RC beam steel and Connection Block by continued access sleeve and spiro connecting piece, and, simultaneously the continued access sleeve other end is connected with Connection Block on being fixed on SRC post reinforcing bar through spiro connecting piece the coaxial fixed or movable socket of continued access sleeve one end and RC beam steel;
Regulate continued access sleeve and/or spiro connecting piece, make the relative motion vertically of continued access sleeve and spiro connecting piece;
A desired location in the axial direction locks continued access sleeve and spiro connecting piece mutually, makes SRC post reinforcing bar and RC beam steel be fastenedly connected.
Particularly:
Described Connection Block is a branch sleeve, and the one end is fixedly installed on the SRC post reinforcing bar, and the other end is provided with threaded mounting hole vertically;
Described continued access sleeve one end and RC beam steel one end are fixedly sleeved, and the other end is provided with threaded connection hole vertically;
Described threaded connector two ends are separately positioned in described threaded mounting hole and the threaded connection hole, and described threaded connector can move freely between described threaded mounting hole and threaded connection hole vertically, simultaneously, the length of described threaded connector less than described threaded mounting hole hole at the bottom of with the threaded connection hole hole at the bottom of spacing;
And:
(1) an also coaxial hold-down nut and the rotatable nut of being provided with on the described threaded connector, when SRC post reinforcing bar and RC beam steel are fastenedly connected, described hold-down nut contacts fully with the branch sleeve other end and is fixing, simultaneously, described rotatable nut contacts fully with the continued access sleeve other end and is fixing;
Or, (2) end that is arranged in the described threaded mounting hole of described threaded connector is connected with pad and interior hexagonal (hexagon)nut in turn, and offer the ladder hole that can pass through on the described branch sleeve outer wall for the instrument of the described hexagonal (hexagon)nut of rotation, simultaneously, the also coaxial hold-down nut that is provided with on the described threaded connector, when SRC post reinforcing bar and RC beam steel were fastenedly connected, described hold-down nut contacted fully with continued access sleeve one end and is fixing.
Described Connection Block is a branch sleeve, the one end is fixedly installed on the SRC post reinforcing bar, the other end is provided with threaded mounting hole vertically, described continued access sleeve is actively socketed on the RC beam steel, be provided with locking mechanism between one end and the RC beam steel, the other end is provided with threaded connection hole, described spiro connecting piece one end is connected with described threaded mounting hole, the other end is connected with described threaded connection hole, described locking mechanism comprises the barrel that radially passes described continued access sleeve more than, and the trip bolt of conflicting with RC beam steel outer wall.
Compared with prior art, beneficial effect of the present invention is: by setting up the continued access assembly of mainly being made up of continued access sleeve and spiro connecting piece at SRC post reinforcing bar and RC beam steel, thereby can be with whole reinforcing bar of RC beam and SRC post reinforcing bar mechanical connection, and need not to block RC beam steel and operations such as follow-up overlap joint or welding, not only significantly promoted bonding strength, and effectively simplified technological operation, reduced working strength and operating cost.
Description of drawings
Fig. 1 is SRC post reinforcing bar and a RC beam steel syndeton schematic diagram in the prior art;
Fig. 2 .1 is that a kind of SRC post reinforcing bar is connected structural representation before in the specific embodiment of the invention with the RC beam steel;
Fig. 2 .2 is the structural representation after the reinforcing bar of SRC post shown in Fig. 2 .1 is connected with the RC beam steel;
Fig. 3 .1 is that another kind of SRC post reinforcing bar is connected structural representation before in the specific embodiment of the invention with the RC beam steel;
Fig. 3 .2 is the structural representation after the reinforcing bar of SRC post shown in Fig. 3 .1 is connected with the RC beam steel;
Fig. 4 .1 is that another SRC post reinforcing bar is connected structural representation before in the specific embodiment of the invention with the RC beam steel;
Fig. 4 .2 is the structural representation after the reinforcing bar of SRC post shown in Fig. 4 .1 is connected with the RC beam steel;
Fig. 4 .3 is the structural representation of branch sleeve shown in Fig. 4 .1.
The specific embodiment
Below cooperate and graphic technical scheme of the present invention is done more detailed description, anyly have the knack of this skill person and can implement according to this studying the present specification postscript carefully in order to do making.
Shown in Fig. 2 .1 and Fig. 2 .2 first kind of embodiment of SRC post reinforcing bar of the present invention and RC beam steel syndeton, wherein, A1 is the RC beam steel, A21, A22 is the continued access sleeve, be processed with screw A212 in the continued access sleeve, A222 and through hole A211, A221, continued access sleeve A21 is inserted at RC beam steel A1 two ends respectively, through hole A211 in the A22, A221, utilize oil pressure machinery that continued access sleeve and RC beam steel A1 pressing is (certain, also can take other replaceable modes such as seccotine adhesive bond), bolt A31 is used for branch sleeve A61 and continued access sleeve A21, bolt A32 be used for branch sleeve A62 and and continued access sleeve A22, branch sleeve A61, all be processed with screw in the A62 and be respectively A611 and A621, in order to respectively with bolt A31, A32 connects, branch sleeve A61, the A62 other end is processed with face of weld A612, A622, utilize welding respectively with SRC post reinforcing bar A81, A82 connects, A71, A72 is a scolder, hold-down nut A41 and rotatable nut A51 are housed on the bolt A31, nut A51 plays the end face fixation, hold-down nut A41 rises spacing and the end face fixation simultaneously, hold-down nut A42 and rotatable nut A52 are housed on the bolt A32, nut A52 plays the end face fixation, and hold-down nut A42 rises spacing and the end face fixation simultaneously.
Mounting means: utilize spanner rotation hold-down nut A41 and hold-down nut A42, respectively bolt A31, A32 are changed among sleeve A21, the A22, up to hold-down nut A41 being contacted with sleeve A22 fully with sleeve A21, hold-down nut A42 and fixing, utilize spanner respectively swivel nut A51, A52 at last, nut A51, nut A52 are contacted fully and fixing respectively with sleeve A61, A62.
Shown in Fig. 3 .1 and Fig. 3 .2 second kind of embodiment of SRC post reinforcing bar of the present invention and RC beam steel syndeton, wherein, B1 is the RC beam steel, B21, B22 is the continued access sleeve, one end is processed with through hole B211, B221 is used for being connected with RC beam steel B1, be processed with some screw B212 diametrically vertically, B222, be used to install some trip bolt B31, B32, the other end is processed with screw B213, B223, utilize bolt B 41, B42 respectively with other two sleeve B51, B52 connects, sleeve B51, B52 is processed with screw B511, B521 and face of weld B512, B522, utilize welding respectively with SRC post reinforcing bar B71, B72 connects, B61, B62 is a scolder.
Mounting means: rotate continued access sleeve B21, B22, make it to be connected with other two sleeve B51, B52 respectively and fixing through bolt B 41, B42, then utilize spanner rotation trip bolt B31, B32 until its nut fracture, trip bolt B31, B32 are pressed in the RC beam steel and make it fixing at this moment.
It shown in Fig. 4 .1～Fig. 4 .3 the third embodiment of SRC post reinforcing bar of the present invention and RC beam steel syndeton, wherein, C1 is the RC beam steel, C21, C22 is the continued access sleeve, an end is processed with screw C212 in the continued access sleeve, C222, the other end is processed with through hole C211, C221, continued access sleeve C 21 is inserted at RC beam steel C1 two ends respectively, through hole C211 in the C22, C221, utilize oil pressure machinery with continued access sleeve and RC beam steel C1 pressing, utilize bolt C41, C42 respectively with other two sleeve C 51, C52 connects, bolt C41, C42 one end is processed with screw thread C411, C421, the other end is processed with interior hexagonal (hexagon)nut C413, C423, hexagonal (hexagon)nut is processed with pad C412 in adjacent, C422, hold-down nut C31, C32 is installed in bolt C41, on the C42, be used for fixedly continued access sleeve C of end face 21, C22, sleeve C 51, be processed with ladder hole C511 in the C52, C521, bolt C41, C42 is installed on ladder hole C511, in the C521, sleeve C 51, C52 is processed with face of weld C512, C522, utilize welding respectively with SRC post reinforcing bar C71, C72 connects, C61, C62 is a scolder.
Mounting means: utilize spanner swivel bolt C41, C42, make it to change over to respectively continued access sleeve C 21, C22 and fixing, utilize spanner rotation hold-down nut C31 again, C32 makes it to contact fully with continued access sleeve C 21, C22 respectively and fixing.
Need to prove that in above-mentioned first kind and the third embodiment, described continued access sleeve and RC beam steel can adopt the structure that is wholely set; In above-mentioned second kind of embodiment, also can adopt other common latch-up structure between continued access sleeve and the RC beam steel, and bolt B 41, B42 can adopt the structure that is wholely set with branch sleeve B51, B52.And in above-mentioned all embodiments, the known device that is equal to of institute is replaced can to adopt those skilled in the art as members such as nut, bolts.
In general; the above person only is in order to explain the present invention's preferred embodiment, is not that attempt is done any formal restriction to the present invention according to this, be with; all have in following any modification or change of doing relevant the present invention of identical invention spirit, all must be included in the category that the invention is intended to protection.
Claims (10)
1. SRC post reinforcing bar and RC beam steel syndeton comprise SRC post reinforcing bar and RC beam steel, and described RC beam steel two ends are connected with SRC post reinforcing bar by a connecting seat respectively, and described Connection Block is fixedly installed on the SRC post reinforcing bar, it is characterized in that:
Also be provided with the continued access assembly between described RC beam steel and the Connection Block, described continued access assembly comprises the continued access sleeve and the spiro connecting piece of coaxial setting, described continued access sleeve one end and the coaxial fixed or movable socket of RC beam steel, the other end is connected with Connection Block through spiro connecting piece, and described continued access sleeve and spiro connecting piece relative motion vertically, and a desired location in the axial direction locks mutually, makes SRC post reinforcing bar and RC beam steel be fastenedly connected.
2. SRC post reinforcing bar as claimed in claim 1 and RC beam steel syndeton is characterized in that:
Described Connection Block is a branch sleeve, and the one end is fixedly installed on the SRC post reinforcing bar, and the other end is provided with threaded mounting hole vertically;
Described continued access sleeve one end and RC beam steel one end are fixedly sleeved, and the other end is provided with threaded connection hole vertically;
Described threaded connector two ends are separately positioned in described threaded mounting hole and the threaded connection hole, and described threaded connector can move freely between described threaded mounting hole and threaded connection hole vertically, simultaneously, the length of described threaded connector less than described threaded mounting hole hole at the bottom of with the threaded connection hole hole at the bottom of spacing.
3. SRC post reinforcing bar as claimed in claim 2 and RC beam steel syndeton, it is characterized in that: an also coaxial hold-down nut and the rotatable nut of being provided with on the described threaded connector, when SRC post reinforcing bar and RC beam steel are fastenedly connected, described hold-down nut contacts fully with the branch sleeve other end and is fixing, simultaneously, described rotatable nut contacts fully with the continued access sleeve other end and is fixing.
4. SRC post reinforcing bar as claimed in claim 2 and RC beam steel syndeton is characterized in that:
The end that described threaded connector is arranged in the described threaded mounting hole is connected with interior hexagonal (hexagon)nut, and offers the ladder hole that can pass through for the instrument of the described hexagonal (hexagon)nut of rotation on the described branch sleeve outer wall.
5. SRC post reinforcing bar as claimed in claim 4 and RC beam steel syndeton is characterized in that:
Be provided with pad between one end of described threaded connector and the interior hexagonal (hexagon)nut, and the also coaxial hold-down nut that is provided with on the described threaded connector, when SRC post reinforcing bar and RC beam steel were fastenedly connected, described hold-down nut contacted fully with continued access sleeve one end and is fixing.
6. SRC post reinforcing bar as claimed in claim 1 and RC beam steel syndeton is characterized in that:
Described continued access sleeve is actively socketed on the RC beam steel, and be provided with locking mechanism between continued access sleeve one end and the RC beam steel, the other end is provided with threaded connection hole, described spiro connecting piece one end is connected with Connection Block, the other end is connected with described threaded connection hole, described locking mechanism comprises the barrel that radially passes described continued access sleeve more than, and the trip bolt of conflicting with RC beam steel outer wall.
7. SRC post reinforcing bar as claimed in claim 6 and RC beam steel syndeton is characterized in that:
Described Connection Block is a branch sleeve, and the one end is fixedly installed on the SRC post reinforcing bar, and the other end is provided with threaded mounting hole vertically, and described spiro connecting piece one end is connected with this threaded mounting hole.
8. SRC post reinforcing bar and the method for attachment of RC beam steel is characterized in that this method is:
The coaxial continued access assembly that mainly constitutes that is provided with between RC beam steel and Connection Block by continued access sleeve and spiro connecting piece, and, simultaneously the continued access sleeve other end is connected with Connection Block on being fixed on SRC post reinforcing bar through spiro connecting piece the coaxial fixed or movable socket of continued access sleeve one end and RC beam steel;
Regulate continued access sleeve and/or spiro connecting piece, make the relative motion vertically of continued access sleeve and spiro connecting piece;
A desired location in the axial direction locks continued access sleeve and spiro connecting piece mutually, makes SRC post reinforcing bar and RC beam steel be fastenedly connected.
9. SRC post reinforcing bar as claimed in claim 8 and the method for attachment of RC beam steel is characterized in that:
Described Connection Block is a branch sleeve, and the one end is fixedly installed on the SRC post reinforcing bar, and the other end is provided with threaded mounting hole vertically;
Described continued access sleeve one end and RC beam steel one end are fixedly sleeved, and the other end is provided with threaded connection hole vertically;
Described threaded connector two ends are separately positioned in described threaded mounting hole and the threaded connection hole, and described threaded connector can move freely between described threaded mounting hole and threaded connection hole vertically, simultaneously, the length of described threaded connector less than described threaded mounting hole hole at the bottom of with the threaded connection hole hole at the bottom of spacing;
And:
(1) an also coaxial hold-down nut and the rotatable nut of being provided with on the described threaded connector, when SRC post reinforcing bar and RC beam steel are fastenedly connected, described hold-down nut contacts fully with the branch sleeve other end and is fixing, simultaneously, described rotatable nut contacts fully with the continued access sleeve other end and is fixing;
Or, (2) end that is arranged in the described threaded mounting hole of described threaded connector is connected with pad and interior hexagonal (hexagon)nut in turn, and offer the ladder hole that can pass through on the described branch sleeve outer wall for the instrument of the described hexagonal (hexagon)nut of rotation, simultaneously, the also coaxial hold-down nut that is provided with on the described threaded connector, when SRC post reinforcing bar and RC beam steel were fastenedly connected, described hold-down nut contacted fully with continued access sleeve one end and is fixing.
10. SRC post reinforcing bar as claimed in claim 8 and the method for attachment of RC beam steel is characterized in that:
Described Connection Block is a branch sleeve, the one end is fixedly installed on the SRC post reinforcing bar, the other end is provided with threaded mounting hole vertically, described continued access sleeve is actively socketed on the RC beam steel, be provided with locking mechanism between one end and the RC beam steel, the other end is provided with threaded connection hole, described spiro connecting piece one end is connected with described threaded mounting hole, the other end is connected with described threaded connection hole, described locking mechanism comprises the barrel that radially passes described continued access sleeve more than, and the trip bolt of conflicting with RC beam steel outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010272637 CN101949199A (en) | 2010-09-06 | 2010-09-06 | Connecting structure and method for SRC (Steel Reinforced Concrete) steel rib and RC (Reinforced Concrete) beam steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010272637 CN101949199A (en) | 2010-09-06 | 2010-09-06 | Connecting structure and method for SRC (Steel Reinforced Concrete) steel rib and RC (Reinforced Concrete) beam steel |
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| CN101949199A true CN101949199A (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010272637 Pending CN101949199A (en) | 2010-09-06 | 2010-09-06 | Connecting structure and method for SRC (Steel Reinforced Concrete) steel rib and RC (Reinforced Concrete) beam steel |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775526A (en) * | 2015-04-08 | 2015-07-15 | 南通四建集团有限公司 | Novel method for connecting steel bar and section steel column connector |
| CN106088322A (en) * | 2016-06-12 | 2016-11-09 | 中国十七冶集团有限公司 | A kind of high-rise steel structure spigot-and-socket concrete reinforcement attachment means and construction method |
| CN107044193A (en) * | 2017-04-26 | 2017-08-15 | 上海核工程研究设计院 | A kind of pair of sleeve steel concrete supporting device |
| CN107083806A (en) * | 2017-06-13 | 2017-08-22 | 林再颐 | A kind of cantilever beam support structure |
| CN109322445A (en) * | 2018-11-24 | 2019-02-12 | 彭昊 | A kind of steel bar connecting structure |
| CN109457874A (en) * | 2018-12-13 | 2019-03-12 | 中建八局轨道交通建设有限公司 | Bar-spacing set control device |
| CN109680880A (en) * | 2019-02-23 | 2019-04-26 | 江苏精享裕建工有限公司 | A kind of structure and method connecting reinforcing bar and steel column connector |
| CN109853854A (en) * | 2018-11-26 | 2019-06-07 | 南京兴华建筑设计研究院股份有限公司 | Movable beam stress indulges muscle piecing devices |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775526A (en) * | 2015-04-08 | 2015-07-15 | 南通四建集团有限公司 | Novel method for connecting steel bar and section steel column connector |
| CN106088322A (en) * | 2016-06-12 | 2016-11-09 | 中国十七冶集团有限公司 | A kind of high-rise steel structure spigot-and-socket concrete reinforcement attachment means and construction method |
| CN107044193A (en) * | 2017-04-26 | 2017-08-15 | 上海核工程研究设计院 | A kind of pair of sleeve steel concrete supporting device |
| CN107083806A (en) * | 2017-06-13 | 2017-08-22 | 林再颐 | A kind of cantilever beam support structure |
| CN109322445A (en) * | 2018-11-24 | 2019-02-12 | 彭昊 | A kind of steel bar connecting structure |
| CN109853854A (en) * | 2018-11-26 | 2019-06-07 | 南京兴华建筑设计研究院股份有限公司 | Movable beam stress indulges muscle piecing devices |
| CN109457874A (en) * | 2018-12-13 | 2019-03-12 | 中建八局轨道交通建设有限公司 | Bar-spacing set control device |
| CN109457874B (en) * | 2018-12-13 | 2024-03-15 | 中建八局轨道交通建设有限公司 | Steel bar row spacing control device |
| CN109680880A (en) * | 2019-02-23 | 2019-04-26 | 江苏精享裕建工有限公司 | A kind of structure and method connecting reinforcing bar and steel column connector |
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Application publication date: 20110119 |