CN204983309U - Joint construction of real abdomen formula steel case conversion roof beam and this conversion roof beam and reinforced concrete shear force wall - Google Patents

Abstract

The utility model discloses a solid-web steel box transfer beam and a connection structure between the transfer beam and a reinforced concrete shear wall. The solid-web steel box transfer beam includes a steel box girder and concrete, and the steel box girder has a top plate and a bottom plate. The tubular main body is connected with two webs, the top plate is provided with a set of partial openings corresponding to each span of the transfer beam, and the concrete pouring opening in each set of partial openings is set at the middle position of the corresponding span of the transfer beam , each group of partial openings is respectively provided with at least one exhaust hole within the range of the two negative bending moment regions of the corresponding span of the transfer beam. Compared with the closed steel box-concrete composite beam with no partial opening in the prior art, the conversion beam of the utility model can have the bending resistance performance, torsion resistance performance, vertical shear resistance performance and local stability performance of the front section. Under the premise, it greatly facilitates the pouring of concrete during the construction process and improves the pouring efficiency of concrete; it is also suitable for cantilever conversion and long-span conversion in high-rise buildings.

Description

A solid-web steel box transfer beam and the connection structure between the transfer beam and the reinforced concrete shear wall

technical field

The utility model relates to a solid-web steel box transfer beam and a connection structure between the transfer beam and a reinforced concrete shear wall.

Background technique

With the development of the national economy, the construction industry has put forward higher and higher requirements for building structures, which has promoted the continuous development of building structures in the direction of large-span, light weight, environmental protection, and multi-function. Traditional structures can no longer meet the requirements of modern building structures. Requirements, steel-concrete composite structures have been widely used in bridges, industrial plants, high-rise buildings, urban overpasses and other projects due to their high bearing capacity, light weight, small structure size, good seismic performance, and convenient construction. One of the important development directions of the structure.

Figure 1 shows a closed steel box-concrete composite beam that can be used as a transfer beam in the prior art. Connected tubular main body, the inner cavity of the tubular main body is provided with a plurality of transverse partitions 4 distributed along the axial direction of the tubular main body, each transverse partition 4 is provided with a concrete flow hole 4a, and the transverse partition 4. The arrangement quantity and spacing distance shall be set according to the regulations on stiffeners in Section 4.3 of GB50017 of the code for design of steel structures. Concrete 9 is filled in the inner cavity of the tubular body, and the outer walls of the two webs 3 are provided with upper longitudinal stiffeners 5, lower longitudinal stiffeners 6, and each transverse partition 4 is provided with a transverse stiffener 7 , the upper longitudinal stiffener 5 and the lower longitudinal stiffener 6 extend along the axial direction of the tubular main body, and each transverse stiffener 7 is arranged between the upper longitudinal stiffener 5 and the lower longitudinal stiffener 6 . Since the box chamber is filled with concrete, this kind of composite beam greatly improves the local buckling strength of the steel plate in the compression zone, which is conducive to the full play of the steel strength, relatively large rigidity, and better ductility. Warpage and distortion are constrained, making the structure more torsional than other forms of cross-section.

But above-mentioned existing closed steel box-concrete composite beam still has the following deficiencies as a transfer beam:

First, in order to avoid the influence of too large and too many concrete pouring holes on the stiffness and shear bearing capacity of the transfer beam, in the prior art, the above-mentioned composite beam only needs to open 1 to 2 concrete pouring holes on the roof DINGBAN. Concrete is poured into the inner cavity NQ of the steel box girder GXL, which makes the concrete pouring process more troublesome, and it is easy to cause the problem that the inner cavity NQ of the steel box girder GXL is not completely filled by the concrete HNT;

Second, the steel box girder GXL components of the above-mentioned composite beams use a lot of steel and have a relatively large dead weight. Therefore, the above-mentioned composite beams are difficult to apply to the cantilever conversion and long-span conversion in high-rise buildings, and it will also increase the cost of the superstructure of the building , The load on the foundation increases, and the overall cost of the building increases;

Third, for the case where a reinforced concrete shear wall is installed above the transfer beam, the steel box girder GXL of the above-mentioned composite beam needs special structural treatment to ensure the reliability of the connection with the reinforced concrete shear wall, and the connection cost is relatively high. High, complex construction.

Utility model content

The technical problem to be solved by the utility model is to provide a solid-web steel box transfer beam and a connection structure between the transfer beam and a reinforced concrete shear wall.

To solve the problems of the technologies described above, the technical solution adopted in the utility model is as follows:

A solid-web type steel box transfer beam, comprising a steel box girder and concrete, the steel box girder has a tubular main body connected by a top plate, a bottom plate and two web plates, and the inner cavity of the tubular main body is provided with A plurality of transverse partitions distributed along the axial direction of the tubular main body, each transverse partition is provided with a concrete flow hole, the concrete is filled in the inner cavity of the tubular main body, and the outer walls of the two webs are There are upper longitudinal stiffeners, lower longitudinal stiffeners and a transverse stiffener corresponding to each of the transverse partitions, the upper longitudinal stiffeners and the lower longitudinal stiffeners extend along the axial direction of the tubular main body, and each transverse stiffener The ribs are arranged between the upper longitudinal stiffener and the lower longitudinal stiffener, and it is characterized in that: the top plate is provided with a set of partial openings corresponding to each span of the transfer beam, and each set of partial openings includes a concrete pouring and at least two air vents; the concrete pouring openings in each group of partial openings are set at the middle position of the corresponding span of the transition beam, and the maximum length of the concrete pouring openings is set when the top plate is located at the The conversion beam corresponds to the length within the span range to between, the maximum width is set at the width of the top plate to between; each group of local openings is respectively provided with at least one exhaust hole within the range of the two negative bending moment regions corresponding to the span of the transfer beam, and each exhaust hole is located in two adjacent blocks above the space between the transverse partitions.

In order to improve the pouring quality of the concrete filled in the inner cavity of the steel box girder, as an improvement of the utility model, the transverse partition is also provided with four concrete circulation gaps, and the four concrete circulation gaps are respectively located at the four corners of the transverse partition position, the concrete flow hole is located at the center of the transverse partition.

As a preferred embodiment of the diaphragm, the concrete circulation hole is a special-shaped hole composed of a rectangular middle part, a semicircular upper part and a semicircular lower part, and the concrete circulation gap is a fan-shaped gap.

In order to improve the flexural bearing capacity of the steel box girder and improve the stability of the web, two intermediate longitudinal stiffeners are added on the outer walls of the two webs; each intermediate longitudinal stiffener is along the tubular body The axial extension of the two middle longitudinal stiffeners on the same web is evenly spaced between the upper longitudinal stiffener and the lower longitudinal stiffener on the web.

As a preferred embodiment of the present invention, a longitudinal partition is provided in the inner cavity of the tubular body, and the longitudinal partition extends along the axial direction of the tubular main body and divides the inner cavity of the tubular main body. It is divided into an upper chamber and a lower chamber; the concrete flow hole is located in the upper chamber, the concrete is filled in the upper chamber, and there is no concrete filling in the lower chamber.

In order to improve the pouring quality of the concrete filled in the upper box chamber, as an improvement of the utility model, the transverse partition is also provided with four concrete circulation gaps, and the four concrete circulation gaps are respectively arranged on the upper box of the transverse partition. The four corner positions of the indoor part.

In order to avoid stress concentration, as a preferred embodiment of the concrete pouring port, the concrete pouring port is a special-shaped opening composed of a rectangular middle part, a semicircular front part and a semicircular rear part.

In order to avoid stress concentration, as a preferred embodiment of the vent hole, the vent hole is a circular opening.

In the case where a reinforced concrete shear wall is provided above the transfer beam, two steel plates for connecting the reinforced concrete shear wall are provided on the upper end of the top plate outside the concrete pouring opening, and the two steel plates All extend along the axial direction of the tubular body.

A connection structure between a transfer beam and a reinforced concrete shear wall, comprising a transfer beam and a reinforced concrete shear wall arranged on the transfer beam, characterized in that: the transfer beam is a solid-web steel box transfer beam; Among the two rows of steel bars of the reinforced concrete shear wall, the lower ends of the steel bars located within the concrete pouring port of the solid-web steel box transfer beam extend from the concrete pouring port into the inner cavity of the tubular main body and are anchored in the The lower ends of the steel bars in the concrete outside the range of the concrete pouring port of the solid-web steel box transfer beam are respectively welded and fixed to the two steel plates of the solid-web steel box transfer beam.

Compared with the prior art, the utility model has the following beneficial effects:

First, referring to Fig. 2 to Fig. 7, the utility model is provided with a group of local openings including a concrete pouring port 1a and at least two exhaust holes 1b through each span corresponding to the transfer beam on the top plate 1 of the steel box girder. The concrete pouring opening 1a is set at the middle position of the corresponding span of the transfer beam, and each group of partial openings is respectively provided with at least one exhaust hole 1b within the range of the two negative bending moment regions of the corresponding span of the transfer beam, so that , for the transfer layer using the solid web steel box transfer beam, after the steel box girder welding construction is completed, the concrete 9 can be poured into the inner cavity a of the steel box girder from each concrete pouring port 1a on the roof 1 , and the concrete 9 can flow to both ends of each span of the transfer beam through the concrete flow holes 4a on each transverse partition 4 after entering from the concrete pouring port 1a, and, during the flow of the concrete 9, the inner cavity of the steel box girder The air in a is discharged out of the steel box girder through each exhaust hole 1b on the roof 1, so that the concrete 9 can quickly complete the filling of the inner cavity a of the steel box girder, which greatly facilitates the concrete 9 in the construction process. Watering, improve the pouring efficiency of concrete;

The utility model sets the distribution mode of the local opening as follows: each concrete pouring opening 1a is located in the middle of the corresponding span of the transfer beam and the maximum length L1 is set at the length L2 of the top plate 1 located in the range of the corresponding span of the transfer beam. to Between, the maximum width W1 is set at the top plate 1 width W2 to Between them, each exhaust hole 1b is set within the range of the negative bending moment area and above the interval space between two adjacent transverse partitions 4. Through such a distribution method, the impact of the partial opening on the steel can be minimized. The adverse effect caused by the bearing capacity of the box girder ensures the feasibility of improving the efficiency of concrete pouring by opening partial openings; after the finite element calculation of the solid web steel box transfer beam and the existing closed steel box-concrete composite beam Analysis and comparison show that the above-mentioned partial exposure has little influence on the bearing capacity of the solid-web steel box transfer beam, and the bending performance, torsional performance, vertical shear performance and local stability of the solid-web steel box transfer beam of the solid-web steel box transfer beam Compared with the closed steel box-concrete composite beam without partial opening in the prior art, it is not lowered;

Since the utility model provides a plurality of large-area concrete pouring openings 1a on the roof 1 of the steel box girder, the area of the local opening is enlarged as much as possible without affecting the bearing capacity of the steel box girder, and the steel box girder is significantly reduced. The amount of steel used and the self-weight of the beam not only save materials and labor, but also reduce the cost of the upper structure of the building, reduce the load of the foundation, and further reduce the overall cost of the building; Therefore, this solid-web steel box transfer beam is suitable for cantilever transfer and long-span transfer in high-rise buildings, and can ensure the feasibility of setting transfer floors in high-rise buildings;

To sum up, the solid-web steel box transfer beam of the utility model can improve the bending resistance, torsional performance, vertical shear performance and local stability performance of the front section compared with the non-partially exposed beam in the prior art. Under the premise that the closed steel box-concrete composite beam is not lowered, it greatly facilitates the pouring of concrete 9 in the construction process and improves the pouring efficiency of concrete; Cantilever conversion and long-span conversion in the middle.

Second, referring to Fig. 7, the utility model is provided with the center of the transverse partition 4 by the larger concrete circulation hole 4a, and the concrete circulation gap 4b is set at the four corners of the transverse partition 4, which further promotes concrete 9 The fluidity in the inner cavity a of the steel box girder effectively prevents the small amount of air in the inner cavity a of the steel box girder from being discharged out of the steel box girder through the vent hole 1b during the pouring of the concrete 9, so that the steel box The pouring quality of the filled concrete 9 in the beam inner cavity a is guaranteed.

Third, referring to Fig. 4, the utility model is provided with two middle longitudinal stiffeners 8 on the outer walls of the two solid webs 3, so that the two middle longitudinal stiffeners 8 on each side can be aligned with the upper longitudinal stiffeners. The stiffeners 5 and the lower longitudinal stiffeners 6 work together to improve the bending capacity of the steel box girder and the stability of the web 3, and facilitate the flexibility of the location of the transfer floor, increasing the number of transferable floors.

Fourthly, referring to Fig. 8-1 to Fig. 8-3, the utility model divides the inner chamber a of the steel box girder into an upper chamber a1 and a lower chamber a2 by using a longitudinal partition 10, and fills the upper chamber with concrete 9 In the box room a1, when the solid-web steel box conversion beam is subjected to the bending moment, the upper box room a1 is subjected to the pressure by the filled concrete 9, and the lower box room a2 is subjected to the tensile force by the steel material, so that the solid-web steel box Compared with the empty box girder, the steel plate in the compression zone is more stable due to the concrete filling in the box chamber in the compression zone. Compared with the fully filled steel box girder, the self-weight is reduced and the Possible concrete failure in the tension zone.

Fifth, referring to Fig. 9 to Fig. 11, the utility model applies the solid-web steel box transfer beam to the connection structure with the reinforced concrete shear wall, so that the two rows of steel bars of the reinforced concrete shear wall 11 are located in the solid web The lower end of the steel bar 12 within the range of the concrete pouring port 1a of the steel box transfer beam can extend from the concrete pouring port 1a into the inner cavity a of the tubular main body and be anchored in the concrete 9, located at the concrete pouring port 1a of the solid-web steel box transfer beam The lower ends of the steel bars 12 outside the range are respectively welded and fixed to the two steel plates 13 of the solid-web steel box transfer beam, thereby solving the problem of overlapping between the reinforced concrete shear wall 11 and the transfer beam, and adding the transfer beam and reinforced concrete The connection reliability of the shear wall 11.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

Fig. 1 is the cross-sectional structure schematic diagram of closed steel box-concrete composite beam in the prior art;

Fig. 2 is a schematic top view structure diagram with a perspective effect when the solid-web steel box transfer beam of the first embodiment of the utility model is applied to the transfer layer, and the figure shows four solid-web steel boxes applied to a transfer layer Transfer beam Z1～Z4;

Fig. 3 is A-A sectional view of Fig. 2;

Fig. 4 is a schematic diagram of the three-dimensional structure of the solid-web steel box transfer beam in the first embodiment of the present invention located between the positions B1 and B2 in Fig. 2;

Fig. 5 is a schematic diagram of the cross-sectional structure of the solid-web steel box transfer beam at the position B1 in Fig. 2 according to Embodiment 1 of the utility model;

Fig. 6 is a schematic diagram of the cross-sectional structure of the solid-web steel box transfer beam in the position C of Fig. 2 according to Embodiment 1 of the utility model;

Fig. 7 is a schematic diagram of the cross-sectional structure of the solid-web steel box transfer beam in the position D of Fig. 2 according to Embodiment 1 of the utility model;

Fig. 8-1 is a schematic diagram of the cross-sectional structure corresponding to the position B1 in Fig. 2 of the solid-web steel box transfer beam according to the second embodiment of the utility model;

Fig. 8-2 is a schematic diagram of the cross-sectional structure corresponding to the position C in Fig. 2 of the solid-web steel box transfer beam according to the second embodiment of the utility model;

Fig. 8-3 is a schematic diagram of the cross-sectional structure corresponding to the position D in Fig. 2 of the solid-web steel box transfer beam according to the second embodiment of the utility model;

Fig. 9 is a top view structural diagram of the connection structure between the transfer beam and the reinforced concrete shear wall in the third embodiment of the utility model;

Fig. 10 is the E-E sectional view of Fig. 9;

FIG. 11 is a sectional view taken along line F-F of FIG. 9 .

detailed description

Embodiment one

As shown in Fig. 2 to Fig. 7, the solid-web steel box transfer girder according to Embodiment 1 of the utility model includes a steel box girder and concrete 9 . Among them, Fig. 2 shows four solid-web steel box transfer beams Z1~Z4 applied in a certain transfer layer, the two adjacent supports J1, J2 of the solid-web steel box transfer beam Z1, and the solid web The two supports J3 and J4 adjacent to the steel box transfer beam Z2, among which, the support J1 is the beam-column node between the solid-web steel box transfer beam Z1 and the structural column G1, and the support J2 is the solid-web steel box conversion Beam-column connection between beam Z1 and structural column G2.

The above-mentioned steel box girder has a tubular main body connected by a top plate 1, a bottom plate 2, and two webs 3. The inner cavity a of the tubular main body is provided with a plurality of transverse partitions 4 distributed along the axial direction of the tubular main body. , the layout quantity and spacing distance of the transverse partitions 4 shall be set according to the regulations on stiffeners in section 4.3 of the steel structure design specification GB50017. The outer walls of the two webs 3 are provided with an upper longitudinal stiffener 5, two middle longitudinal stiffeners 8, a lower longitudinal stiffener 6, and a transverse stiffener 7 corresponding to each transverse partition 4, and the upper longitudinal stiffener 5 and the lower longitudinal stiffener 6 extend along the axial direction of the tubular main body, each transverse stiffener 7 is arranged between the upper longitudinal stiffener 5 and the lower longitudinal stiffener 6, and each middle longitudinal stiffener 8 extends along the tube The axial extension of the shape main body, the two middle longitudinal stiffeners 8 on the same web 3 are evenly spaced between the upper longitudinal stiffeners 5 and the lower longitudinal stiffeners 6 on the web 3 .

The above-mentioned top plate 1 is provided with a group of partial openings corresponding to each span of the transfer beam, and each group of partial openings includes a concrete pouring opening 1a and at least two exhaust holes 1b, wherein a span of the transfer beam refers to Any part of it is located between two adjacent supports, such as the part of the solid-web steel box transfer beam Z1 located between the support J1 and the support J2 in Fig. The part between the seat J3 and the support J4. The concrete pouring opening 1a in each group of partial openings is set at the middle position of the corresponding span of the transition beam, and the maximum length L1 of the concrete pouring opening 1a is set at the length L2 of the top plate 1 within the range of the corresponding span of the transition beam. The maximum width W1 is set at the top plate 1 width W2 Among them, the length direction of the concrete pouring opening 1a and the roof 1 refers to the axial direction of the steel box girder, and the width direction is perpendicular to the axial direction of the steel box girder; the exhaust hole 1b is a circular opening, and each group of partial openings is At least one exhaust hole 1b is respectively provided within the two negative bending moment regions of the corresponding span of the transfer beam, and each exhaust hole is located above the space between two adjacent transverse partitions 4 .

Each of the above transverse partitions 4 is provided with a concrete circulation hole 4a and four concrete circulation gaps 4b, the concrete circulation hole 4a is located at the center of the transverse partition 4, which consists of a rectangular middle part, a semicircular upper part and a semicircular lower part. Concrete circulation gap 4b is a fan-shaped gap; the four concrete circulation gaps 4b are respectively located at the four corners of the transverse partition 4, which are special-shaped openings composed of a rectangular middle part, a semicircular front part and a semicircular rear part. mouth.

The above-mentioned concrete 9 is filled in the inner cavity a of the steel box girder through the concrete pouring opening 1a on each roof 1, the concrete flow hole 4a and the concrete flow gap 4b on each transverse partition 4, specifically: For the transfer layer of the webbed steel box transfer beam, after the welding construction of the steel box girder is completed, the concrete 9 is poured into the inner cavity a of the steel box girder from the concrete pouring ports 1a on the roof 1, and the concrete 9 is poured from the concrete After the pouring port 1a enters, it can flow to the two ends of each span of the transfer beam through the concrete flow hole 4a and the concrete flow gap 4b on each transverse partition 4, and, during the flow of the concrete 9, the inner cavity a of the steel box girder The air in the steel box girder is discharged out of the steel box girder through each exhaust hole 1b on the roof 1, so that the concrete 9 can quickly complete the filling of the inner cavity a of the steel box girder, which greatly facilitates the filling of the concrete 9 during the construction process. Watering, improve the pouring efficiency of concrete.

Moreover, in this embodiment one, the distribution mode of the partial opening is set as follows: each concrete pouring opening 1a is located at the middle position of the corresponding span of the transition beam and the maximum length L1 is set at the length L2 of the top plate 1 within the range of the corresponding span of the transition beam. The maximum width W1 is set at the top plate 1 width W2 Each exhaust hole 1b is set within the range of the negative bending moment area and above the space between two adjacent transverse partitions 4. Through such a distribution method, the impact of the partial opening on the steel box girder is minimized. The adverse effect caused by the bearing capacity ensures the feasibility of improving the efficiency of concrete pouring by opening partial openings; after the finite element calculation analysis and comparison of the solid web steel box transfer beam and the existing closed steel box-concrete composite beam, The above-mentioned partial exposure has little influence on the load-carrying capacity of the solid-web steel box transfer beam. Compared with In the prior art, the closed steel box-concrete composite beam with no partial opening is not lowered.

And because present embodiment one has offered a plurality of large-area concrete pouring openings 1a on the top plate 1 of steel box girder, under the premise of not affecting the load-carrying capacity of steel box girder, the area of partial opening has been enlarged as much as possible, and the The amount of steel used and the self-weight of the steel box girder are reduced, which not only saves materials and labor, but also reduces the cost of the upper structure of the building, reduces the load of the foundation, and further reduces the overall cost of the building; moreover, the solid-web steel box transfer beam can also With sufficient strength and bearing capacity, the solid-web steel box transfer beam is suitable for cantilever transfer and long-span transfer in high-rise buildings, and can ensure the feasibility of setting transfer floors in high-rise buildings.

Embodiment two

As shown in Figure 8-1 to Figure 8-3, the solid-web steel box transfer girder of the second embodiment of the utility model is basically the same as that of the first embodiment, and their difference is that in the second embodiment, the steel box girder tubular The inner cavity a of the main body is provided with a longitudinal partition 10, which extends along the axial direction of the tubular main body and divides the inner cavity a of the tubular main body into an upper chamber a1 and a lower chamber a2; the concrete flow hole 4a is located in the upper chamber a1, the concrete 9 is filled in the upper chamber a1, and there is no concrete filling in the lower chamber a2; the four concrete flow gaps 4b of the transverse partition 4 are respectively set in the transverse partition 4 located in the upper chamber a1 The four corner positions of the part inside. Through such setting, when the solid-web steel box transfer beam of the second embodiment is subjected to the bending moment, the upper box chamber a1 is subjected to the pressure by the filled concrete 9, and the lower box chamber a2 is subjected to the tensile force by the steel material. Compared with the empty box girder, the webbed steel box transfer beam has better stability of the steel plate in the compression zone due to the filling of concrete in the box chamber in the compression zone, and reduces the self-weight compared with the fully filled steel box girder , and avoid possible concrete damage in the tension zone.

Embodiment Three

As shown in Figures 9 to 11, the connection structure between the transfer beam and the reinforced concrete shear wall of the third embodiment of the utility model includes a transfer beam and a reinforced concrete shear wall 11 arranged on the transfer beam. Wherein, the transfer beam in the third embodiment adopts the solid-web steel box transfer beam, and the solid-web steel box transfer beam in the third embodiment is basically the same as the above-mentioned embodiment 1 or embodiment 2, except that: The solid-web steel box transfer beam in the third embodiment is provided with two steel plates 13 for connecting the reinforced concrete shear wall 11 on the upper end surface of the top plate 1 outside the concrete pouring opening 1a, and the two steel plates 13 are both Extends axially along the tubular body. Among the two rows of steel bars of the reinforced concrete shear wall 11 in the third embodiment, the lower ends of the steel bars 12 within the range of the concrete pouring port 1a of the solid-web steel box transfer beam all extend from the concrete pouring port 1a into the inner cavity a of the tubular main body. Inside and anchored in the concrete 9, the lower ends of the steel bars 12 outside the range of the concrete pouring port 1a of the solid-web steel box transfer beam are respectively welded and fixed to the two steel plates 13 of the solid-web steel box transfer beam.

In the third embodiment, the solid-web steel box transfer beam is applied to the connection structure with the reinforced concrete shear wall, so that the two rows of steel bars of the reinforced concrete shear wall 11 are located at the concrete pouring port 1a of the solid-web steel box transfer beam The lower ends of the steel bars 12 within the range can extend from the concrete pouring opening 1a into the inner cavity a of the tubular main body and be anchored in the concrete 9. The two steel plates 13 of the transfer beam of the solid-web steel box are welded and fixed, thereby solving the lap joint problem between the reinforced concrete shear wall 11 and the transfer beam, and increasing the connection reliability between the transfer beam and the reinforced concrete shear wall 11.

The utility model is not limited to the above-mentioned specific embodiments. According to the above content, according to the common technical knowledge and conventional means in this field, without departing from the above-mentioned basic technical idea of the utility model, the utility model can also be made into other various forms. The equivalent modifications, replacements or alterations all fall within the protection scope of the present utility model.

For example, after finite element calculation analysis and comparison between the solid-web steel box transfer beam and the existing closed steel box-concrete composite beam, the maximum length L1 of the concrete pouring opening 1a in the first embodiment can also be set at the top plate 1 at the conversion The beam corresponds to the length L2 of the span range to Between, the maximum width W1 can also be set at the top plate 1 width W2 to In this range, setting the size of the concrete pouring opening 1a can ensure the bending performance, torsional performance, vertical shear performance and local stability performance of the solid-web steel box transfer beam. The closed steel box-concrete composite beam without partial opening in the prior art is not lowered.

As another example, in the above-mentioned first embodiment, the middle longitudinal stiffener 8 is omitted, and the solid-web steel box conversion girder can also achieve the following effects: bending performance, torsional performance, vertical shear performance and local Compared with the closed steel box-concrete composite beams in the prior art, the stability performance is not lowered, which greatly facilitates the pouring of concrete 9 in the construction process and improves the pouring efficiency of concrete; and, it is suitable for Cantilever conversion and long-span conversion in high-rise buildings.

For another example, the upper end surface of the top plate 1 in the above embodiment can be welded with the ring DH used for hoisting the steel box girder, so as to facilitate the hoisting operation of the steel box girder at the construction site.

Claims (10)

1. a steel flanged beam steel case conversion beam, comprise steel box-girder and concrete (9), described steel box-girder has by top board (1), the tube-shaped main body that base plate (2) and two pieces of webs (3) are formed by connecting, the polylith lateral partitions (4) along tube-shaped main body axial distribution is provided with in the inner chamber (a) of this tube-shaped main body, each block lateral partitions (4) is equipped with concrete opening (4a), described concrete (9) is filled in the inner chamber (a) of this tube-shaped main body, the outer wall of described two pieces of webs (3) is equipped with longitudinal stiffener (5), described in lower longitudinal stiffener (6) and each block corresponding, lateral partitions (4) is provided with one transverse stiffener (7), upper longitudinal stiffener (5) and lower longitudinal stiffener (6) all extend along the axis of tube-shaped main body, every one transverse stiffener (7) is all arranged between longitudinal stiffener (5) and lower longitudinal stiffener (6), it is characterized in that: described top board (1) is uncovered across being equipped with one group of local corresponding to each of conversion beam, each group is locally uncovered includes a concrete casting mouth (1a) and at least two steam vents (1b), each organize described local uncovered in concrete casting mouth (1a) be all arranged on described conversion beam corresponding across centre position, and the maximum length (L1) of this concrete casting mouth (1a) is arranged on described top board (1), and to be positioned at described conversion beam corresponding to scope length (L2) extremely between, Breadth Maximum (W1) is arranged on described top board (1) width (W2) extremely between, each organize described local uncovered all described conversion beam corresponding across two hogging moment areas within the scope of be respectively equipped with at least one steam vent (1b), and each steam vent is all positioned at above the clearance space between adjacent two pieces of described lateral partitions (4).

2. steel flanged beam steel case conversion beam according to claim 1, it is characterized in that: described lateral partitions (4) is also provided with four concrete circulation breach (4b), these four concrete circulation breach (4b) lay respectively at the corner location of described lateral partitions (4), and described concrete opening (4a) is positioned at the center of described lateral partitions (4).

3. steel flanged beam steel case conversion beam according to claim 2, it is characterized in that: described concrete opening (4a) is the irregularly-shaped hole be made up of rectangular central portion, semi-circular upper portions and semicircular-shaped lower portion, described concrete circulation breach (4b) is sector notch.

4. steel flanged beam steel case conversion beam according to claim 1, is characterized in that: the outer wall of described two pieces of webs (3) all has additional longitudinal stiffener (8) in the middle of twice; Every together in the middle of longitudinal stiffener (8) all extend along the axis of described tube-shaped main body, be positioned at uniform intervals between upper longitudinal stiffener (5) on this web (3) of twice centre longitudinal stiffener (8) on same web (3) and lower longitudinal stiffener (6) and distribute.

5. steel flanged beam steel case conversion beam according to claim 1, it is characterized in that: be provided with longitudinal baffle (10) in the inner chamber (a) of described tube-shaped main body, this longitudinal baffle (10) extends along the axis of described tube-shaped main body and the inner chamber (a) of described tube-shaped main body is divided into top box room (a1) and nowel room (a2); Described concrete opening (4a) is positioned at top box room (a1), and described concrete (9) is filled in described top box room (a1), without Concrete Filled in described nowel room (a2).

6. steel flanged beam steel case conversion beam according to claim 5, it is characterized in that: described lateral partitions (4) is also provided with four concrete circulation breach (4b), these four concrete circulation breach (4b) are separately positioned on the corner location that described lateral partitions (4) is positioned at the part of top box room (a1).

7. steel flanged beam steel case conversion beam according to claim 1, is characterized in that: described concrete casting mouth (1a) is that the abnormity be made up of rectangular central portion, semicircle front portion and semicircle rear portion is uncovered.

8. steel flanged beam steel case conversion beam according to claim 1, is characterized in that: described steam vent (1b) is round hole.

9. the steel flanged beam steel case conversion beam according to claim 1 to 8 any one, it is characterized in that: described top board (1) upper end face part be positioned at outside described concrete casting mouth (1a) is provided with the steel plate (13) of twice for connecting reinforcement concrete shear force wall (11), and this twice steel plate (13) all extends along the axis of described tube-shaped main body.

10. the connecting structure of a conversion beam and reinforced concrete shear wall, comprise conversion beam and be arranged on the reinforced concrete shear wall (11) on this conversion beam, it is characterized in that: described conversion beam adopts steel flanged beam steel case conversion beam according to claim 9; Reinforcing bar (12) lower end being arranged in described steel flanged beam steel case conversion beam concrete casting mouth (1a) scope in two placing of reinforcements of described reinforced concrete shear wall (11) all from concrete casting mouth (1a) stretch into the inner chamber (a) of described tube-shaped main body and be anchored at described concrete (9), reinforcing bar (12) lower end be positioned at outside described steel flanged beam steel case conversion beam concrete casting mouth (1a) scope is welded and fixed with the twice steel plate (13) of described steel flanged beam steel case conversion beam respectively.