Glass curtain wall system and construction method resistant to high wind pressure

Abstract

The present invention relates to the technical field of building curtain walls, and in particular to a high wind pressure resistant glass curtain wall system. In the high wind pressure resistant glass curtain wall system, the glass unit of the curtain wall is fixedly mounted on a supporting column, the bottom of the supporting column is hingedly connected to a support, and the support is fixed to the ground; the top of the supporting column is movably connected to the steel frame structure of the dome; a horizontal connecting rod is arranged between the top of the supporting column and the dome steel frame, one end of the horizontal connecting rod is hinged to the steel frame structure of the dome, and the other end is hinged to the top of the supporting column. The force model of the curtain wall structure is optimized. On the one hand, the structure of the entire supporting column is lightweight, and on the other hand, the horizontal connecting rod is used to cleverly avoid the rigid connection between the supporting column and the dome. The rigid connection will affect the normal ups and downs of the dome, and a large stress concentration will occur at the connection between the dome and the supporting column, and even damage the dome structure.

Description

Technical Field

[0001] The invention relates to the technical field of building curtain walls, in particular to a high wind pressure resistant glass curtain wall system. Background Art

[0002] In the design and construction of modern public buildings such as stations and stadiums, large spans and large spaces are increasingly sought to improve the building's capacity. At the same time, curtain wall structures are also widely used to improve the building's aesthetics. In order to reduce the number of keels and ensure maximum permeability, steel structure + glass curtain wall frame is the main form.

[0003] When glass curtain walls are installed in concrete structures such as office buildings, the curtain walls can be directly fixed to the main structure of the building. Due to the structural characteristics of reinforced concrete, the main body of the building will hardly deform.

[0004] However, the dome structure with large space and large span is different. Since there are no supporting columns or very few supporting columns inside, and the characteristics of the steel frame structure, the entire dome will deform significantly, especially under strong wind conditions. This makes it difficult to combine the curtain wall structure with the dome structure. Summary of the invention

[0005] The invention discloses a high wind pressure resistant glass curtain wall system.

[0006] The technical problem to be solved is that the curtain wall structure of a large dome building requires a large amount of supporting structure, making it difficult to achieve a transparent effect.

[0007] In order to solve the above technical problems, the high wind pressure resistant glass curtain wall system of the present invention adopts the following solution.

[0008] High wind pressure resistant glass curtain wall system, the glass unit of the curtain wall is fixedly installed on the supporting column, the bottom of the supporting column is hingedly connected to the support, and the support is fixed to the ground; the top of the supporting column is movably connected to the steel frame structure of the dome;

[0009] The movable connection is to set a horizontal connecting rod between the top of the supporting column and the dome steel frame, one end of the horizontal connecting rod is hinged on the dome steel frame, and the other end is hinged on the top of the supporting column.

[0010] Preferably, oblique support rods are also provided on the left and right sides of the horizontal connecting rod, one end of the oblique support rod is hingedly connected to the top of the supporting column, and the other end of the oblique support rod is hingedly connected to the dome steel frame structure; the two oblique support rods on the left and right sides of the horizontal connecting rod and the dome steel structure form a triangular structure.

[0011] Preferably, the end of the oblique support rod is connected to a bidirectional hinge support, and the bidirectional hinge support is fixed to the top of the supporting column.

[0012] Preferably, the oblique support rods are arranged horizontally.

[0013] Preferably, the horizontal connecting rod is connected to the ball node of the dome steel frame structure, and the ends of the oblique support rods are connected to other ball nodes of the dome steel frame; and the oblique support rods are connected to the ball nodes adjacent to the ball nodes connected to the horizontal connecting rods.

[0014] Preferably, the curtain wall comprises a plurality of support columns arranged at intervals, and the plurality of support columns are connected to each other via connecting beams.

[0015] Preferably, a concrete base is arranged on the ground, and the support is fixed on the concrete base; an embedded rod extending downward into the interior of the concrete base is fixed on the support.

[0016] Compared with the prior art, the high wind pressure resistant glass curtain wall system of the present invention has the following beneficial effects:

[0017] The dome span of a large dome building is very large, and the dome is generally based on a steel structure as the main force bearing body. Compared with the concrete structure, the steel structure itself has strong deformation ability and good elasticity. Therefore, the dome will move significantly when driven by the wind. This movement is within the deformation range of the dome steel structure and has little effect on the dome structure itself. However, due to the movement of the dome structure, when designing the glass curtain wall of the building, rigid steel trusses, steel columns and other structures are mainly used to support the entire curtain wall system from bottom to top, and the top of the steel structure supporting the curtain wall is basically not subjected to force. At this time, the steel structure of the curtain wall is only fixed at the bottom to counteract the horizontal force of the entire curtain wall system when it is subjected to wind pressure. The steel structure is in a cantilever beam force model. Therefore, the structure of the steel structure supporting the curtain wall needs to be set up more complexly, which affects the permeability of the curtain wall on the one hand, and consumes more steel on the other hand.

[0018] In the invention, the bottom of the steel structure used to support the curtain wall, that is, the supporting column, is hingedly connected, and the top of the supporting column is indirectly connected to the dome through a horizontal connecting rod, so that the supporting column becomes a force-bearing model of a simply supported beam. Then the dome mainly moves up and down under the action of the wind. Therefore, when one end of the horizontal connecting rod is driven up and down by the dome, the top of the supporting column will only move slightly left and right, which will not affect the curtain wall structure. Moreover, the supporting column of the simply supported beam model has a simpler structure and a stronger force-bearing capacity, and can evenly transfer the horizontal wind pressure from the top and bottom to the dome and the ground.

[0019] At the same time, the present invention also provides a construction method for the high wind pressure resistant glass curtain wall system. The method comprises the following steps:

[0020] Step 1: Processing and manufacturing of supporting columns;

[0021] Step 2: Support production and installation, the embedded parts are first embedded in the concrete base, and then the support and embedded parts are welded to form a whole;

[0022] Step 3: Install the support column. First, connect the support column to the horizontal connecting rod, then hoist the support column to the support, and finally hinge the support column to the support with a pin; finally, hinge the horizontal connecting rod to the steel frame structure of the building dome;

[0023] Step 4: Install the connecting beam, hoist the connecting beam into place, and connect the connecting beam and the supporting column;

[0024] Step 5: Install the diagonal support rod. One end of the diagonal support rod is connected to the connecting beam or supporting column, and the other end is connected to the steel frame structure of the dome;

[0025] Step 6: Calibration and compounding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the supporting column structure of the front curtain wall of the high wind pressure resistant glass curtain wall system of the present invention;

[0027] Figure 2 It is a side view schematic diagram of the side of the supporting column and the dome connection structure;

[0028] Figure 3 It is a magnified view of the top of the support column;

[0029] Figure 4 It is an enlarged view of the bottom of the support column;

[0030] Figure 5 It is a connection diagram of the horizontal connecting rod and the oblique supporting rod at the top of the supporting column;

[0031] Figure 6 It is a schematic diagram of the connection structure of the oblique support rod close to the supporting column.

[0032] Explanation of the reference numerals: 1-support column, 2-support, 3-horizontal connecting rod, 4-inclined supporting rod, 5-steel frame structure, 5a-ball node, 6-connecting beam, 7-concrete base, 8-embedded parts, 9-bidirectional hinge support. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0034] In the present invention, unless otherwise stated, directional words such as "up, down, left, right" generally refer to the Figure 1The upper, lower, left and right shown in the figure; "inside and outside" refer to the inside and outside relative to the outline of each component itself. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In order to solve the problem that the curtain wall structure of a large dome building requires a large number of supporting structures and is difficult to achieve a transparent effect, the present invention proposes a high wind pressure resistant glass curtain wall system, such as Figures 1 to 6 As shown in .

[0036] A high wind pressure resistant glass curtain wall system, wherein the glass unit of the curtain wall is fixedly mounted on a supporting column 1, the bottom of the supporting column 1 is hingedly connected to a support 2, and the support 2 is fixed to the ground; the top of the supporting column 1 is movably connected to a steel frame structure 5 of the dome; a horizontal connecting rod 3 is arranged between the top of the supporting column 1 and the dome steel frame, one end of the horizontal connecting rod 3 is hingedly connected to the steel frame structure 5 of the dome, and the other end is hingedly connected to the top of the supporting column 1.

[0037] The supporting column 1 here is the supporting system that mainly bears the weight of the curtain wall structure, or called the main keel. The curtain wall glass needs auxiliary supporting structures such as secondary keels to be installed in place. Here, such auxiliary structures and curtain wall glass are collectively referred to as the glass unit of the curtain wall. The supporting column 1 can be a vertical steel column or a Figure 2 The figure shows a steel truss. The tilt angle of the support column 1 or the control of its bending deformation should be determined according to the specific design of the curtain wall. The support column 1 on the force model is a rigid column. For simplicity of expression, the support column 1 is simply regarded as a vertical column with its center of gravity at the connection of the support 2.

[0038] like Figure 2 As shown in the figure, the bottom of the support column 1 is hingedly connected to the support 2, and the support 2 is fixed on a solid and stable ground. The support 2 can be regarded as an immovable stable foundation. The top of the support column 1 is first hingedly connected to the horizontal connecting rod 3, and then the horizontal connecting rod 3 extends to the left and then hingedly connected to the steel frame structure 5 of the dome. The dome itself is strong enough, and when the curtain wall is blown by the wind, the force of the wind can be transmitted to the dome. However, while the dome is strong, its position is not stable, and the dome itself will also move, that is, Figure 2 The right end of the middle horizontal link 3 will be displaced. And after research, it is found that the displacement of the dome structure itself under the action of wind is mainly in the up and down direction, and the horizontal translation is very small. In this way, when the right end of the horizontal link 3 moves up and down, the movement of the left end of the horizontal link 3 is very small, and the main rotation of the horizontal link 3 around the hinge point at the top of the support column 1 occurs. As long as the small amount of left and right displacement of the top of the support column 1 is within the design range, it will not affect the safety of the curtain wall structure.

[0039] In existing reinforced concrete buildings, the support structure of the curtain wall can be directly fixed to the main body of the building because the deformation of the concrete main structure is very small. However, the dome of the dome building will move, and there is no other place in the interior space of the dome building to fix the curtain wall structure.

[0040] Therefore, in the prior art dome buildings, the support column 1 is usually fixed directly on the ground. When the curtain wall is subjected to wind pressure, it is mainly a uniformly distributed load in the horizontal direction, and a large stress concentration will be formed at the bottom of the support column 1, which requires the support column 1 to have sufficient capacity to overcome the positive stress generated by the bending moment of the support column 1. In addition, since there is no fixed structure on the top of the support column 1, the support column 1 is more likely to bend and deform.

[0041] The force model of the simply supported beam of the present invention, on the one hand, lightens the structure of the entire support column 1, and on the other hand, utilizes the horizontal connecting rod 3 to cleverly overcome the problem that the rigid connection between the support column 1 and the dome will affect the normal ups and downs of the dome, causing a large stress concentration at the connection between the dome and the support column 1, and even destroying the dome structure. The horizontal connecting rod 3 here only has axial stress along the horizontal connecting rod 3, and no bending moment and shear stress. The horizontal connecting rod 3 is preferably horizontal or approximately horizontal, and can have an angle of less than 20° with the horizontal plane. When the support column 1 itself has an inclination angle due to design reasons, the horizontal connecting rod 3 should remain perpendicular to the support column 1.

[0042] like Figure 5 and Figure 6 As shown in the figure, in order to improve the stability of the support column 1, the left and right sides of the horizontal connecting rod 3 are also provided with oblique supporting rods 4, one end of the oblique supporting rod 4 is hingedly connected to the top of the support column 1, and the other end of the oblique supporting rod 4 is hingedly connected to the dome steel frame structure 5; the two oblique supporting rods 4 on the left and right sides of the horizontal connecting rod 3 and the dome steel structure form a triangular structure. Because the two ends of the horizontal connecting rod 3 are hingedly connected, the horizontal connecting rod 3 can only transmit axial stress, so when the support column 1 is Figure 1 When the vehicle tilts in the left and right directions, the inclined support rod 4 can be used for stabilization. Figure 5 As shown in , the ball nodes 5a of the dome steel frame structure 5 can be approximately regarded as being immovable relative to each other. In this way, the two oblique support rods 4 and the steel frame structure 5 form a stable triangle. And because the up and down movement of the dome will also drive the ends of the oblique support rods 4 to move, similarly, the two ends of the oblique support rods 4 are also hingedly connected.

[0043] Specifically, a bidirectional hinge support 9 is connected to one end of the oblique support rod 4. The bidirectional hinge support 9, or a ball hinge support, is a hinge support 2 with at least two degrees of freedom. An ordinary hinge generally has only one degree of freedom. Since the movement of the oblique support rod 4 is more complicated, in order to avoid stress concentration caused by bending moment, a bidirectional hinge support 9 (ball hinge support) is set at one end to avoid bending moment of the oblique support rod 4. Preferably, the bidirectional hinge support 9 is fixed to the top of the support column 1.

[0044] like Figure 2 and Figure 5 As shown in , the horizontal connecting rod 3 is connected to the ball node 5a of the dome steel frame, and the end of the diagonal support rod 4 is connected to other ball nodes 5a of the dome steel frame; the ball node 5a connecting the dome has a large force strength on the one hand, and simplifies the force model of the entire dome on the other hand. If the diagonal support rod 4 and the horizontal connecting rod 3 are directly connected to other steel connecting rods of the dome, a large bending moment will be generated on the steel connecting rod, which will also make the force model of the dome difficult to analyze and design. Figure 5 The oblique support rod 4 shown in the figure is connected to the ball node 5a adjacent to the ball node 5a connected to the horizontal connecting rod 3. The purpose of this is to make the oblique support rod 4 inclined to the horizontal connecting rod 3.

[0045] like Figure 1 As shown in , the curtain wall includes a plurality of support columns 1 arranged at intervals, and the plurality of support columns 1 are connected to each other through a connecting beam 6. The support columns 1 correspond to the horizontal connecting rods 3 one by one. Preferably, the bidirectional hinge support 9 (ball hinge support) at the end of the oblique support rod 4 is welded to the connecting beam 6. It is sufficient to arrange a plurality of groups of oblique support rods 4 at intervals along the connecting beam 6, and the number of oblique support rods 4 does not need to correspond to the support columns 1.

[0046] like Figure 4 As shown in , a concrete base 7 is arranged on the ground, and the support 2 is fixed on the concrete base 7; an embedded part 8 extending downward to the inside of the concrete base 7 is fixed on the support 2.

[0047] At the same time, the present invention also provides a construction method for the high wind pressure resistant glass curtain wall system. The method comprises the following steps:

[0048] Step 1: Processing and manufacturing the support column 1;

[0049] Step 2: The support 2 is manufactured and installed. The embedded part 8 is first embedded in the concrete base 7, and then the support 2 and the embedded part 8 are welded to form a whole.

[0050] Step 3: Install the support column 1. First, connect the support column 1 and the horizontal connecting rod 3. Then, hoist the support column 1 onto the support 2. Finally, hinge the support column 1 onto the support 2 with a pin. Finally, hinge the horizontal connecting rod 3 and the steel frame structure 5 of the building dome.

[0051] Step 4: Install the connecting beam 6, hoist the connecting beam 6 into place, and connect the connecting beam 6 and the supporting column 1;

[0052] Step 5: Install the diagonal support rod 4. One end of the diagonal support rod 4 is connected to the connecting beam 6 or the supporting column 1, and the other end is connected to the steel frame structure 5 of the dome;

[0053] Step 6: Calibration and compounding.

[0054] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. High wind pressure resistant glass curtain wall system, characterized by: The glass unit of the curtain wall is fixedly mounted on a supporting column (1), the bottom of the supporting column (1) is hingedly connected to a support (2), and the support (2) is fixed to the ground; the top of the supporting column (1) is movably connected to the steel frame structure (5) of the dome; A horizontal connecting rod (3) is arranged between the top of the supporting column (1) and the dome steel frame, one end of the horizontal connecting rod (3) is hinged to the dome steel frame structure (5), and the other end is hinged to the top of the supporting column (1); An oblique support rod (4) is also provided on the left and right sides of the horizontal connecting rod (3); one end of the oblique support rod (4) is hingedly connected to the top of the supporting column (1), and the other end of the oblique support rod (4) is hingedly connected to the dome steel frame structure (5); the two oblique support rods (4) on the left and right sides of the horizontal connecting rod (3) and the dome steel frame structure (5) form a triangular structure; The end of the oblique support rod (4) is connected to a bidirectional hinge support (9), and the bidirectional hinge support (9) is fixed to the top of the supporting column (1); The horizontal connecting rod (3) is connected to a ball node (5a) of the dome steel frame structure (5), and the end of the inclined support rod (4) is connected to other ball nodes (5a) of the dome steel frame; The oblique support rod (4) is connected to a ball node (5a) adjacent to the ball node (5a) connected to the horizontal connecting rod (3); The curtain wall comprises a plurality of support columns (1) arranged at intervals, wherein the plurality of support columns (1) are connected to each other via a connecting crossbeam (6); A concrete base (7) is arranged on the ground, and the support (2) is fixed on the concrete base (7); An embedded part (8) extending downward into the interior of the concrete base (7) is fixed on the support (2).

2. The high wind pressure resistant glass curtain wall system according to claim 1, characterized in that: The oblique support rod (4) is arranged horizontally.

3. The high wind pressure resistant glass curtain wall system construction method according to claim 1 comprises the following steps: Step 1: Processing and manufacturing the support column (1); Step 2: The support (2) is manufactured and installed. The embedded part (8) is first embedded in the concrete base (7) and then the support (2) and the embedded part (8) are welded to form a whole. Step 3: Install the support column (1). First, connect the support column (1) and the horizontal connecting rod (3). Then, hoist the support column (1) onto the support (2). Finally, hinge the support column (1) onto the support (2) with a pin. Finally, hinge the horizontal connecting rod (3) and the steel frame structure (5) of the building dome. Step 4: Install the connecting beam (6), hoist the connecting beam (6) into place, and connect the connecting beam (6) and the supporting column (1); Step 5: Install the diagonal support rod (4), with one end of the diagonal support rod (4) connected to the connecting beam (6) or the supporting column (1), and the other end connected to the steel frame structure (5) of the dome; Step 6: Calibration and compounding.

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