CN-118029589-B - Single-layer reticulated shell supporting structure for supporting polyhedral curtain wall

CN118029589BCN 118029589 BCN118029589 BCN 118029589BCN-118029589-B

Abstract

The invention relates to a single-layer reticulated shell supporting structure for supporting a polyhedral curtain wall. The structural system provided by the invention has the beneficial effects that the vertical supporting truss and the annular connecting truss are used as a central supporting structure, and the integral stress model is formed by the polyhedral single-layer net shell, so that the modeling and functional requirements of the polyhedral curtain wall can be met on the premise of reducing dead weight and controlling lateral stiffness as much as possible.

Inventors

Qu Haochuan
YANG XUELIN
WANG ZHEN
GAO CHAO

Assignees

浙江省建筑设计研究院
浙大城市学院

Dates

Publication Date: 20260512
Application Date: 20240223

Claims (9)

1. A single-layer reticulated shell supporting structure for supporting a polyhedral curtain wall is characterized by comprising a vertical supporting truss, a circumferential connecting truss, a polyhedral single-layer reticulated shell and a cantilever canopy; The vertical support truss comprises a vertical support truss main body, connecting rods and a support, wherein the vertical support truss main body is positioned between a main body structure and a polyhedral single-layer net shell and is used for bearing vertical force and horizontal force, the vertical support truss main body comprises web members, chord members and stiffening ribs, the web members are connected with the chord members, the stiffening ribs are arranged at connecting nodes to transfer horizontal force, the web members comprise top horizontal web members and inclined web members, the chord members comprise main body side chord members and curtain wall side chord members, the vertical support truss main body is connected with the annular connecting truss through the connecting rods, and loads are transferred to the main body structure or the bottom structure through the connecting rods and the support; The annular connecting truss comprises an annular connecting truss curtain wall side chord member (B101), an annular connecting truss main body side chord member (B102) and an annular connecting truss inclined web member (B103), and the annular connecting truss is connected with the vertical supporting truss and the main body structure; The cantilever canopy comprises a cantilever canopy structure oblique floor vertical rod (E101), a horizontal rod, a cantilever canopy structure net shell side horizontal beam (E104) and a cantilever canopy structure sealing edge beam (E105), wherein the polyhedral single-layer net shell consists of a polyhedral single-layer net shell horizontal rod (L102), a polyhedral single-layer net shell oblique rod (L103), a polyhedral single-layer net shell horizontal edge and corner edge juncture diagonal rod (L104), a foundation supporting unit is formed by the polyhedral single-layer net shell horizontal rod (L102) and the polyhedral single-layer net shell oblique rod (L103), the bottom of the foundation supporting unit is supported between annular connecting truss curtain wall side chords (B101) with different elevations except the bottom of the foundation supporting unit, the bottom of the foundation supporting unit is sealed by adopting the polyhedral single-layer net shell bottom sealing edge horizontal rod (L105), each curtain wall surface is in a specific angle juncture at the boundary of the horizontal edge and the corner edge, and the polyhedral single-layer net shell horizontal edge and the corner edge juncture diagonal rod (L104) are arranged at the junction.
2. The single-layer reticulated shell supporting structure for supporting a polyhedral curtain wall according to claim 1, The connecting rod piece comprises a connecting rod with a curtain wall structure, a connecting rod with a main body structure, a pre-buried steel plate connected with the main body structure and anchor bars; The support comprises a column foot boot foot, a column foot concrete cushion layer, a column foot bottom steel plate, a column foot foundation bolt, a column foot outsourcing concrete protection layer and constructional steel bars.
3. The single-layer reticulated shell supporting structure for supporting a polyhedral curtain wall according to claim 2, wherein the vertical supporting truss is connected with the main body structure and comprises a curtain wall structure connecting rod, a main body structure connecting rod, a pre-buried steel plate connected with the main body structure and anchor bars, the curtain wall structure connecting rod, the main body structure connecting rod, the truss and the pre-buried steel plate connected with the main body structure are all welded, the bearing capacity of a welding line is not smaller than that of a corresponding connecting member, and if the pre-buried steel plate connected with the main body structure is not implemented, a post-anchoring measure is adopted.
4. A single-layer reticulated shell supporting structure for supporting a polyhedral curtain wall according to claim 3, wherein the column feet of the vertical supporting truss are welded with steel plates at the bottom of the column feet, the column feet are arranged to transmit horizontal force, a concrete cushion layer is arranged under the steel plates at the bottom, the steel plates at the bottom of the column feet are connected with the bottom structure by adopting column feet foundation bolts, and a concrete protection layer and constructional steel are wrapped outside the column feet.
5. The single-layer reticulated shell supporting structure for supporting a polyhedral curtain wall according to claim 4, wherein the annular connecting trusses are parallel to the horizontal plane to bear horizontal load, a plurality of annular connecting trusses are arranged along the height direction, and the side length of each truss varies with the lengths of curtain walls of different heights.
6. The single-layer reticulated shell supporting structure for supporting a polyhedral curtain wall according to claim 5, wherein the inclined landing vertical rods (E101) of the cantilever canopy structure are used for realizing partial opening of the single-layer reticulated shell structure, and the horizontal beams (E104) of the cantilever canopy structure on the side of the reticulated shell are part of annular connecting trusses and provide out-of-plane rigidity together with the annular connecting trusses within the width range of the canopy.
7. The single-layer reticulated shell supporting structure for supporting a polyhedral curtain wall according to claim 6, wherein the polyhedral single-layer reticulated shell adopts a reticulated shell structure with a certain curvature on each face of the polyhedron, and forms a sphere or an ellipsoid when the curvature of the polyhedral single-layer reticulated shell is continuous.
8. A method of assembling a single-layer latticed shell support structure for polyhedral curtain wall support in accordance with any one of claims 1 to 7, comprising: S1, the chord members, web members and connecting rods of each truss are assembled respectively and are connected with a main body structure and a bottom structure to form a vertical stress system; S2, the chords, web members and connecting rods of the annular connecting trusses are assembled respectively or are assembled in sections according to the side lengths and the supports; s3, the polyhedral single-layer latticed shell units are respectively assembled and then connected with the annular connecting truss to form a supporting structure main body; S4, installing a cantilever rod and a connecting rod of the cantilever canopy structure; s5, coating anti-corrosion paint and fireproof paint according to the function and fire-fighting requirements.
9. Use of a single-layer reticulated shell support structure for supporting a polyhedral curtain wall according to any one of claims 1 to 7 in the design and bearing of a support structure for realising the modelling and function of a polyhedral curtain wall.

Description

Single-layer reticulated shell supporting structure for supporting polyhedral curtain wall Technical Field The invention relates to the technical field of structural engineering, in particular to a single-layer reticulated shell supporting structure for supporting a polyhedral curtain wall. Background The polyhedral curtain wall is a space with a complex modeling integrally closed and partially opened and formed by mutually staggered connection of a plurality of curtain wall surfaces, and is widely applied to landmark buildings such as commercial complexes or building decoration positions such as tower crowns with high-rise structures by the novel modeling and eye-lighting building effect. The latticed shell structure is based on rod pieces, forms a grid according to a certain rule, is a space structure arranged according to a shell, has the characteristics of a rod system structure and a shell structure, and is suitable for large-span roof structures of exhibition halls, theatres, gymnasiums and the like and load-bearing systems as complex body type structures. For a polyhedral curtain wall structure with complex modeling, a single-layer latticed shell structure with strong space adaptability is used as a supporting structure of the polyhedral curtain wall structure, so that the polyhedral curtain wall structure is a reasonable and effective solution. The use of a single-layer reticulated shell rather than a double-layer reticulated shell, while sacrificing the stability of the support structure to some extent, provides greater assistance in the utilization of the interior space and the realization of the building effect. The vertical supporting structure and the annular connecting structure are adopted on the basis of the reticulated shell structure to serve as the supporting seat of the reticulated shell structure, the integral reticulated shell can be divided into independent stressed units, the integrality is considered, and the building with difficulty in direct connection of the main body structure and the reticulated shell curtain wall in a long distance and the like is a reasonable solution. The vertical supporting structure has the requirements of strength and rigidity, and simultaneously, the requirements of attractive appearance are still required to be met, so that the truss structure with high bearing capacity, high rigidity and light structure is a reasonable solution. The truss structure form is consistent with the reticulated shell structure, so that the integral structure has uniformity. The flexible plane modeling of truss structure also can adapt to the elevation angle change of polyhedral curtain wall. The annular connecting structure plays roles of linking the whole structure, coordinating deformation and providing supporting points for the latticed shell structure. Therefore, the truss structure with higher rigidity and light structure is adopted, the structural integrity can be enhanced while the structural member form of the curtain wall supporting structure is kept consistent, the realization of large span is facilitated, the requirements on the vertical supporting structure and the main body structure are reduced, and the truss structure is a reasonable solution. The canopy often exists in building access & exit, has played the effect of shielding from wind and rain. The adoption of a simple overhanging component is a reasonable solution by combining the larger out-of-plane rigidity of the net shell of the horizontal connecting truss with the larger in-plane rigidity of the single-layer net shell. In addition, the net shell structure has the problems of complex node connection structure, complex structural stress performance, large component size, difficult installation and the like, and the reasonable and effective design of the vertical support truss and the annular connection truss can divide the whole net shell structure into relatively independent units, thereby providing assistance for the implementation of the single-layer net shell structure while meeting the bearing capacity and functional requirements of support. In view of the above, it is necessary to develop a single-layer reticulated shell structure for supporting a polyhedral curtain wall and a design method thereof, so as to be suitable for the modeling and functional requirements of the polyhedral curtain wall that varies along the height direction. Disclosure of Invention The invention aims at overcoming the defects of the prior art and provides a single-layer reticulated shell supporting structure for supporting a polyhedral curtain wall. In a first aspect, a single-layer reticulated shell supporting structure for supporting a polyhedral curtain wall is provided, comprising a vertical supporting truss, a circumferential connecting truss, a polyhedral single-layer reticulated shell and a cantilever canopy; The vertical support truss is divided into a horizontal side vertical support truss and a corner side vertic