阅读说明：本技术 一种索膜协同作用的大曲率索膜结构 (Cable membrane structure with large curvature and synergistic effect of cable membrane ) 是由 孙国军 石冬 李铁东 曹晓凯 张志才 徐达发 吴明泽 袁军 于 2019-10-28 设计创作，主要内容包括：本发明公开了一种索膜协同作用的大曲率索膜结构,包括外围刚性边缘构件、径向索、横向索、膜、索夹和夹膜板；径向索和横向索分布于外围刚性边缘构件围成的索膜分布区内,径向索与横向索的交叉位置处通过索夹限位固定,径向索的两端与横向索的两端均通过可调节式锚具与外围刚性边缘构件连接；径向索的索体穿设在膜上索套内,膜的边缘处沿着膜的边缘轮廓安装有夹膜板,夹膜板通过若干个调节螺栓与外围刚性边缘构件连接；本发明通过共同张拉索网及单层膜形成稳定结构,在该结构中单层索网为主要受力结构,具有刚度大、稳定性好的优点,通过对索进行张拉,通过控制径向索及横向索的索力形成目标曲面,能够制造多种形状的索膜结构。(The invention discloses a large-curvature cable membrane structure with cable membrane synergistic effect, which comprises a peripheral rigid edge member, radial cables, transverse cables, a membrane, a cable clamp and a membrane clamping plate, wherein the peripheral rigid edge member is arranged on the periphery of the cable membrane; the radial cables and the transverse cables are distributed in a cable membrane distribution area defined by the peripheral rigid edge member, the crossing positions of the radial cables and the transverse cables are limited and fixed through cable clamps, and the two ends of the radial cables and the two ends of the transverse cables are connected with the peripheral rigid edge member through adjustable anchors; the cable body of the radial cable is arranged in the cable sleeve on the membrane in a penetrating way, the edge of the membrane is provided with a membrane clamping plate along the edge profile of the membrane, and the membrane clamping plate is connected with the peripheral rigid edge component through a plurality of adjusting bolts; the cable membrane structure has the advantages of high rigidity and good stability by jointly tensioning the cable net and the single-layer membrane to form a stable structure, and the single-layer cable net in the structure is a main stressed structure.)

1. The utility model provides a cable membrane structure of big curvature of cable membrane synergism which characterized in that: comprises a peripheral rigid edge member, radial cables, transverse cables, a membrane, a cable clamp and a membrane clamping plate; the radial cables and the transverse cables are respectively provided with a plurality of cables, the plurality of radial cables are radially distributed in a cable membrane distribution area surrounded by the peripheral rigid edge member, the plurality of transverse cables are transversely distributed in a cable membrane distribution area surrounded by the peripheral rigid edge member, the crossing positions of the radial cables and the transverse cables are limited and fixed through the cable clips, and the two ends of the radial cables and the two ends of the transverse cables are connected with the peripheral rigid edge member through adjustable anchors; the membrane stretch-draw in the cable membrane distribution district that peripheral rigidity edge component encloses, the inboard distribution of membrane have a plurality of with the cable cover on the membrane that radial cable cooperation set up, the cable body of radial cable wears to establish in the cable cover on the membrane, the edge of membrane along the marginal profile of membrane installs the clamp diaphragm plate, the clamp diaphragm plate through a plurality of adjusting bolt with peripheral rigidity edge component connects.

2. The cord-membrane synergistic large curvature cord-membrane structure of claim 1, wherein: the membrane is a single layer ETFE membrane.

3. The cord-membrane synergistic large curvature cord-membrane structure of claim 1, wherein: the peripheral rigid edge member is a concrete support member or a steel support member or an aluminium alloy support member.

4. The cord-membrane synergistic large curvature cord-membrane structure of claim 1, wherein: the radial cables and the transverse cables are Galfan plating cables or stainless steel cables or FRP cables.

5. The cord-membrane synergistic large curvature cord-membrane structure of claim 1, wherein: the adjustable anchorage device is a fork lug sleeve adjusting type anchorage device and comprises a rope end part rope head, a sleeve, a double-lug rope head, a first screw rod and a second screw rod, wherein a rivet sheet is arranged at one end of an inner cavity of the rope end part rope head of the rope body, the end part of the rope body of the radial rope or the transverse rope extends into the inner cavity of the rope end part rope head of the rope body and is connected with the rope end part rope head of the rope body through the rivet sheet, the other end of the inner cavity of the rope end part rope head of the rope body is in threaded connection with the first screw rod, one end of the double-lug rope head is connected with the peripheral rigid edge component through a rivet, the other end of the double-lug rope head is in threaded connection with the second screw rod, and one end of the first screw rod protruding out of the end part rope head of the rope body and one.

6. The cord-membrane synergistic large curvature cord-membrane structure of claim 1, wherein: the cable clamp comprises a first clamping piece, a second clamping piece and a third clamping piece which are vertically and sequentially arranged, wherein a first clamping groove is formed in the bottom of the first clamping piece, a second clamping groove matched with the first clamping groove is formed in the top of the second clamping piece, a cable body of the transverse cable is clamped in the first clamping groove and the second clamping groove, a third clamping groove is formed in the bottom of the second clamping piece, a fourth clamping groove matched with the third clamping groove is formed in the top of the third clamping piece, the radial cable is clamped in the third clamping groove and the fourth clamping groove, the first clamping piece is connected with the second clamping piece through high-strength bolts, and the high-strength bolts enable the first clamping piece to be screwed tightly, the second clamping piece is screwed tightly with the third clamping piece, and the radial cable is connected with the transverse cable.

7. The cord-membrane synergistic large curvature cord-membrane structure of claim 1, wherein: the cable sleeve on the membrane is arranged on the inner side of the membrane, and the cable sleeve on the membrane is a membrane with two sides hot-pressed on the membrane.

8. The cord-membrane synergistic large curvature cord-membrane structure of claim 1, wherein: the utility model discloses a clamp diaphragm plate, including double-layered diaphragm plate, including the clamp diaphragm plate, the edge parcel of membrane has the adhesive tape, the adhesive tape joint is in the joint inslot of double-layered diaphragm plate one end, adjusting bolt's nut joint is in the joint inslot of the double-layered diaphragm plate other end, adjusting bolt's screw rod end then through the nut with peripheral rigidity edge component spacing connection.

Technical Field

The invention relates to the technical field of building membrane structures, in particular to a large-curvature cable membrane structure with cable membrane synergistic effect.

Background

With the continuous development of society, people increasingly desire public activity spaces such as large-scale exhibition halls, sports stadiums, airports, railway stations and the like; meanwhile, as the aesthetic level of people is continuously improved, the requirements on the beauty, lightness and the like of buildings are also continuously increased; the cable membrane structure is more and more popular with the public due to the rich color, the light structural form and the beautiful shape. These phenomena greatly promote the continuous innovation of the cable membrane structure. Not only is the innovation in the aspects of safety and economy, but also the innovation in the aspect of modeling, and the aesthetic requirements of people on continuous updating are met.

In recent years, the cable membrane structure is widely applied to the construction of stadiums, exhibition halls and high-speed railway stations at home and abroad. The cable membrane structure atress is reasonable, and structural efficiency is higher, and it is clear to pass the power route, has utilized the atress performance of high strength cable fully, has guaranteed structural rigidity, has utilized the membrane material to have characteristics such as the light transmissivity is good, the color is abundant to make the structure become slim and graceful, rich in expressive force when reducing the steel volume.

At present, a single-layer tension type membrane structure is mainly used in a tension membrane structure, the structure forms a stable system by providing a supporting point for members such as a rod and the like and arranging an anchoring point around the structure and tensioning a single-layer membrane material, and the system formed by depending on the tension of a single-layer membrane has small rigidity and insufficient structural stability; and the commonly used film material is a coating fabric film material, and the light transmission performance is poor. In addition, in the cable net structure, the planar shape mostly adopts a regular shape such as a rectangle, a polygon, a rhombus, a circle, an ellipse and the like, and the shape is single.

Disclosure of Invention

The invention aims to provide a large-curvature cable membrane structure with cable membrane synergistic effect, which aims to solve the problems in the prior art, a stable structure is formed by jointly tensioning a cable net and a single-layer membrane, the single-layer cable net in the structure is a main stressed structure and has the advantages of high rigidity and good stability, and cable membrane structures in various shapes can be manufactured by tensioning cables and controlling the cable forces of radial cables and transverse cables to form a target curved surface.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a large-curvature cable membrane structure with cable membrane synergistic effect, which comprises a peripheral rigid edge member, radial cables, transverse cables, a membrane, a cable clamp and a membrane clamping plate, wherein the cable membrane structure comprises a cable membrane and a cable membrane; the radial cables and the transverse cables are respectively provided with a plurality of cables, the plurality of radial cables are radially distributed in a cable membrane distribution area surrounded by the peripheral rigid edge member, the plurality of transverse cables are transversely distributed in a cable membrane distribution area surrounded by the peripheral rigid edge member, the crossing positions of the radial cables and the transverse cables are limited and fixed through the cable clips, and the two ends of the radial cables and the two ends of the transverse cables are connected with the peripheral rigid edge member through adjustable anchors; the membrane stretch-draw in the cable membrane distribution district that peripheral rigidity edge component encloses, the inboard distribution of membrane have a plurality of with the cable cover on the membrane that radial cable cooperation set up, the cable body of radial cable wears to establish in the cable cover on the membrane, the edge of membrane along the marginal profile of membrane installs the clamp diaphragm plate, the clamp diaphragm plate through a plurality of adjusting bolt with peripheral rigidity edge component connects.

Preferably, the membrane is a single layer ETFE membrane.

Preferably, the peripheral rigid edge member is a concrete support member or a steel support member or an aluminium alloy support member.

Preferably, the cable bodies of the radial cables and the transverse cables are Galfan plating cables or stainless steel cables or FRP cables.

Preferably, the adjustable anchor is a fork ear sleeve adjustable anchor, and comprises a cable end part cable head, a sleeve, a double-lug cable head, a first screw and a second screw, wherein a rivet is arranged at one end of an inner cavity of the cable end part cable head, the cable end part of the radial cable or the transverse cable extends into the inner cavity of the cable end part cable head and is connected with the cable end part cable head through the rivet, the other end of the inner cavity of the cable end part cable head is in threaded connection with the first screw, one end of the double-lug cable head is connected with the peripheral rigid edge component through a rivet, the other end of the double-lug cable head is in threaded connection with the second screw, and one end of the first screw, which protrudes out of the cable end part cable head, is connected with one end of the second screw, which protrudes out of the double-lug cable head, through the sleeve.

Preferably, the cable clamp includes vertical first clamping piece, second clamping piece and the third clamping piece that sets gradually, the bottom of first clamping piece is provided with first centre gripping groove, the top of second clamping piece be provided with the second centre gripping groove that first centre gripping groove cooperation set up, the cable body centre gripping of horizontal cable is in first centre gripping groove with in the second centre gripping inslot, the bottom of second clamping piece is provided with the third centre gripping groove, the top of third clamping piece be provided with third centre gripping groove complex fourth centre gripping groove, radial cable centre gripping is in third centre gripping groove with in the fourth centre gripping inslot, first clamping piece the second clamping piece with through high strength bolt connection between the third clamping piece, the bolt is screwed and is made first clamping piece the second clamping piece with the third clamping piece presss from both sides tightly radial cable with horizontal cable.

Preferably, the cable sleeve on the membrane is arranged on the inner side of the membrane, and the cable sleeve on the membrane is a membrane with two sides hot-pressed on the membrane.

Preferably, the double-layered diaphragm plate is the aluminum alloy material, the both ends of double-layered diaphragm plate all are provided with the joint groove, the edge parcel of membrane has the adhesive tape, the adhesive tape joint is in the joint inslot of double-layered diaphragm plate one end, adjusting bolt's nut joint is in the joint inslot of the double-layered diaphragm plate other end, adjusting bolt's screw rod end then through the nut with peripheral rigidity edge component limit connection.

Compared with the prior art, the invention has the following beneficial technical effects:

according to the large-curvature cable membrane structure with the cable membrane synergistic effect, the single-layer tension membrane is stiffened through the cable net, so that the structural rigidity is increased, the stability is enhanced, the large-curvature cable membrane structure can be manufactured, and the shape can be more diversified. The used material is an ETFE film material, and compared with a coating fabric film material, the ETFE film material has the advantages of good light transmittance, attractive appearance and light weight. The cable-net reinforced umbrella-shaped single-layer ETFE membrane structure has the advantages of novel structure form, reasonable structural stress, attractive building appearance and the like, is convenient to manufacture and install, and has strong practical significance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an isometric view of a large curvature cord membrane structure in which the cord membrane of the present invention acts synergistically;

FIG. 2 is a top view of a cord-membrane structure of large curvature in accordance with the present invention;

FIG. 3 is a schematic diagram of the construction of a grommet on a membrane according to the present invention;

FIG. 4 is a schematic view of an adjustable anchor according to the present invention;

FIG. 5 is a top down assembly view of the cable clamp of the present invention with radial and transverse cables;

FIG. 6 is a perspective assembly view of the cable clamp of the present invention with radial and transverse cables;

FIG. 7 is a schematic view of a first clip of the present invention;

FIG. 8 is a schematic view of a second clip of the present invention;

FIG. 9 is a schematic view of a third clip of the present invention;

FIG. 10 is a schematic view of the assembly of the membrane, the membrane clamping plate, the adjustment bolt and the peripheral rigid edge member of the present invention;

FIG. 11 is a schematic partial perspective view of the assembly of the membrane and the membrane sandwiching plate of the present invention;

in the figure: 1-a peripheral rigid edge member; 2-a radial cable; 3-transverse cables; 4-film formation; 5-cable sleeving on the membrane; 6-a cable clamp; 7-a film clamping plate; 8-adjusting the bolt; 9-cable head at the end part of the cable body; 10-a sleeve; 11-a binaural cable head; 12-a first screw; 13-a second screw; 14-riveting a sheet; 15-riveting; 16-a first clip; 17-a second clip; 18-a third clip; 19-a first clamping groove; 20-a second clamping groove; 21-a third clamping groove; 22-a fourth clamping groove; 23-a high-strength bolt; 24-glue strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a large-curvature cable membrane structure with cable membrane synergistic effect, so as to solve the problems in the prior art.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The embodiment provides a large-curvature cable membrane structure with cable membrane synergistic effect, which is specifically an umbrella-shaped single-layer membrane structure with bidirectional negative gauss large curvature, and comprises a peripheral rigid edge member 1, radial cables 2, transverse cables 3, a membrane 4, cable clamps 6 and a membrane clamping plate 7, as shown in fig. 1 and 2; the radial cables 2 and the transverse cables 3 are respectively provided with a plurality of radial cables 2, the radial cables 2 are radially distributed in a cable membrane distribution area surrounded by the peripheral rigid edge member 1, and the transverse cables 3 are transversely distributed in a cable membrane distribution area surrounded by the peripheral rigid edge member 1; the crossing position of the radial cable 2 and the transverse cable 3 is limited and fixed through a cable clamp 6; the two ends of the radial cable 2 and the two ends of the transverse cable 3 are connected with the peripheral rigid edge member 1 through adjustable anchors, and the cable force can be changed by adjusting the adjustable anchors after the connection, so that the effect of controlling the cable force is achieved; the membrane 4 is stretched in a cable membrane distribution area surrounded by the peripheral rigid edge member 1, a plurality of cable sleeves 5 on the membrane, which are matched with the radial cables 2, are distributed on the inner side of the membrane 4, and cable bodies of the radial cables 2 are arranged in the cable sleeves 5 on the membrane in a penetrating way, so that the cable bodies play a role of common stress in the stretching process; the edge of the membrane 4 is provided with a membrane clamping plate 7 along the edge contour of the membrane 4, the membrane clamping plate 7 is connected with the peripheral rigid edge member 1 through a plurality of adjusting bolts 8, and the membrane 4 is prestressed through adjusting the length of the adjusting bolts 8.

In this embodiment, the film 4 is preferably a single-layer ETFE film, the light transmittance of the ETFE film can reach 95% at most, and the mass of the ETFE film is only 1% of that of glass in the same area, so that the film plays a good decorative role in the structure, forms a certain initial stiffness in the tensioning process, and plays a certain role in resisting external loads. The upper membrane grommet 5 is disposed inside the membrane 4, and as shown in fig. 3, the upper membrane grommet 5 is a membrane sheet whose both sides are hot-pressed on the membrane 4, the material of the membrane sheet for making the upper membrane grommet 5 is the same as that of the membrane 4, and when the membrane 4 is a single-layer ETFE membrane, the upper membrane grommet 5 is also an ETFE membrane.

In this embodiment, the peripheral rigid edge member 1 is a concrete support member or a steel support member or an aluminium alloy support member; the peripheral rigid edge member 1 is prefabricated according to the cable membrane structure with the required shape, and the transverse cables 3, the radial cables 2, the single-layer ETFE membrane and other related accessories are arranged in the cable membrane distribution area surrounded by the peripheral rigid edge member in the assembling process.

In this embodiment, the cable bodies of the radial cables 2 and the transverse cables 3 are Galfan plating cables or stainless steel cables or FRP cables.

As shown in fig. 4, the adjustable anchor is a fork ear sleeve adjustable anchor, which includes a cable end portion cable head 9, a sleeve 10, a double-lug cable head 11, a first screw 12 and a second screw 13, wherein one end of an inner cavity of the cable end portion cable head 9 is provided with a rivet piece 14, the cable end portion of the radial cable 2 or the transverse cable 3 extends into the inner cavity of the cable end portion cable head 9 and is connected with the cable end portion cable head 9 through the rivet piece 14 (fig. 3 shows that the adjustable anchor is connected with the radial cable 2), the other end of the inner cavity of the cable end portion cable head 9 is in threaded connection with the first screw 12, one end of the double-lug cable head 11 is connected with the peripheral rigid edge member 1 through a rivet 15, the other end of the double-lug cable head 11 is in threaded connection with the second screw 13, and one end of the first screw 12 protruding out of the cable end portion cable head 9 is connected with one end of the second screw 13; when the radial cables 2 and the transverse cables 3 are installed, the length of the first screw 12 and the second screw 13 on the anchorage device is adjusted through threaded connection, so that the length of the radial cables 2 or the transverse cables 3 is controlled to endow and change the prestress of the radial cables 2 or the transverse cables 3.

As shown in fig. 5-9, the cable clamp 6 includes a first clamping piece 16, a second clamping piece 17 and a third clamping piece 18 which are vertically arranged in sequence, a first clamping groove 19 is arranged at the bottom of the first clamping piece 16, a second clamping groove 20 which is matched with the first clamping groove 19 is arranged at the top of the second clamping piece 17, the cable body of the transverse cable 3 is clamped in the first clamping groove 19 and the second clamping groove 20, a third clamping groove 21 is arranged at the bottom of the second clamping piece 17, a fourth clamping groove 22 which is matched with the third clamping groove 21 is arranged at the top of the third clamping piece 18, the radial cable 2 is clamped in the third clamping groove 21 and the fourth clamping groove 22, the first clamping piece 16, the second clamping piece 17 and the third clamping piece 18 are connected through a high-strength bolt 23, and the high-strength bolt 23 is screwed to enable the first clamping piece 16, the second clamping piece 17, the third clamping piece 18 to clamp the radial cable 2 and the transverse cable 3; the membrane 4 opposite to the crossing position of the radial cable 2 and the transverse cable 3 is not provided with a membrane cable sleeve 5, after the radial cable 2 is arranged in the membrane cable sleeve 5 in a penetrating way and connected with the membrane 4, the transverse cable 3 is arranged at the bottom of the membrane cable sleeve, and then the radial cable 2 and the transverse cable 3 are clamped and fixed through a cable clamp 6; the arrangement of the cable clamp 6 can prevent the crossed radial cables 2 and the crossed transverse cables 3 from sliding, and the stability of the structure is ensured.

As shown in fig. 10-11, the film-clamping plate 7 is made of an aluminum alloy material, clamping grooves are formed in both ends of the film-clamping plate 7, adhesive tapes 24 wrap the edge of the film 4, the adhesive tapes 24 are circumferentially distributed along the edge profile of the film 4, the adhesive tapes 24 are clamped in the clamping grooves (the clamping grooves are circular clamping grooves) in one end of the film-clamping plate 7, nuts of the adjusting bolts 8 are clamped in the clamping grooves (the clamping grooves are rectangular clamping grooves) in the other end of the film-clamping plate 7, and the screw ends of the adjusting bolts 8 are in limit connection with the peripheral rigid edge member 1 through the nuts; the number of the adjusting bolts 8 is flexibly selected according to the size and specification of the cable membrane structure.

The invention provides a large-curvature cable membrane structure with cable membrane synergistic effect, which comprises the following steps:

the large curvature membrane structure is first subjected to shape finding. The key node coordinates of the radial cords 2, transverse cords 3, and single layer ETFE membrane (membrane 4 is preferably a single layer ETFE membrane here) are obtained during the form finding process.

And then carrying out single-layer ETFE membrane cutting analysis on the film on the basis of considering the reserved expansion amount. And obtaining the blanking size of the film, processing a single-layer ETFE film in a factory and finishing the processing of the cable sleeve 5 on the film.

Before construction, the radial cords 2 are passed through the on-film jacket 5 on the single-layer ETFE film and the transverse cords 3 are laid at the bottom of the radial cords 2 and their position is fixed by means of the cord clamps 6.

During construction, the radial and transverse cables 2, 3 are first connected to the peripheral rigid edge element 1. After the attachment is complete, the single layer ETFE film will be attached to the peripheral rigid edge member 1 by the film-sandwiching sheet 7.

The prestressing is started after the initial fixing of the structure. Firstly, stretching the radial cables 2 and the transverse cables 3 (hereinafter referred to as inhaul cables) in the cable net with all the crossed radial cables 2 and transverse cables 3 synchronously or step by step to 10 percent of the target cable force for preliminary tensioning. Then, the inhaul cables in all the crossed cable nets are synchronously or sequentially tensioned to 30% of the target cable force step by step. Then, the guys in all the crossed cable nets are synchronously or sequentially tensioned to 70% of the target cable force in a step-by-step mode, and finally the guys in all the crossed cable nets are synchronously or sequentially overstretched to 105% of the target cable force in a step-by-step mode to offset the prestress loss.

The invention forms a stable structure by jointly tensioning the cable net and the single-layer ETFE membrane. In the structure, a single-layer cable net is a main stress structure, and a target curved surface is formed by tensioning cables and controlling the cable force of radial cables 2 and transverse cables 3. The light transmittance of the ETFE film can reach 95% at most, and the mass of the ETFE film is only 1% of that of glass in the same area, so that the ETFE film plays a good decorative role in a structure, forms certain initial rigidity in the tensioning process, and has a certain effect on resisting external loads.

The principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.