A large-span and wide-view steel structure high-rise building facing the scenery

Abstract

The present invention relates to the technical field of hybrid structures of steel and concrete, and discloses a steel structure high-rise building with a large span and a wide viewing angle. An obliquely intersecting grid steel tube is used as the core tube, and rigid angle tubes are used for fixation on two vertical edges of the obliquely intersecting grid steel tube far away from the landscape, so that its stiffness meets the requirements of the core tube. The obliquely intersecting grid steel tube does not block the view, and the rigid angle tube is located on the surface of the building far away from the landscape and does not block the viewing field outside the rigid angle tube, so that good viewing fields can be obtained in the areas outside the rigid angle tube in the building. At the same time, since the rigid angle tube has a non-full-enclosed and very small cross-sectional structure, good viewing fields can also be ensured inside the rigid angle tube. The combination of the above two points enables the entire building to have both the viewing field of a pure steel structure building and the high floor number of a frame-core tube structure building. At the same time, the three main tubes arranged in a triangular pattern have a larger distribution area, allowing the building to have a larger span.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid structures of steel and concrete, and particularly to a steel structure landscape-facing high-rise building with a large span and a wide viewing angle. Background Art

[0002] For buildings close to landscapes, in addition to the structural strength requirements and appearance requirements that conventional buildings need to meet, there are often higher viewing requirements compared to conventional buildings. Because such buildings not only serve as venues for people's activities but also as viewing platforms. Taking sea-view rooms as an example, on the side close to the sea, there generally need to be large floor-to-ceiling windows, or even the entire wall is a curtain wall.

[0003] For buildings using load-bearing walls as load-bearing members, the load-bearing walls will undoubtedly seriously block the view looking out from the building. Therefore, more landscape-facing buildings are steel structure buildings. However, large-scale pure steel structures have their own limitations. Since the stiffness of pure steel structures themselves is not as good as that of reinforced concrete (steel structures belong to flexible structures in classification, while shear walls belong to rigid structures), the number of floors of pure steel structures in the vertical direction is severely limited (generally not exceeding 6 floors, and the maximum not exceeding 15 floors). If you want to build a steel structure building with a large number of floors, a core tube surrounded by a reinforced concrete shear wall often needs to be set in the center of this steel structure building. But this brings two new problems. One is that there is no view looking out from the core tube at all, resulting in this part of the area not having the function of viewing the scenery. The other is limited by the stiffness problem of the steel structure, the span of the entire floor cannot be too large, and it can only expand a relatively narrow circle outward around the core tube. That is to say, only the area around the core tube in the whole building has a view looking out. And due to the occlusion of the core tube, which occupies a large proportion in the cross-section, only the part close to the landscape in this circle of area can have sufficient viewing vision, and other parts will be more or less blocked by the core tube.

[0004] In the prior art, there is an obliquely intersecting grid steel tube. Since it is enclosed by rods, it does not block the view. However, when its length is relatively long, its stiffness is insufficient, so it cannot be used as the core tube of a high-rise building. Generally, it can only be wrapped around the outer periphery of the building to increase the strength of the building or improve the appearance of the building. But the inventor found that if at least two vertical edges of the obliquely intersecting grid steel tube are fixed, the stiffness of the obliquely intersecting grid steel tube will be greatly improved and it can be used as the core tube of a building. This discovery has been successfully applied to the large-span high-rise building of Hytera Global Headquarters in Shenzhen (on reclaimed land, facing the sea), enabling the building to obtain an excellent viewing angle. Summary of the Invention

[0005] The present invention provides a steel structure landscape-facing high-rise building with a large span and a wide viewing angle.

[0006] The technical problems to be solved are as follows: The number of floors and the span of a building with a pure steel structure are limited, while the viewing field of vision of a building with a frame-core tube structure is not good (even worse for a frame structure or a frame-shear wall structure).

[0007] To solve the above technical problems, the present invention adopts the following technical solutions: A steel structure high-rise building with a large span and a wide viewing angle, the cross-section of the building is rectangular, one side elevation of the building is arranged close to the landscape and is denoted as the landscape-facing side, and the side elevation facing away from the landscape is denoted as the background side; the high-rise building facing the landscape is a building with a frame-core tube structure, and is provided with three main tubes vertically penetrating the entire building and arranged in a triangular shape on the building cross-section. Among the three main tubes, two are rigid corner tubes arranged on the background side, and the other is an obliquely intersecting grid steel tube arranged in the middle of the building and serving as the main core tube; the two outer corners of the obliquely intersecting grid steel tube close to the background side are respectively fixedly connected to the two rigid corner tubes;

[0008] A restraint truss for further enhancing the stiffness of the steel structure is also hoop-mounted on the outer periphery of the building. The restraint truss is arranged at intervals along the vertical direction on the building and is respectively fixedly connected to the three main tubes.

[0009] Furthermore, the rigid corner tube is surrounded by a plurality of rigid columns arranged at intervals along the circumferential direction of the rigid corner tube, and adjacent two rigid columns are fixedly connected by connecting beams arranged at intervals along the vertical direction; a steel beam grid fixedly connected to the surrounding rigid columns is arranged inside the rigid corner tube, and the steel beam grids inside the two rigid corner tubes extend outward and are connected into one body.

[0010] Furthermore, the landscape is a sea view, and the high-rise building facing the landscape is a sea-view house arranged on a beach or a reclaimed land area by the sea.

[0011] Furthermore, the restraint truss is a planar truss with a vertical plate surface. The planar truss includes at least two layers of horizontally arranged chord members and diagonal web members cross-arranged between the chord members. The diagonal web members are the floor beams of the building; in addition to the part on the outer periphery of the building, the restraint truss also includes a part arranged in a grid pattern of vertical and horizontal intersections on the building cross-section, and the restraint trusses on the outer periphery and inside of the building are connected into one body.

[0012] Furthermore, the two side walls of the obliquely intersecting grid steel tube parallel to the landscape-facing side are stretched outwards from the inside of the building and are respectively flush with the landscape-facing side and the background side. In the part where the obliquely intersecting grid steel tube overlaps with the planar truss, the obliquely intersecting grid steel tube is composed of the diagonal web members of the planar truss; and in the part where it overlaps with the rigid corner tube, the obliquely intersecting grid steel tube is composed of the side walls of the rigid corner tube.

[0013] Furthermore, the bottom of the landscape-facing high-rise building is also provided with a podium made of steel structure, and a secondary core tube is arranged in the podium. The secondary core tube is formed by connecting multiple parallel shear walls made of reinforced concrete. The shear walls of the secondary core tube are perpendicular to the landscape-facing surface and are interconnected by a grid of steel beams arranged vertically and horizontally.

[0014] Furthermore, the part of the landscape-facing high-rise building above the podium is denoted as the tower. A gap for viewing is left between the tower and the podium, and the top of the podium is denoted as an open viewing platform. The rigid angular tube is arranged at the internal corner position of the tower.

[0015] Furthermore, the restraint trusses are arranged at the bottom of the podium, the bottom of the tower, and the top of the tower. The restraint truss at the bottom of the tower is a cantilever truss.

[0016] Furthermore, in the skewed grid steel tube and the restraint trusses, connectors are respectively arranged at the intersection positions of the members. The connector is provided with butt joints corresponding to the ends of the members at the intersection position one by one.

[0017] Furthermore, each floor slab of the landscape-facing high-rise building includes floor beams, a steel truss floor formwork laid on the floor beams, and a concrete layer arranged on the steel truss floor formwork.

[0018] Compared with the prior art, a large-span and wide-view steel structure landscape-facing high-rise building of the present invention has the following beneficial effects:

[0019] In the present invention, by using rigid angular tubes to fix the two vertical edges of the skewed grid steel tube away from the landscape, its stiffness is improved, enabling it to be used as the core tube of the building. The skewed grid steel tube does not block the view, while the rigid angular tube is located on the surface of the building away from the landscape and does not block the viewing field outside the rigid angular tube, so that the areas outside the rigid angular tube in the building can all obtain good viewing fields;

[0020] At the same time, since the rigid angular tube is not the core tube and only the two vertical edges of the skewed grid steel tube need to be fixed, it is thus allowed to adopt the rigid angular tube of this non-full-surrounding (equivalent to being enclosed by a circle of multiple reinforced concrete columns) and very small cross-section in the present invention, thereby ensuring that there can also be a good viewing field inside the rigid angular tube;

[0021] The combination of the above two points enables the entire building to have both good viewing fields like a pure steel structure building and a high number of floors like a conventional frame-core tube structure building. At the same time, the three main tubes arranged in a triangular pattern have a larger distribution area, allowing the building to have a larger span. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a structural schematic diagram of a large-span and wide-view steel structure landscape-facing high-rise building of the present invention

[0023] Figure 2 for Figure 1 Schematic diagram of the steel structure;

[0024] Figure 3 for Figure 1 Schematic diagram of the cross section of the middle podium; for easy reading, Figure 3-4 The medium shear wall columns are shown in dark black;

[0025] Figure 4 for Figure 1 Schematic cross section of the middle tower room;

[0026] Figure 5 Schematic diagram of the positional relationship between the rigid corner tube and the diagonal grid steel tube; note that the diagonal grid steel tube in the figure extends all the way to the upper edge of the figure, sharing many parts with the rigid corner tube, rather than just being located below the rigid corner tube;

[0027] Figure 6 This is a schematic diagram of the connector structure. This figure shows a "M"-shaped connector. The "Y"-shaped and "L"-shaped connectors are the same.

[0028] Figure 7 This is a schematic diagram of the arrangement of steel tube concrete columns. The black blocks in the figure are steel tube concrete columns. For the convenience of reading the figure, the outlines of the oblique grid steel cylinder and the rigid angle cylinder are marked with dotted lines.

[0029] Among them, 1-diagonal grid steel tube, 2-rigid corner tube, 3-constrained truss, 4-podium, 41-secondary core tube, 5-tower room, 6-open observation deck. DETAILED DESCRIPTION

[0030] like Figure 1-4 As shown, a large-span and wide-view steel-structured high-rise building with a view has a rectangular cross-section, a side facade of the building is close to the landscape and is recorded as the view face, and the side facade facing away from the landscape is recorded as the background face; the high-rise building with a view is a frame-core tube structure building, and has three main tubes that vertically run through the entire building and are arranged in a herringbone shape on the cross-section of the building. In addition to these, there are steel columns (usually called outer frame columns) on the periphery of the building, and floor beams are arranged at each floor slab position. The floor beams on the periphery of the building are connected as a whole to form a steel ring beam, and the steel ring beam connects the steel columns on the periphery of the building as a whole.

[0031] like Figure 5 As shown, among the three main tubes, two are rigid corner tubes 2 arranged on the background surface, and the other is a diagonal grid steel tube 1 arranged in the middle of the building and serving as the main core tube; the two positive corners of the diagonal grid steel tube 1 close to the background surface are respectively fixedly connected to the two rigid corner tubes 2, and the floor slabs of each floor of the building are respectively fixedly connected to the three core tubes;

[0032] Steel structures are flexible structures in architecture. Therefore, the skew grid steel tube 1 itself cannot be used as a core tube with stiffness requirements. However, the steel tube has sufficient stiffness when it is very short, but its stiffness seriously decreases after its length becomes very long. When the length of the skew grid steel tube 1 is very long, its shear stiffness can still meet the requirements, but its flexural and torsional stiffnesses are not sufficient to meet the requirements. Therefore, the rigid angle tube 2 is used here to fix two vertical edges of the skew grid steel tube 1 that are far apart. After the two vertical edges are fixed, their torsion and bending are restricted, so that they have sufficient torsional and flexural stiffnesses and can be used as the core tube of the building.

[0033] In this embodiment, the cross-section of the skew grid steel tube 1 is rectangular. The skew grid steel tube 1 is enclosed by four concrete-filled steel tubes respectively arranged at the positions of the four vertical edges of the skew grid steel tube 1 and the skew grid arranged at the positions of the four side elevations; the skew grid in the side wall of the skew grid steel tube 1 is a diamond grid, and each diamond grid is provided with a rod connecting the two diagonal points in the horizontal direction of the diamond grid, and is denoted as a hoop rod; the floor slab of the building where the skew grid steel tube 1 is located is arranged at the diagonal position in the horizontal direction of the diamond grid, and the hoop rod is the floor beam in the floor slab. The hoop rods under the same floor slab are connected as a whole and form a steel ring beam arranged around the skew grid steel tube 1. The hoop rods here not only prevent the diamond-shaped grids from deforming, thus enhancing the stiffness.

[0034] The rigid angle tube 2, as the name implies, is a rigid structure. The most common rigid structure in architecture is the structure composed of shear walls. Since only the positions of the vertical edges of the skew angle grid steel tube need to be restricted here, and the torsion of the vertical edge itself will not cause the overall torsion of the skew angle grid steel tube, the rigid angle tube 2 does not have requirements for its own torsional stiffness, as long as it has sufficient flexural stiffness. Therefore, the rigid angle tube 2 does not need to be a tubular structure completely surrounded by shear walls, and can be a structure surrounded by multiple discontinuous shear walls, so that there can also be a view outward inside the rigid angle tube 2. In this embodiment, the sum of the cross-sectional areas of the two rigid angle tubes 2 is less than 1 / 4 of the cross-sectional area of the skew grid steel tube 1.

[0035] A restraint truss 3 is also hoop-mounted on the outer periphery of the building to further enhance the stiffness of the steel structure. The restraint truss 3 is arranged at intervals along the vertical direction on the building and is fixedly connected to the three main tubes respectively.

[0036] The function of the restraint truss 3 here is similar to that of the gun hoop on an ancient cannon or the reinforcing ring of a pressure vessel. It interrupts the transmission of deformation and divides a very long structure into sections like bamboo. When calculating the stiffness, it is no longer calculated as a whole long structure, but divided into multiple shorter structures (with high stiffness) for calculation, thereby enhancing the stiffness.

[0037] The rigid angle tube 2 is formed by a plurality of rigid columns arranged at intervals along the circumference of the rigid angle tube 2, and two adjacent rigid columns are fixedly connected by connecting beams arranged at intervals along the vertical direction; its bending stiffness is similar to that of a structure entirely surrounded by shear walls. A steel beam grid fixedly connected to the surrounding rigid columns is arranged inside the rigid angle tube 2, and the steel beam grids in the two rigid angle tubes 2 extend outward and are connected as a whole.

[0038] In this embodiment, the cross-section of the rigid corner tube 2 is rectangular, and the rigid columns include steel tube concrete columns arranged at the four corners of the cross-section of the rigid corner tube 2, and shear wall columns arranged at the remaining positions. The connecting beams of the same rigid corner tube 2 on the same horizontal plane are connected as a whole to form a steel ring beam. The four corners of the steel ring beam are welded to the steel tube concrete columns and are wrapped by the concrete of each shear wall column; the steel beam grid and the steel ring beam correspond to each floor slab of the building one by one and are flush with the corresponding floor slabs, and the edge of the steel beam grid penetrates the concrete of the shear wall column and is fixedly connected to the steel ring beam; each of the two rigid corner tubes 2 has a vertical edge that overlaps with a vertical edge of the diagonal grid steel tube 1, and at each overlapping position, the rigid corner tube 2 and the diagonal grid steel tube 1 share a steel tube concrete column.

[0039] The shear wall column is provided with embedded parts for connecting the steel beam grid and the oblique grid steel tube 1. During the construction of the rigid angle tube 2, it is constructed from bottom to top in sections. In each section, the steel tube concrete columns at the four corners are installed first, and then the steel cage in the shear wall column is tied and the connecting beam is welded to the steel tube concrete column. Then the embedded parts are fixed to the connecting beam, and then the concrete of the shear wall column is poured. Finally, the steel beam grid (including the inside of the rigid angle tube 2 and between two rigid angle tubes 2) is installed. Here, since a climbing formwork is needed to pour concrete, if the steel beam grid is installed first, the climbing formwork cannot be used. Therefore, here, the embedded parts are installed first, leaving an interface on the shear wall column, and then the steel beam grid and other structures are installed after the concrete is poured. The embedded parts can be fixed to the connecting beam by welding or other methods, so that it can be prevented from being distorted during the pouring process and the connection strength can be increased.

[0040] The shear wall columns here are actually very narrow reinforced concrete shear walls, whose width is usually no more than five times the thickness, and no more than 10 times the thickness at most (on the background surface), and the width direction is set along the extension direction of the connecting beam, so they are called columns here. The rigid columns here can also all be steel tube concrete columns, but this is not easy to connect, because welding is more troublesome than burying them in concrete. Shear wall columns are used here to form the rigid corner tube 2. In addition to the advantage of easy connection mentioned above, another point is that they can be cast in batches quickly using an integrated climbing formwork. The shared steel tube concrete column makes the rigid corner tube 2 more tightly connected to the diagonal grid steel tube 1.

[0041] Although the rigid corner tube 2 here is not the core tube, there is also a steel beam grid integrated with shear walls inside, similar to that in a conventional shear wall core tube (with a higher layout density than the floor beams in the rest of the part, and the grids inside are multiple square grids of different sizes). Since the shear wall columns around the rigid corner tube 2 are actually structures similar to reinforced concrete columns, such slender reinforced concrete columns are unstable. Here, the steel beam grid connects the shear wall columns in the two rigid corner tubes 2 together to enhance stability. Note that although the steel beam grid exists on each floor and is actually part of the floor beam, its distribution density is higher than that of the floor beams in the rest of the part. Because the cross-sectional area of the rigid corner tube 2 is small, if its distribution density is the same as that of the floor beams in the rest of the part, there will be few grids inside.

[0042] In this embodiment, the edges of the steel beam grid in the rigid corner tube 2 are embedded in the concrete of the shear wall columns.

[0043] The landscape is a sea view, and the high-rise building facing the view is a sea view house built on the seaside mudflat or reclaimed land area. The building in the present invention has a self-weight close to that of a pure steel structure building and is much lighter than a reinforced concrete structure building, and is particularly suitable for use on various soft foundations. The usage scenario in this embodiment is the Hytera Global Headquarters Building built on the land reclaimed in Shenzhen.

[0044] The restraint truss 3 is a planar truss with a vertical plate surface. The planar truss includes at least two layers of horizontally arranged chord members and diagonal web members cross-arranged between the chord members. The diagonal web members are the floor beams of the building; in addition to the part on the outer periphery of the building, the restraint truss 3 also includes a part arranged in a grid pattern crisscrossing in the building cross-section, and the restraint truss 3 on the outer periphery and inside of the building is integrated.

[0045] If the restraint truss 3 here adopts a structure like a reinforcing ring for a chemical container or a gun hoop for an ancient cannon with only an outer ring, it needs to have a very high stiffness, which is almost impossible for a large-span building. Therefore, in addition to the restraint truss 3 on the outer periphery of the building, some restraint trusses 3 are also arranged inside to form a truss network with an outer frame, so as to ensure sufficient stiffness and be able to play the role of interrupting the deformation transmission of the building. At the same time, the restraint truss 3 here actually only adds some diagonal web members compared with the original building structure, and the additional restraint trusses 3 arranged will not bring much cost increase.

[0046] The two side walls of the skew grid steel tube 1 parallel to the view-facing surface extend outward from the inside of the building and are flush with the view-facing surface and the background surface respectively. In the part where the skew grid steel tube 1 overlaps with the planar truss, the skew grid steel tube 1 is composed of the diagonal web members of the planar truss; and in the part where it overlaps with the rigid corner tube 2, the skew grid steel tube 1 is composed of the side walls of the rigid corner tube 2.

[0047] Here, the two side walls of the diagonal grid steel tube 1 are pulled outwards to some extent and extend to the periphery of the building, thus achieving the required building appearance effect. During the process of pulling outwards, a part of the side wall of the diagonal grid steel tube will overlap with the rigid corner tube 2 and the restraint truss 3. The overlapping parts can be directly shared. This not only saves materials but also improves the connection tightness between the diagonal grid steel tube 1, the rigid corner tube 2, and the restraint truss 3. For a building with a conventional frame-core tube structure, there is a floor slab between the core tube and the outer frame of the building (the structure on the periphery of the building). The beam-column joints between the floor beams in the floor slab and the outer frame are usually hinged joints. The stiffness of the building almost entirely depends on the core tube, and the outer frame does not play much of a role. Here, the three parts are directly connected as a whole, and each part plays a role in enhancing the stiffness of the building.

[0048] As Figure 3 shown, the low-rise building with a view at the bottom also has a steel structure podium 4. Inside the podium 4, there is a secondary core tube 41, which is connected by multiple parallel reinforced concrete shear walls. The shear walls of the secondary core tube 41 are perpendicular to the view-facing surface and are interconnected through a crisscross steel beam grid.

[0049] Here, the podium 4 is located at the bottom of the building. The podium 4 does not have a view effect because it is relatively low and is blocked by surrounding objects such as street lights, trees, and other buildings. Therefore, the view of the podium 4 hardly needs to be considered here. The secondary core tube 41 does not use steel structure like the main core tube but directly uses reinforced concrete shear walls. Of course, some view effects are still considered to a certain extent here. Therefore, the secondary core tube 41 is not an airtight square tube but is connected by three walls perpendicular to the view-facing surface. In this way, its torsional resistance can meet the requirements of a low-rise building like the podium 4, and at the same time, there is enough view field.

[0050] The part of the high-rise building with a view above the podium 4 is denoted as the tower 5. There is a gap for viewing between the tower 5 and the podium 4, and the top of the podium 4 is denoted as the open viewing platform 6. The rigid corner tube 2 is set at the inner corner position of the tower 5. Here, because the area of the podium 4 is very large and its top is higher than the surrounding objects such as trees and street lights, its top can be used as a very good platform. Therefore, a part of the floors between the podium 4 and the tower 5 is cancelled, so that only three main tubes connect the tower 5 and the podium 4, thus leaving an open space as a viewing platform.

[0051] In this embodiment, the restraint truss 3 is arranged at the bottom of the podium 4, the bottom of the tower 5, and the top of the tower 5. These positions are transitional positions where stress concentration is likely to occur. Moreover, the bottom of the tower 5 is cantilevered. Therefore, the restraint truss 3 is arranged here. Of course, if the building is further heightened, the restraint truss 3 needs to be arranged at more positions in the building.

[0052] In the diagonal grid steel tube 1 and the restraint truss 3, connectors are respectively arranged at the positions of the intersections of each rod. The connector is provided with docking interfaces corresponding one by one to the ends of each rod at the intersection position. As Figure 6 shown, the connector here is actually a structure welded by square steel tubes in the shape of a Chinese character "mi" (for most intersections), a "Y" shape (for intersections at the top and bottom of the building), and a structure with a horizontal bar added between the two diagonal strokes on the right side of the letter "K" (for intersections at the positions of the vertical edges of the building). Reinforcing diaphragms need to be welded inside the square steel tubes. When the diagonal grid steel tube 1 is erected, it is constructed section by section from bottom to top. In each section, first, the concrete-filled steel tube columns on the four vertical edges are installed in place, and then the intermediate diagonal grid is installed. It is erected in the order of one layer of connectors, one layer of rods, then one layer of connectors, and then one layer of rods... Note that the rods in this article include all long strip-shaped steel members such as steel beams, steel columns, concrete-filled steel tube columns, and diagonal braces.

[0053] As Figure 7 shown, since the concrete-filled steel tube columns are also rigid columns and are installed relatively quickly, whether it is the concrete-filled steel tube columns at the four corners of the diagonal grid steel tube 1 or the concrete-filled steel tube columns at the four corners of the rigid corner tube 2, they need to be installed first to provide an accurate installation site for the installation of other components. Two concrete-filled steel tube columns are also arranged in the steel beam grid between the two rigid corner tubes 2, and they play the same role.

[0054] Since the diagonal grid steel tube 1 needs to be directly connected to the rigid corner tube 2, the installation accuracy requirement is much higher than when it is used as an outer frame enclosure structure (because the movable range is smaller and there is no longer a circle of floor slabs in between). By arranging connectors at the intersection positions of the rods of the diagonal grid steel tube 1, it is ensured that the three (three points determine a plane, that is, the docking plane) coordinate control point positions of each docking interface of the connector conform to the design values during installation, so that the tolerances that appear in the entire diagonal grid steel tube 1 will not accumulate (because the position of each rod intersection point is precisely controlled and the tolerance cannot accumulate across the rod intersection points), the installation accuracy can meet the requirements, and the entire building can be assembled smoothly.

[0055] For the rigid angle tube 2, its side needs to be provided with an attached tower crane like a conventional shear wall core tube. However, since it is not closed and cannot effectively bear the attached tower crane, concrete-filled steel tubes are set at the four corners of the rigid angle tube 2 and connected with diagonal braces. When installing the tower crane, the cantilever part of the tower crane needs to be connected with the two concrete-filled steel tubes close to the tower crane through diagonal braces extending obliquely downward, and its connection point with the shear wall column needs to be connected with the two concrete-filled steel tubes far from the tower crane through diagonal braces extending obliquely downward.

[0056] The floor slab of each floor of the Linjing high-rise building includes floor beams, a steel truss floor formwork laid on the floor beams, and a concrete layer set on the steel truss floor formwork. The floor slab of a permanent building is not suitable for using a pure steel structure because it is not stable enough to step on. Therefore, it is also a reinforced concrete floor slab here. Compared with an ordinary reinforced concrete floor slab, a steel truss floor slab is used here to speed up the construction. It can also be used as a formwork for pouring concrete and a steel reinforcement cage in the concrete at the same time.

[0057] Among the two side walls of each rigid angle tube 2 perpendicular to the background plane, the rigid columns are set at the vertical edges of the rigid angle tube 2. In this way, very wide doors are left on these two side walls, which can facilitate the exchange of construction materials with the outside world. At the same time, jump boards can be laid on the high-density steel beams inside and between the two rigid angle tubes 2 to form a temporary construction platform for carrying personnel and construction materials. The above-mentioned doors are located at the end of this platform.

[0058] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A steel structure landscape-facing high-rise building with a large span and wide view. The cross-section of the landscape-facing high-rise building is rectangular. One side elevation of the building is set close to the landscape and is denoted as the landscape-facing side, and the side elevation facing away from the landscape is denoted as the background side. It is characterized in that: The landscape-facing high-rise building is a building with a frame-core tube structure and has three main tubes vertically penetrating the whole building and arranged in a triangular shape on the building cross-section. Among the three main tubes, two are rigid corner tubes (2) arranged on the background side, and the other is an obliquely intersecting grid steel tube (1) arranged in the middle of the building and serving as the main core tube; the two outer corners of the obliquely intersecting grid steel tube (1) close to the background side are respectively fixedly connected to the two rigid corner tubes (2); A restraint truss (3) for further enhancing the stiffness of the steel structure is also hoop-mounted on the outer periphery of the building. The restraint truss (3) is arranged at intervals along the vertical direction on the building and is respectively fixedly connected to the three main tubes; The rigid corner tube (2) is surrounded by a plurality of rigid columns arranged at intervals along the circumferential direction of the rigid corner tube (2). Adjacent two rigid columns are fixedly connected by connecting beams arranged at intervals along the vertical direction; a steel beam grid fixedly connected to the surrounding rigid columns is arranged inside the rigid corner tube (2), and the steel beam grids inside the two rigid corner tubes (2) extend outwards and are connected into one body.

2. A steel structure landscape-facing high-rise building with a large span and wide view according to claim 1, It is characterized in that: The landscape is a sea view, and the landscape-facing high-rise building is a sea view house built on a seaside mudflat or reclaimed land area.

3. A steel structure landscape-facing high-rise building with a large span and wide view according to claim 1, It is characterized in that: The restraint truss (3) is a planar truss with a vertical plate surface. The planar truss includes at least two layers of horizontally arranged chord members and diagonal web members cross-arranged between the chord members. The diagonal web members are the floor beams of the building; except for the part on the outer periphery of the building, the restraint truss (3) also includes a part arranged in a grid pattern of vertical and horizontal intersections on the building cross-section, and the restraint truss (3) on the outer periphery and inside of the building is connected into one body.

4. A steel structure landscape-facing high-rise building with a large span and wide view according to claim 3, It is characterized in that: The two side walls of the obliquely intersecting grid steel tube (1) parallel to the landscape-facing side stretch outwards from the inside of the building and are respectively flush with the landscape-facing side and the background side. In the part where the obliquely intersecting grid steel tube (1) overlaps with the planar truss, the obliquely intersecting grid steel tube (1) is composed of the diagonal web members of the planar truss; and in the part where it overlaps with the rigid corner tube (2), the obliquely intersecting grid steel tube (1) is composed of the side walls of the rigid corner tube (2).

5. A steel structure landscape-facing high-rise building with a large span and wide view according to claim 3, It is characterized in that: The bottom of the landscape-facing high-rise building also has a steel structure podium (4). A secondary core tube (41) is arranged inside the podium (4). The secondary core tube (41) is connected by a plurality of parallel shear walls made of reinforced concrete. The shear walls of the secondary core tube (41) are perpendicular to the landscape-facing side and are connected to each other through a vertically and horizontally intersecting steel beam grid.

6. A steel structure landscape-facing high-rise building with a large span and wide viewing angle according to claim 5, characterized in that: The part of the landscape-facing high-rise building located above the podium (4) is denoted as the tower (5). A gap for viewing is left between the tower (5) and the podium (4), and the top of the podium (4) is denoted as the open viewing platform (6). The rigid angle tube (2) is arranged at the internal corner position of the tower (5).

7. A steel structure landscape-facing high-rise building with a large span and wide viewing angle according to claim 6, characterized in that: The restraint truss (3) is arranged at the bottom of the podium (4), the bottom of the tower (5), and the top of the tower (5). The restraint truss (3) at the bottom of the tower (5) is a cantilever truss.

8. A steel structure landscape-facing high-rise building with a large span and wide viewing angle according to claim 1, characterized in that: In the skewed grid steel tube (1) and the restraint truss (3), connectors are respectively arranged at the intersection positions of the members. The connectors are provided with docking ports corresponding one by one to the ends of the members at the intersection positions.

9. A steel structure landscape-facing high-rise building with a large span and wide viewing angle according to claim 1, characterized in that: Each floor slab of the landscape-facing high-rise building includes floor beams, a steel truss floor formwork laid on the floor beams, and a concrete layer arranged on the steel truss floor formwork.

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