CN108412095B - A truss support structure for a tall and large-span curtain wall - Google Patents

Abstract

The invention discloses a truss support structure of a high-span curtain wall, which comprises a curtain wall keel, a stress truss and a stress stay cable, wherein the stress truss is vertically arranged between an upper layer main structure and a lower layer main structure of a building, the curtain wall keel is provided with an inner layer and an outer layer which are both fixedly connected to the stress truss, two ends of the stress stay cable are respectively and fixedly connected to two different stress trusses and fixedly connected with the curtain wall keel, and a fixing component for fixing curtain wall glass is fixedly connected to the stress stay cable. According to the invention, through the arrangement, the stress truss is stably connected with the existing building, the curtain wall keel is fixedly connected with the stress truss, and the stress stay cable is simultaneously fixed on the stress truss and the curtain wall keel, so that the effect of stable stress of a curtain wall structure with high and large span can be achieved, and the curtain wall glass can be stably fixed on the stress stay cable.

Description

A truss support structure for a tall and large-span curtain wall

technical field

The invention relates to the technical field of curtain wall construction, in particular to a truss support structure for a tall and large-span curtain wall.

Background technique

With the development of the city, the height of the building is also getting higher and higher, although it can provide more vertical space for human daily activities, but due to the excessive weight of the concrete structure, the height of the building was once restricted. Therefore, on the one hand, in order to reduce the weight of the building, and on the other hand, for the sake of beauty, most of the commercial office buildings at this stage adopt the frame structure and steel structure, and replace the original outer wall by installing the curtain wall to achieve the desired effect.

The Chinese patent document with the application publication number CN104453034A discloses a connection structure of an inclined hidden frame glass curtain wall, which includes a ceiling, a truss and a number of hidden frame glasses. Fixed connection, the hidden frame glass is connected to the beam through the column, and the beam is welded to the steel frame to form a force-bearing whole connected to each other.

In the above scheme, the support of the hidden frame glass of the curtain wall is mainly concentrated on the beams and steel frames, and then the horizontally installed trusses are used to support the force to form an overall support force system, but the force-bearing components occupy too much space. And seriously affect the overall beauty of the building.

In response to the above problems, the Chinese patent document with application publication number CN102444228A discloses another curtain wall structure, which includes a main curtain wall and a secondary curtain wall, the main curtain wall is located between the main structures of the building, and the secondary curtain wall covers the outer surface of the main structure of the building. The main curtain wall includes a structural stress system and components. The structural stress system is located between the main bodies of the building, and the components are fixed on the structural stress system. The secondary curtain wall is provided with components, and the components of the secondary curtain wall are covered on the outer surface of the main structure of the building, and The secondary curtain wall component transfers the load to the primary curtain wall.

By dividing the inner and outer curtain walls into two layers, the outer curtain wall is fixed on the main structure of the building, which simplifies the overall support and stress structure, and does not affect the overall appearance. However, the scope of application of this scheme is not large, and the supporting structure is relatively weak for high and long-span curtain walls. As the storey height increases, the supporting rods will not be able to further meet the force requirements due to the restriction of the slenderness ratio, resulting in the overall curtain wall. The force is unstable and difficult to implement.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a truss support structure for a tall and large-span curtain wall, which has the effects of wider application range and stable overall stress.

The above-mentioned technical purpose of the present invention is achieved through the following technical solutions: a truss support structure for a tall and large-span curtain wall, comprising a curtain wall keel, a stressed truss and a stressed cable, and the stressed truss is vertically arranged up and down the building Between the two-layer main structure, the curtain wall keel has two inner and outer layers, and both are fixedly connected to the force truss, and the two ends of the force cable are fixedly connected to two different force trusses respectively. It is fixedly connected with the curtain wall keel, and a fixing component for fixing the curtain wall glass is fixedly connected to the force-receiving cable.

By adopting the above technical solution, the stressed truss is firmly connected to the existing building, and the curtain wall keel is fixedly connected to the stressed truss, and the stressed cable is fixed on the stressed truss and the curtain wall keel at the same time, so as to achieve a curtain wall that can adapt to tall and large spans. The effect of stable stress on the structure enables the curtain wall glass to be stably fixed on the stress cable.

The present invention is further provided as follows: the force-bearing trusses are at least arranged at the corners of the building, and each of the force-bearing trusses includes two vertically arranged and fixedly connected between the main structures of the upper and lower floors of the building There are a plurality of horizontal web bars arranged at equal distances in height between the two truss columns, and a plurality of diagonal web bars are also arranged between the two truss columns, and the two ends of the diagonal web bars are respectively Connect with the ends of different horizontal web rods; one of the two truss uprights is located on the inner layer of the curtain wall keel, and the other is located on the outer layer of the curtain wall keel.

By adopting the above technical solution, the force-bearing trusses are arranged at each corner of the building, and the support requirements for the curtain wall keel can be met to a large extent with as few force-bearing trusses as possible; The overall stability of the stressed truss is improved by the amplitude, and then a plurality of oblique triangular structures with smaller area are formed by setting the inclined web rods connecting the upper and lower horizontal web rods, which further strengthens the stability of the stressed truss, making the As the supporting structure of the overall curtain wall, the stress truss has sufficient stress capacity.

The present invention is further arranged as follows: the curtain wall keel includes a beam and a vertical column, the beam is located in the inner layer of the curtain wall keel, and the two ends of the beam are fixedly connected to two truss columns, the upper and lower parts of the vertical column are The two ends are respectively fixed and connected to the main structure of the upper and lower floors of the building, the vertical columns are vertically arranged with the beams, and the vertical columns are vertically fixed and connected to the beams; the curtain wall keel also includes a support rod, and the support A plurality of rods are arranged horizontally, and the support rods are arranged perpendicular to the beams. One end of the support rods is fixedly connected to the beams, and the other end is fixedly connected to the outer layer of the curtain wall keel.

By adopting the above technical solution, the beam of the curtain wall keel is fixedly connected to the truss column, and the stability of the beam under force is further strengthened by a plurality of vertical columns, which also provides a stable force for the support rod fixedly connected to the beam. The foundation can transmit the force of the support rod to the force-bearing truss and the existing building through the beam, and the structure is simple but stable and reliable.

The present invention is further provided as follows: the stressed cable includes a horizontal cable and a vertical cable, the two ends of the vertical cable are respectively fixedly connected to the upper and lower main structures of the building, and the support rod is far away from One end of the beam is fixedly connected to the vertical cable.

By adopting the above technical solution, the two ends of the vertical cable are directly fixed on the existing building, which has good stress stability, but the cable is a soft connector, so it needs to be firmly connected with the support rod to reduce the The stress stability caused by the deformation of the cable is affected. At the same time, because the multiple support rods provide multiple stress points for the cable, the stress interval of the vertical cable is shortened, and the long-term vertical cable is also reduced. Stress instability caused by fatigue strain after use.

The present invention is further arranged as follows: the two ends of the horizontal stay cable are respectively fixedly connected to two truss uprights on the outer layer of the curtain wall keel, and the horizontal stay cable is perpendicular to the support rod, and the support rod is far away from the beam One end of the cable is fixedly connected to the horizontal cable.

By adopting the above technical solution, the horizontal stay cable and the stressed truss are closely connected to form a stressed whole, and the horizontal stay cable is located on the outer layer of the curtain wall keel. The support point of the force, and because the cable is a soft connector, it needs to be firmly connected with the support rod to reduce the influence of poor stress stability caused by the deformation of the cable. The force point of the horizontal cable shortens the force interval of the horizontal cable, and also reduces the stress instability caused by the fatigue strain of the horizontal cable after long-term use.

The present invention is further provided as follows: the curtain wall keels on both sides of the force-bearing truss are further provided with corner reinforcements, the corner reinforcements include a plurality of reinforcing inclined rods, and one end of the reinforcing inclined rods is fixedly connected to the The end of the support rod and the other end are fixedly connected to the beam, and the reinforcing inclined rods are all arranged in parallel with the horizontal web rod.

By adopting the above technical solutions, the stressed trusses are located at all corners of the building, so the stress of the overall curtain wall is concentrated at the stressed trusses. Therefore, multiple reinforcing inclined rods are set up, which makes the stable force-bearing area of the force-bearing truss wider, extends the influence range of the force-bearing truss, and improves the overall stability of the curtain wall keel.

The present invention is further provided as follows: the upper and lower ends of the curtain wall keel are provided with end reinforcement components, the end reinforcement components include reinforcement rods and reinforcement connectors, at least four reinforcement rods are provided, and the One end of the reinforcing rod is fixedly connected to the reinforcing connecting piece, and the other end of the reinforcing rod is fixedly connected to the supporting rod or the main structure of the building.

By adopting the above technical scheme, the reinforcing rod is fixedly connected to the supporting rod or the main structure of the building through the reinforcing connecting piece, so that the upper and lower ends of the curtain wall keel are subjected to more stable forces, providing a stable force structure for the high-span curtain wall.

The present invention is further provided as follows: the reinforcing connecting piece is fixed on the supporting rod closest to the main structure of the building, the reinforcing connecting piece is in the middle position of the supporting rod, and the reinforcing tie rod is far away from the reinforced connecting piece. One end is fixedly connected to the corner of the curtain wall keel, so that the reinforcing rod forms scissors support.

By adopting the above technical scheme, after forming a scissors-supported structure, the upper and lower ends of the curtain wall keel are divided into triangular structures with smaller areas, which further strengthens the overall stability of the curtain wall keel and is more suitable for high-span curtain wall structures.

The present invention further provides that: the fixing component is a curtain wall glass fixture, one end of the curtain wall glass fixture is detachably connected to the stress cable, and the other end is connected and fixed with the curtain wall glass by bolts.

By adopting the above technical solutions, one end of the curtain wall glass furniture is fixed with the curtain wall glass, and the other end is connected with the tension cable, which realizes the force transmission between the stressed truss, the curtain wall keel and the stressed cable, and finally forms a complete curtain wall support structure. And because the fixed connection is the force cable of the soft connector, it is more convenient for maintenance and replacement in the later period.

The present invention is further provided as follows: both ends of the stressed cable are connected with tension anchors, and a tension prestress is applied to the stressed cable through the tension anchors.

By adopting the above technical solution, the stress cable is prestressed, so that the stressed cable has internal stress, which can reduce the influence of fatigue stress, and further improve the stress stability of the stressed cable. At the same time, the tensioning prestress of the stressed cable can be reapplied periodically to ensure the stability of the stressed cable for a long time.

In summary, the present invention has the following beneficial effects: the stressed truss is stably connected to the existing building, the curtain wall keel is fixedly connected to the stressed truss, and the stressed cable is fixed on the stressed truss and the curtain wall keel at the same time, so as to achieve It can adapt to the effect of stable stress on the high-span curtain wall structure, so that the curtain wall glass can be stably fixed on the stress cable. Because there are multiple support rods fixed on the stress cable, the deformation space of the stress cable is reduced. , improve the stability of the overall curtain wall, and also improve the scope of application of the truss support structure.

Description of drawings

1 is a front view of the stressed truss structure of the present embodiment;

Fig. 2 is the vertical sectional schematic diagram of the curtain wall keel of the present embodiment;

3 is a partial top view of the present embodiment;

Fig. 4 is the enlarged view of A place of Fig. 2;

FIG. 5 is an enlarged view of part B of FIG. 2 .

In the figure: 1. Stressed truss; 11. Truss column; 12. Horizontal web; 13. Diagonal web; 2. Curtain wall keel; 21. Beam; 22. Vertical column; 23. Support rod; 3. Horizontal pull 31. Vertical cable; 4. Reinforced inclined rod; 5. Reinforced tie rod; 6. Reinforced connecting piece; 7. Curtain wall glass fixture.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings.

The specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to the present embodiment without creative contribution as needed after reading this specification, but only in the claims of the present invention are protected by patent law.

Example: A truss support structure for a tall and large-span curtain wall, as shown in Figures 1 and 2, includes a force-bearing truss 1 that is fixedly connected to the main structure of the upper and lower floors of the building, and a curtain wall keel that is integrally connected to the force-bearing truss 1. 2. The stress cable is fixedly connected to the stress truss 1 and/or the curtain wall keel 2, and a plurality of curtain wall glass fixtures 7 for fixing the curtain wall glass (not shown in the figure) are fixed on the stress cable, such as As shown in FIG. 5 , one end of the curtain wall glass fixture 7 is detachably connected to the tension cable, and the other end is fixedly connected to the curtain wall glass through bolts.

In order to better illustrate the specific scheme of the present invention, the curtain wall project selected in this embodiment is one of the first floors of the actual project. The horizontal length of the curtain wall structure of this layer is 84m and the height is 12.6m. The layer is rectangular and is tall Span curtain wall structure.

As shown in FIG. 1 and FIG. 3 , the force-bearing trusses 1 are arranged in four places at four corners, and each force-bearing truss 1 includes two truss uprights 11 , and the two truss uprights 11 are located on the side of the building on this floor. on the diagonal. The upper and lower ends of the two truss columns 11 are fixedly connected to the buildings on the upper and lower floors, and five horizontal webs 12 are arranged between the two truss columns 11, and the distance between each web is 2m. To strengthen the stability between the two truss uprights 11, there are also 6 diagonal web bars 13 connected between the two truss uprights 11. The ends are connected, and the 6 rectangular spaces enclosed by the horizontal web 12, the vertical columns 22 and the upper and lower buildings are further divided into 12 triangular spaces, which greatly strengthens the overall stress capacity of the stressed truss 1.

As shown in Figures 2 and 3, the curtain wall joist 2 includes an inner layer and an outer layer, one of the two truss columns 11 of the above-mentioned stressed truss 1 is located in the inner layer of the curtain wall joist 2, and the other truss column 11 is located in the curtain wall keel. 2 outer layers.

As shown in Figures 2 and 3, the curtain wall keel 2 includes a horizontal beam 21 and a vertical vertical column 22, the beam 21 is located in the inner layer of the curtain wall keel 2, and both ends are fixedly connected to the two force-bearing trusses 1. On the two truss columns 11 on the inner layer of the curtain wall keel 2, the upper and lower ends of the vertical columns 22 are fixedly connected to the upper and lower buildings, and the distance between every two vertical columns 22 is 2.1m, and at the same time, Each beam 21 is also welded and fixed with the vertical column 22, so that a stable force grid is formed between the force-bearing truss 1, the beam 21 and the vertical column 22, which can disperse the load received by each force point as a whole. Reduce the concentrated load and concentrated stress, and prolong the mechanical stability of the overall structure.

As shown in FIGS. 2 and 3 , a plurality of horizontal support rods 23 are also arranged in the curtain wall keel 2. The support rods 23 are arranged vertically with the beam 21, and one end is fixedly connected to the beam 21, and the other end is located outside the curtain wall keel 2. In order to facilitate load transmission, the connection between the support rod 23 and the beam 21 is located on the vertical pole.

As shown in Figures 2 and 3, the stressed cable includes a horizontal cable 3 and a vertical cable 31. The upper and lower ends of the vertical cable 31 are respectively fixedly connected to the upper and lower main structures of the building, while supporting The support rod 23 of the rod 23 on the outer layer of the curtain wall keel 2 is fixedly connected to the vertical cable 31 . The two ends of the horizontal stay cable 3 are respectively fixedly connected to the two truss columns 11 of the two stressed trusses 1 which are located on the outer layer of the curtain wall keel 2, and the one end of the support rod 23 which is located on the outer layer of the curtain wall keel 2 is not only connected to the vertical tension The cable 31 is fixedly connected, and at the same time, as shown in Figure 5, it is also fixedly connected with the horizontal cable 3, so that the stressed cable also forms a stress grid on the outer layer of the curtain wall keel 2, and the inner layer of the curtain wall keel 2 and The nodes on the respective force grids on the outer layer are connected as a whole by the support rods 23 .

Moreover, since the cable itself is a soft connector, although the cable as the connector has the advantage of being convenient for removal and replacement, the cable also lacks the stability of the rigid connector, so both ends of the stressed cable are Equipped with tension anchors (not shown in the figure), the tension anchors are used to apply tension prestress to the stressed cables, and at the same time, the fatigue strain generated by the cables under long-term use is also reduced. influences.

In order to further strengthen the stability of the overall truss support structure and the local load bearing capacity, as shown in Figure 3, the curtain wall keels 2 on both sides of the stressed truss 1 are also provided with reinforcing inclined rods 4 for corner reinforcement. The rod 4 is arranged in parallel with the horizontal web rod 12, and one end of the reinforcing inclined rod 4 is fixedly connected to the end of the support rod 23 at the outer layer of the curtain wall keel 2, and the other end is fixedly connected to the beam 21, thereby connecting the two sides of the stressed truss 1. The curtain wall keel 2 forms a more stable triangular structure in space, which further strengthens the force stability at the corner of the building.

At the same time, as shown in FIG. 2 , the upper and lower ends of the curtain wall keel 2 are also provided with end reinforcement components, and the end reinforcement components are arranged between the two support rods 23 at the upper and lower ends of the curtain wall keel 2 and the upper and lower buildings. The end reinforcement assembly includes four reinforcement rods 5 and a reinforcement connection piece 6, the reinforcement connection piece 6 is fixed at the middle position of the two support rods 23 at the upper and lower ends of the curtain wall keel 2, and one end of the two reinforcement rods 5 is fixed to the building. The other end is fixed on the reinforcing connector 6, so that the four reinforcing rods 5 form a scissors support structure, which further strengthens the bearing capacity of the upper and lower ends of the curtain wall keel 2.

Claims (5)

1. The utility model provides a truss support structure of high large-span curtain, its characterized in that includes: the device comprises a stressed truss (1), a curtain wall keel (2), stressed pull cables, a fixing component, an end part reinforcing component and a tensioning anchor;

the stress truss structure is characterized in that the stress truss (1) is at least provided with a plurality of stress trusses positioned at the corners of a building, each stress truss (1) comprises two truss stand columns (11) which are vertically arranged and fixedly connected between the upper layer main structure and the lower layer main structure of the building, the two truss stand columns (11) in the stress truss (1) arranged at the corners of the building are all positioned on a connecting line from the corner to the longitudinal axis of the building, a plurality of horizontal web members (12) are arranged between the two truss stand columns (11) at equal intervals according to the height, a plurality of inclined web members (13) are further arranged between the two truss stand columns (11), and two ends of each inclined web member (13) are respectively connected with the end parts of different horizontal web members (12); the two truss upright posts (11) in each stressed truss (1) are arranged in a relative position relationship that one truss upright post is arranged close to the outer part of the main structure of the building, and the other truss upright post is arranged close to the inner part of the main structure of the building;

curtain fossil fragments (2) include: a cross beam (21), a vertical upright post (22) and a support rod (23); the cross beam (21) is positioned in the inner layer of the curtain wall keel (2), two ends of the cross beam (21) are respectively and fixedly connected with truss upright columns (11) which are respectively positioned inside the main body structure of the building in two adjacent stress trusses (1), and the upper end and the lower end of the vertical upright column (22) are respectively and fixedly connected to the main body structures of the upper layer and the lower layer of the building; the vertical upright posts (22) are perpendicular to the cross beam (21), and the vertical upright posts (22) are perpendicular to and fixedly connected with the cross beam (21); a plurality of support rods (23) are horizontally arranged, the support rods (23) are perpendicular to the cross beam (21), one end of each support rod (23) is fixedly connected to the cross beam (21), and the other end of each support rod (23) is fixedly connected to the stressed stay cable;

the stress cable comprises: a horizontal cable (3) and a vertical cable (31); two ends of the horizontal cable (3) are respectively and fixedly connected with truss upright posts (11) which are respectively arranged outside the main structure of the building in two adjacent stressed trusses (1), the horizontal cable (3) is perpendicular to the supporting rod (23), two ends of the vertical cable (31) are respectively and fixedly connected to the main structures of the upper layer and the lower layer of the building, and one end of the supporting rod (23) far away from the cross beam (21) is fixedly connected with the horizontal cable (3) and the vertical cable (31);

the fixing component is connected to the stressed inhaul cable;

the corner reinforcing parts are arranged on the curtain wall keels (2) on two sides of the stressed truss (1); the corner reinforcing part comprises a plurality of reinforcing inclined rods (4), one ends of the reinforcing inclined rods (4) are fixedly connected to the end parts of the supporting rods (23), the other ends of the reinforcing inclined rods (4) are fixedly connected to the cross beam (21), and the reinforcing inclined rods (4) are all arranged in parallel with the horizontal web members (12);

tip reinforcing subassembly sets up in the upper and lower both ends of curtain fossil fragments (2), and the tip reinforcing subassembly includes: the reinforced concrete structure comprises reinforced pull rods (5) and reinforced connecting pieces (6), wherein at least four of the reinforced pull rods (5) are arranged, one ends of the reinforced pull rods (5) are fixedly connected to the reinforced connecting pieces (6), and the other ends of the reinforced pull rods (5) are fixedly connected to the supporting rods (23) or a main structure of a building;

and both ends of the stressed cable are connected with the tensioning anchors, and tensioning prestress is applied to the stressed cable through the tensioning anchors.

2. The truss support structure for high and large span curtain walls as claimed in claim 1, wherein the building curtain wall building layer structure is a rectangular structure, and two truss columns (11) in the stressed truss (1) arranged at the building corners of the rectangular structure layer structure are positioned on the diagonal line of the rectangular structure layer structure building.

3. The truss support structure of a high-span curtain wall as claimed in claim 1 or 2, wherein: reinforcing connecting piece (6) are fixed in and are closest to building subject structure on bracing piece (23), reinforcing connecting piece (6) are in the intermediate position of bracing piece (23), reinforcing pull rod (5) keep away from the equal fixed connection in the corner of reinforcing connecting piece (6) one end in curtain fossil fragments (2) for reinforcing pull rod (5) form the scissors and support.

4. The truss support structure of a high-span curtain wall as claimed in claim 1 or 2, wherein: the fixing component is a curtain wall glass clamp (7), one end of the curtain wall glass clamp (7) is detachably connected to the stress stay cable, and the other end of the curtain wall glass clamp is fixedly connected with the curtain wall glass through bolts.

5. The truss support structure for a high-span curtain wall as claimed in claim 3, wherein: the fixing component is a curtain wall glass clamp (7), one end of the curtain wall glass clamp (7) is detachably connected to the stress stay cable, and the other end of the curtain wall glass clamp is fixedly connected with the curtain wall glass through bolts.

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