CN103437425A - Connecting joint of prefabricated hollow steel-reinforced concrete column and steel beam and construction method - Google Patents
Connecting joint of prefabricated hollow steel-reinforced concrete column and steel beam and construction method Download PDFInfo
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- CN103437425A CN103437425A CN2013103767646A CN201310376764A CN103437425A CN 103437425 A CN103437425 A CN 103437425A CN 2013103767646 A CN2013103767646 A CN 2013103767646A CN 201310376764 A CN201310376764 A CN 201310376764A CN 103437425 A CN103437425 A CN 103437425A
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Abstract
The invention discloses a connecting joint of a prefabricated hollow steel-reinforced concrete column and a steel beam and a construction method. The connecting joint comprises the prefabricated hollow steel-reinforced concrete column, the H-type steel beam, a horizontal connecting disc and a connecting piece. In the construction process, the horizontal connecting disc and the connecting piece are attached to a central steel tube to be manufactured with the hollow steel-reinforced concrete column in a factory, and prefabricated hollow steel-reinforced concrete column splicing and steel beam installation are carried out at the construction site. The connecting joint is simple in structure and reliable in force transmission. The steel beam and the hollow steel-reinforced concrete column are manufactured in the factory, therefore, the operation condition can be improved, and the quality is easily guaranteed. The construction method for connecting the steel beam with the prefabricated hollow steel-reinforced concrete column is easy and convenient to achieve, and influences of installation errors on stress in a joint area are fewer. After concrete is poured, two materials including steel and the concrete are mutually limited and jointly stressed, and the improvements of the bearing capacity, the rigidity and the ductility of the joint are facilitated.
Description
Technical field
The invention belongs to building engineering field, be specifically related to connected node and the job practices of a kind of prefabricated hollow type steel concrete column and girder steel.
Background technology
Steel reinforced concrete is applied very extensive in engineering as a kind of composite material, it has brought into play composition material advantage separately cleverly, has good techno-economic effect.Be subject to the impact of the intrinsic mechanical characteristic of concrete, steel reinforced concrete is applied to axial compression or eccentric compression member especially can be brought into play its advantage, and while being applied to flexural member, its superiority weakens to some extent, and girder steel remains the optimal selection of flexural member.For giving full play to the performance of material, build more reasonable, economic building structure, the combination construction of profile steel concrete column and girder steel has appearred adopting.No matter in which type of structure, the connected node between various members is vital ingredient in total, and the deformation and internal force of the performance impact total of node distributes, thereby the destruction of node can cause bringing on a disaster property of the disintegration consequence of structure.So, the research of node is occupied to important one seat all the time in building structure field.
Hollow type steel concrete column and similar Concrete-filled Double Skin Steel Tube Columns or steel tube concrete superposed column are the new structure forms just occurred in recent years, the common feature of these coupled columns is that the elongated Steel section member that is positioned at kernel of section is arranged, and the connected mode of more existing coupled columns and girder steel still has some deficits.The patent of invention (application number 201210138408.6) that Liao Feiyu has applied for " panel constraint formula steel tube concrete superposed column-steel beam connecting joint and job practices " by name, this invention is by arranging constraint panel raising ductility of joint at beam and post joint cores, the edge of a wing of beam directly is connected with interior steel pipe, guarantees the internal force reliable delivery.The girder steel edge of a wing and interior steel pipe to be connected difficulty larger, when especially the girder steel edge of a wing is wider in steel pipe need, through the girder steel edge of a wing, implement difficulty very large.For the structure that adopts prefabrication and assembly construction, the beam that this invention provides and post connected mode are also inapplicable, and steel containment surfaces plate steel quantity consumption is large, and it is limited that ductility of joint improves effect.Han Linhai etc. have applied for the patent of invention (application number 200910090795.9) of " adopting the Concrete-filled Double Skin Steel Tube Columns-steel beam joint of unidirectional fastening bolt " by name, this invention is connected girder steel with end board assembly by bolt with post, requirement is prepared screw-bolt hole on post jamb, and the required precision of making and installing is high.In coupled column, the space size of steel pipe is limited, and one-way bolt is very difficult through inside and outside steel pipe, and even not possible, this is that this invents maximum deficiency." a kind of steel joint precast and assembled reinforced concrete frame structure " patent of invention (application number 201010150967.X) of Wu Lei application provides a kind of steel node that connects precast concrete beam and precast concrete column, this node type of attachment is complicated, consumption of materials is large, and discontinuous easily in the beyond thought result of stressed middle generation at Nodes of construction material.He Wenhui etc. have applied for the patent of invention (application number 201010237437.9) of " connected node of hollow steel pipe concrete column and girder steel and job practices thereof " by name, this invention adopts end plate to be connected with post with the split bolt girder steel that the post both sides are relative, can avoid the weld job of job site.This invention still has following deficiency: one, and because the girder steel of post both sides connects with same group of bolt, bolt failure can cause the continuous destruction of structure; Its two, be limited to the sectional dimension of post, be difficult to arrange that abundant bolt reaches total cross-section plasticity to guarantee beam-ends, can not take full advantage of the strength of materials of girder steel; Its three, in practical application, on orthogonal both direction, all need to arrange girder steel and keep the back absolute altitude identical, will produce the mutual collision conflict of bolt on both direction.Guo Ming etc. have applied for the utility model patent (application number 201220230419.2) of " beam-column node structure of compound cross-section steel core concrete column and girder steel " by name, the node that this utility model proposes exists bolt to be not easy the problem of installing equally, simultaneously, girder steel makes to be subject to tension and compression outside outer steel pipe walls plane, and the rigidity of node and intensity can't guarantee.
Summary of the invention
The object of the invention is to overcome the shortcoming of above-mentioned prior art, connected node and the job practices of a kind of prefabricated hollow type steel concrete column and girder steel are provided, this connected node and job practices can effectively guarantee rigidity and the intensity of connected node, connected node is simple in structure simultaneously, constructability.
For achieving the above object, the connected node of prefabricated hollow type steel concrete column of the present invention and girder steel, comprise prefabricated hollow type steel concrete column, connector, H section steel beam and two level connection joint dishes;
Described prefabricated hollow type steel concrete column comprises concrete, center steel pipe, vertically is distributed in longitudinal reinforcement and the stirrup of colligation on longitudinal reinforcement around the steel pipe of center; Center steel pipe, longitudinal reinforcement and stirrup all are wrapped in concrete Nei， center steel pipe and longitudinal reinforcement passes the level connection joint dish, and stirrup is through connector;
The girder steel edge of a wing that described H section steel beam comprises steel beam web plate and is located at the upper and lower two ends of steel beam web plate, weld with the outer wall of corresponding level connection joint dish on the girder steel edge of a wing;
The outer wall welding of the Yi Duanyu center steel pipe of described connector, the other end is connected with steel beam web plate.
Described level connection joint dish is provided with centre bore and longitudinal reinforcement hole, and the outside of level connection joint dish is provided with the steel plate hoop with the welding of the girder steel edge of a wing, and the center steel pipe is through centre bore, and longitudinal reinforcement is through the longitudinal reinforcement hole.
The connector edge of a wing that described connector is provided with the connector web and is connected with the end face of connector web one side, the end face of connector web opposite side and the welding of the outer wall of center steel pipe, the connector web is provided with the stirrup hole, and stirrup is through the stirrup hole.
Described H section steel beam also comprises the steel beam web plate junction plate, an end of steel beam web plate junction plate and the welding of the connector edge of a wing, and the other end is connected with steel beam web plate.
Described steel beam web plate junction plate and steel beam web plate are all offered porose, and the hole on the steel beam web plate junction plate is connected by bolt with the hole on steel beam web plate.
Radially be welded with some shear connectors on the outer wall of described center steel pipe, shear connector is wrapped in concrete.
The thickness of described level connection joint dish is more than or equal to the thickness on the coupled girder steel edge of a wing.
The thickness of described connector web is more than or equal to the thickness of steel beam web plate.
Described H section steel beam is Rolled H-section beam or welded H section steel beam.
Accordingly, the present invention also provides the job practices of the connected node of a kind of prefabricated hollow type steel concrete column and girder steel, comprises the following steps:
1) go out ，Bing Jiang center, the welding position steel pipe of two level connection joint dishes through level connection joint dish, the then temporary fixed level connection joint dish in the welding position of having marked in advance at center steel pipe subscript;
2) mark the welding position of connector according to the installation site of H section steel beam on center steel pipe and level connection joint dish, then connector, center steel pipe and level connection joint dish are fitted together to rear welding;
The center steel pipe level that 3) will be welded with level connection joint dish and connector is placed in the placed around longitudinal reinforcement of ，Zai Wang center steel pipe on the platform film, makes longitudinal reinforcement pass the level connection joint dish, and then on longitudinal reinforcement the colligation stirrup, make stirrup pass connector;
4), at center steel pipe installation form under level, then concreting in template, form prefabricated hollow type steel concrete column;
5) transport the prefabricated hollow type steel concrete column prepared to construction site, then on connector welded steel beam web junction plate;
6) lifting H section steel beam, be connected steel beam web plate with the steel beam web plate junction plate, then the level connection joint dish of the girder steel edge of a wing of H section steel beam and correspondence position welded.
The present invention has following beneficial effect:
The present invention is by the centre bore on the level connection joint dish and the socket of central steel pipe, and by end face and the center steel-pipe welding of connector one side, and then by H section steel beam and level connection joint dish and connector welding, thereby can effectively by level connection joint dish and connector, the internal force of H section steel beam end be directly delivered on the center steel pipe of prefabricated hollow type steel concrete column, there are the reliable characteristics of power transmission.
In work progress, the making of level connection joint dish and connector and all can carrying out in factory with the welding of center steel pipe, can improve workman's operating condition, thereby be easy to guarantee to make quality.The H section steel beam adopts the bolt weldering to mix type of attachment with the joint connection in site of prefabricated hollow type steel concrete column, thereby has effectively reduced the difficulty of construction.It is comparatively loose that the application of connector and steel plate hoop requires the installation accuracy of girder steel, is unlikely to cause because of small alignment error the sharply variation of Path of Force Transfer upper stress; When supplying respectively longitudinal reinforcement and stirrup to pass through, longitudinal reinforcement hole and stirrup hole provide mobile passage for concreting, after concreting, can make this bi-material of Steel concrete effectively be combined as a whole, constrained each other at the node area Steel concrete, jointly stressed, very favourable to bearing capacity, rigidity and the ductility that improves node.
The accompanying drawing explanation
The structural representation that Fig. 1 is prefabricated hollow type steel concrete column 1 cross section in the present invention;
The structural representation that Fig. 2 is level connection joint dish 3 in the present invention;
The structural representation that Fig. 3 is connector 4 in the present invention;
Fig. 4 is the structural representation that the center steel pipe 11 of level connection joint dish 3 and connector 4 is installed in the present invention;
Fig. 5 is the structural representation before concreting 14 in the present invention;
The structural representation that Fig. 6 is embodiment mono-;
Fig. 7 is the structural representation that in embodiment mono-, prefabricated hollow type steel concrete column 1 is connected with steel beam web plate junction plate 24;
The structural representation that Fig. 8 is embodiment bis-;
The structural representation that Fig. 9 is embodiment tri-;
The structural representation that Figure 10 is embodiment tetra-;
Wherein, 1 is that prefabricated hollow type steel concrete column, 2 is that H section steel beam, 3 is that level connection joint dish, 4 is that steel pipe centered by connector, 11,12 is that longitudinal reinforcement, 13 is that stirrup, 14 is that concrete, 15 is that shear connector, 21 is that the girder steel, 22 that depth of section is higher is that the girder steel, 23 that depth of section is lower is that non-uniform beam section, 24 is that hole centered by steel beam web plate junction plate, 31,32 is that steel plate hoop, 33 is that longitudinal reinforcement hole, 41 is that the connector edge of a wing, 42 is that connector web, 43 is the stirrup hole.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
With reference to figure 1, Fig. 2 and Fig. 3, the connected node of prefabricated hollow type steel concrete column of the present invention and girder steel comprises prefabricated hollow type steel concrete column 1, H section steel beam 2, connector 4 and two level connection joint dishes 3; Described H section steel beam 2 is Rolled H-section beam or welded H section steel beam.
Described prefabricated hollow type steel concrete column 1 comprises that concrete 14, center steel pipe 11, the longitudinal reinforcement 12 and stirrup 13， center steel pipe 11, longitudinal reinforcement 12 and the stirrup 13 of colligation on longitudinal reinforcement 12 that vertically are distributed in around center steel pipe 11 all are wrapped in concrete 14.In addition, radially be welded with some shear connectors 15 on the outer wall of described center steel pipe 11, shear connector 15 also is wrapped in concrete 14.
Described level connection joint dish 3 is provided with centre bore 31 and longitudinal reinforcement hole 33, the outside of level connection joint dish 3 is provided with steel plate hoop 32, center steel pipe 11 is through described centre bore 31, longitudinal reinforcement 12 is through described longitudinal reinforcement hole 33, and the diameter in described longitudinal reinforcement hole 33 is at least than the large 10mm of the diameter of longitudinal reinforcement 12.
The connector edge of a wing 41 that described connector 4 is provided with connector web 42 and is connected with the end face of connector web 42 1 sides, the end face of connector web 42 opposite sides and the welding of the outer wall of center steel pipe 11, connector web 42 is provided with stirrup hole 43, stirrup 13 is through described stirrup hole 43, and the diameter in stirrup hole 43 is more than or equal to 50mm.
The girder steel edge of a wing that described H section steel beam 2 is provided with steel beam web plate junction plate 24, steel beam web plate and is located at the upper and lower two ends of steel beam web plate, the thickness of described level connection joint dish 3 is more than or equal to the thickness on the coupled girder steel edge of a wing, the thickness of described connector web 42 is more than or equal to the thickness of steel beam web plate, one end of steel beam web plate junction plate 24 and 41 welding of the connector edge of a wing, the other end is connected with steel beam web plate, the girder steel edge of a wing at steel beam web plate two ends and steel plate hoop 32 welding.Preferably, steel beam web plate junction plate 24 and steel beam web plate are all offered porose, and the hole on steel beam web plate junction plate 24 is connected by bolt with the hole on steel beam web plate.
Embodiment mono-
With reference to figure 6 and Fig. 7, the depth of section of the described H section steel beam 2 be connected with prefabricated hollow type steel concrete column 1 is all identical.
Embodiment bis-
With reference to figure 8, the H section steel beam 2 connected from prefabricated hollow type steel concrete column 1 has different depth of beams on both direction, comprise respectively girder steel 21 girder steel 22 lower with depth of section that depth of section is higher, and the girder steel 22 that the girder steel 21 that depth of section is higher and depth of section are lower is distributed on mutually orthogonal both direction, use the girder steel 22 that non-uniform beam section 23 is lower by depth of section to couple together with prefabricated hollow type steel concrete column 1.Before prefabricated hollow type steel concrete column 1 dispatches from the factory, welding non-uniform beam section 23 in factory.
Embodiment tri-
With reference to figure 9, prefabricated hollow type steel concrete column 1 is positioned at the edge of building, does not connect H section steel beam 2 on one of them direction, and other structures and job practices are identical with embodiment mono-or embodiment bis-.
Embodiment tetra-
With reference to Figure 10, prefabricated hollow type steel concrete column 1 is positioned at the bight of building, wherein only has both direction to connect girder steel, and other structures and job practices are identical with embodiment mono-or embodiment bis-.
Be more than exemplary embodiments of the present invention, should be appreciated that and can be changed and change aforesaid all parts, but do not depart from the spirit and scope of the present invention.
With reference to figure 4 and Fig. 5, the job practices of the connected node of prefabricated hollow type steel concrete column of the present invention and girder steel comprises the following steps:
1) mark ，Bing Jiang center, the welding position steel pipe 11 of two level connection joint dishes 3 through level connection joint dish 3, the then temporary fixed level connection joint dish 3 in the welding position of having marked in advance on center steel pipe 11;
2) mark the welding position of connector 4 according to the installation site of H section steel beam 2 on center steel pipe 11 and level connection joint dish 3, then connector 4, center steel pipe 11 and level connection joint dish 3 are fitted together to rear welding;
4), at center steel pipe 11 installation form under level, then concreting 14 in template, form prefabricated hollow type steel concrete column 1;
5) transport the prefabricated hollow type steel concrete column 1 prepared to construction site, then on connector 4 welded steel beam web junction plate 24;
6) lifting H section steel beam 2, be connected steel beam web plate with steel beam web plate junction plate 24, then by 3 welding of the level connection joint dish of the girder steel edge of a wing of H section steel beam 2 and correspondence position.
In work progress, the making of level connection joint dish 3 and connector 4 and all can carrying out in factory with the welding of center steel pipe 11, H section steel beam 2 adopts the bolt weldering to mix type of attachment with the joint connection in site of prefabricated hollow type steel concrete column 1, thereby has effectively reduced the difficulty of construction; When supplying respectively longitudinal reinforcement 12 and stirrup 13 to pass, longitudinal reinforcement hole 33 and stirrup hole 43 can think that concreting 14 provides mobile passage.
Claims (10)
1. the connected node of a prefabricated hollow type steel concrete column and girder steel, is characterized in that, comprises prefabricated hollow type steel concrete column (1), connector (4), H section steel beam (2) and two level connection joint dishes (3);
Described prefabricated hollow type steel concrete column (1) comprises concrete (14), center steel pipe (11), vertically is distributed in center steel pipe (11) longitudinal reinforcement (12) and the stirrup (13) of colligation on longitudinal reinforcement (12) on every side; Center steel pipe (11), longitudinal reinforcement (12) and stirrup (13) all are wrapped in concrete (14), center steel pipe (11) and longitudinal reinforcement (12) are through level connection joint dish (3), and stirrup (13) is through connector (4);
The girder steel edge of a wing that described H section steel beam (2) comprises steel beam web plate and is located at the upper and lower two ends of steel beam web plate, weld with the outer wall of corresponding level connection joint dish (3) on the girder steel edge of a wing;
The outer wall welding of the Yi Duanyu center steel pipe (11) of described connector (4), the other end is connected with steel beam web plate.
2. the connected node of prefabricated hollow type steel concrete column according to claim 1 and girder steel, it is characterized in that, described level connection joint dish (3) is provided with centre bore (31) and longitudinal reinforcement hole (33), the outside of level connection joint dish (3) is provided with the steel plate hoop (32) with the welding of the girder steel edge of a wing, center steel pipe (11) is through centre bore (31), and longitudinal reinforcement (12) is through longitudinal reinforcement hole (33).
3. the connected node of prefabricated hollow type steel concrete column according to claim 1 and girder steel, it is characterized in that, the connector edge of a wing (41) that described connector (4) is provided with connector web (42) and is connected with the end face of connector web (42) one sides, the end face of connector web (42) opposite side and the welding of the outer wall of center steel pipe (11), connector web (42) is provided with stirrup hole (43), and stirrup (13) is through stirrup hole (43).
4. the connected node of prefabricated hollow type steel concrete column according to claim 3 and girder steel, it is characterized in that, described H section steel beam (2) also comprises steel beam web plate junction plate (24), one end of steel beam web plate junction plate (24) and the connector edge of a wing (41) welding, the other end is connected with steel beam web plate.
5. the connected node of prefabricated hollow type steel concrete column according to claim 4 and girder steel, it is characterized in that, described steel beam web plate junction plate (24) and steel beam web plate are all offered porose, and the hole on steel beam web plate junction plate (24) is connected by bolt with the hole on steel beam web plate.
6. the connected node of prefabricated hollow type steel concrete column according to claim 1 and girder steel, it is characterized in that, radially be welded with some shear connectors (15) on the outer wall of described center steel pipe (11), shear connector (15) is wrapped in concrete (14).
7. the connected node of prefabricated hollow type steel concrete column according to claim 2 and girder steel, is characterized in that, the thickness of described level connection joint dish (3) is more than or equal to the thickness on the coupled girder steel edge of a wing.
8. the connected node of prefabricated hollow type steel concrete column according to claim 3 and girder steel, is characterized in that, the thickness of described connector web (42) is more than or equal to the thickness of steel beam web plate.
9. the connected node of prefabricated hollow type steel concrete column according to claim 1 and girder steel, is characterized in that, described H section steel beam (2) is Rolled H-section beam or welded H section steel beam.
10. the job practices of the connected node of a prefabricated hollow type steel concrete column and girder steel, the connected node based on prefabricated hollow type steel concrete column claimed in claim 4 and girder steel, is characterized in that, comprises the following steps:
1) mark ，Bing Jiang center, the welding position steel pipe (11) of two level connection joint dishes (3) through level connection joint dish (3), the then temporary fixed level connection joint dish (3) in the welding position of having marked in advance on center steel pipe (11);
2) mark the welding position of connector (4) according to the installation site of H section steel beam (2) on center steel pipe (11) and level connection joint dish (3), then connector (4), center steel pipe (11) and level connection joint dish (3) are fitted together to rear welding;
Center steel pipe (11) level that 3) will be welded with level connection joint dish (3) and connector (4) is placed on the platform film, the placed around longitudinal reinforcement (12) of Zai Wang center steel pipe (11), make longitudinal reinforcement (12) through level connection joint dish (3), and then, at the upper colligation stirrup (13) of longitudinal reinforcement (12), make stirrup (13) through connector (4);
4), at center steel pipe (11) installation form under level, then concreting (14) in template, form prefabricated hollow type steel concrete column (1);
5) transport the prefabricated hollow type steel concrete column (1) prepared to construction site, then at the upper welded steel beam web junction plate (24) of connector (4);
6) lifting H section steel beam (2), be connected steel beam web plate with steel beam web plate junction plate (24), then the level connection joint dish (3) of the girder steel edge of a wing of H section steel beam (2) and correspondence position welded.
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