CN202492927U - Wooden dual-diagonal-rod type single-layer cylindrical lattice shell - Google Patents

Abstract

A single-layer cylindrical reticulated shell with double oblique bars of wooden structure. It includes multiple longitudinal rods, multiple transverse rods, multiple oblique rods, multiple wooden rod connectors, multiple welded ball joints, several sliding hinge supports and several fixed hinge supports; The rods and the diagonal rods are wooden rods, and a wooden rod connector is respectively installed at the two ends of each longitudinal rod, horizontal rod and diagonal rod; multiple longitudinal rods, multiple horizontal rods and multiple The main body of the single-layer reticulated shell with double oblique rods is connected by a plurality of welded ball joints; the upper ends of several fixed hinge supports are installed on the bottom side of the single-layer reticulated shell by welding Ball joints; the upper ends of several sliding hinge supports are installed on the other side of the bottom of the single-layer cylindrical reticulated shell at a distance from each other. The wooden structure double inclined bar type single-layer cylindrical reticulated shell provided by the utility model has the advantages of light weight, good structural safety, convenient construction, environmental protection and good economy.

Description

A single-layer cylindrical reticulated shell with double oblique rods of wooden structure

technical field

The utility model belongs to the technical field of building structures, in particular to a large-span wooden structure double-slope type single-layer cylindrical reticulated shell.

Background technique

In recent years, in order to meet the functional requirements of buildings, large-span spatial structures have been increasingly used in engineering practice, such as public and industrial buildings such as terminals, convention centers, toll stations, and large-span coal sheds. Among many structural forms, reticulated shell structure is a kind of curved surface grid structure, which has the characteristics of simple structure of bar system and reasonable force of thin shell structure. Easy installation and so on. The reticulated shell structure in our country has been applied in the early 1950s. At present, a large number of reticulated shell structures have been built and most of them are landmark buildings in various regions, such as Beijing National Grand Theater, Tianjin Gymnasium, Shanghai Ten Thousand People Stadium, and Jiaxing Power Plant. coal shed etc.

As a special form of reticulated shell structure, the outer profile of the double-slanted bar type single-layer cylindrical reticulated shell is formed by a straight line moving in parallel along two curves with the same curvature, and it has longitudinal bars, transverse bars and oblique bars. The horizontal bar bisects the curve, the longitudinal bar crosses the bisection point of the horizontal bar and is parallel to the arc of the cylinder, the longitudinal bar and the horizontal bar form a grid, and an oblique bar is added in each grid, and the oblique bar is between the longitudinal bar and the horizontal bar. The grids formed by the horizontal bars intersect each other to form a double-slanted bar type single-layer cylindrical reticulated shell. It has simple shape, simple node structure, beautiful appearance and high structural rigidity. It is widely used in industrial buildings. But at present, the structure mainly uses steel, and there are no examples or research reports on the application of wood to the double-slope single-layer cylindrical reticulated shell structure.

In my country, wood is a renewable material with abundant resources and a short growth cycle. After simple processing, it can become a structural member with excellent mechanical properties. If it is applied to reticulated shell structures, it will broaden the application field of wood structures and Promote the development of green and environmentally friendly buildings. In terms of mechanical properties, wood has good tensile, compressive and bending strengths. It is a natural building material and has been used in ancient times. However, the physiological bending formed during the natural growth of wood and the difference in mechanical properties between horizontal and vertical grains affect its mechanical properties to a certain extent, limiting its application range. With the advancement of science and technology, although the existing processing equipment can guarantee the shape accuracy of the processed wooden rods, its application range has not been expanded due to the constraints of the connection method of the wooden structure. In terms of wood structure connection, the common joint connection methods are lashing, mortise and tenon, and notch. The reliability of joint connection is relatively low, and it is now common in architectural landscapes and low-rise civil buildings of low importance. In terms of construction engineering applications, most of the current methods are to crush it and mix it with other materials to make new building panels. Due to the addition of adhesives, it will bring more or less pollution to the indoor environment, and the direct use of natural There are few cases where wood is used as a stressed member of a large-span space reticulated shell structure. Therefore, when the concept of low-carbon, environmentally friendly and green buildings is widely recognized today, it is of great significance to study and broaden the application fields of wood structures.

How to improve the reliability of the connection joints of wooden structures, give full play to the mechanical properties of wood, and use reasonable calculation methods to design wooden structures has also become a key issue restricting the expansion of the application field of wooden structures.

Contents of the invention

In order to solve the above-mentioned problems, the purpose of the utility model is to provide a wooden double-slope type single-layer cylindrical reticulated shell with good seismic performance, convenient construction, high safety and environmental protection.

In order to achieve the above-mentioned purpose, the wooden structure double-slanted-rod single-layer cylindrical reticulated shell provided by the utility model includes a plurality of longitudinal rods, a plurality of transverse rods, a plurality of oblique rods, a plurality of wooden rod connectors, and a plurality of welding balls. Nodes, several sliding hinge supports and several fixed hinge supports; the longitudinal rods, transverse rods and diagonal rods are wooden rods, and a wooden rod is installed at both ends of each longitudinal rod, horizontal rod and diagonal rod Connectors; a plurality of longitudinal rods, a plurality of transverse rods and a plurality of oblique rods with wooden rod connectors are connected by a plurality of welded ball joints to form a double oblique rod type single-layer cylindrical reticulated shell body in a traditional shape; the The wooden rod connectors include steel hoops, end plates, cone heads and stirrups; the steel hoops are set on the outer circumference of the ends of the longitudinal rods, transverse rods and oblique rods; the end plates are installed on the steel hoops. On the circumference of the outer end; the cone head is a hollow circular platform structure, its upper and lower bottom surfaces are open, the edge of the lower bottom surface is connected to the outside of the end plate, and the edge of the upper bottom surface is welded on the welded ball node; the stirrup is wound on the steel hoop On the outer peripheral surface, it is used to fasten the steel ferrule and the longitudinal rod, transverse rod or oblique rod; the welded ball joints are all steel hollow spheres, and each welded ball joint is connected with multiple wooden rod connectors; several The upper end of a fixed hinge support is installed at a distance from the welded ball node on the bottom side of the single-layer cylindrical reticulated shell, and the lower end is fixed on the top of the structural column; the upper ends of several sliding hinge supports are installed on the single-layer cylindrical reticulated shell at a distance The solder ball node on the other side of the bottom, the lower end is set on the top of the structural column in a movable manner.

The outer peripheral surfaces of the two ends of the longitudinal rods, transverse rods and oblique rods are formed with multiple grooves at a distance along the circumferential direction, while the inner peripheral surface of the steel ferrule protrudes along the circumferential direction to form multiple grooves. The flanges can be respectively embedded in the above-mentioned multiple grooves.

The wooden structure double-slope bar type single-layer cylindrical reticulated shell provided by the utility model has the following advantages: 1) Good seismic performance: after calculation by finite element analysis software, it is found that the stress condition of a single wooden bar and the static and dynamic response of the whole structure Both meet the design and use requirements, and the anti-seismic performance is improved. 2) Convenient construction: Due to the low density of wood, the splicing of rods can be completed by a single worker, which can reduce the labor intensity of workers and the density of personnel on the working surface, which is conducive to improving construction quality and speeding up construction. 3) High safety: After calculation, it is found that the vertical deformation of the wooden structure double-slope single-layer cylindrical reticulated shell under the earthquake is smaller than that of the steel structure double-slope single-layer cylindrical reticulated shell with the same cross-sectional area, indicating that the earthquake effect The double inclined bar type single-layer cylindrical reticulated shell of the lower wooden structure has little damage to the roofing material and improves the safety. 4) Environmental protection and good economy: my country has rich timber resources, convenient material selection, low timber price, and is a green and environmentally friendly renewable resource. Therefore, the economic and environmental advantages of using wooden structure double-slope-rod single-layer cylindrical reticulated shells are both very prominent.

Description of drawings

Fig. 1 is a plan view of the structure of the wooden structure double inclined bar type single-layer cylindrical reticulated shell provided by the utility model.

Fig. 2 is a three-dimensional view of the structure of the single-layer cylindrical reticulated shell with wooden structure double inclined rods provided by the utility model.

Fig. 3 is a sectional view along A-A in Fig. 1 .

Fig. 4 is a schematic diagram of the structure of wooden rod connectors connected to the ends of longitudinal rods, transverse rods or oblique rods in the wooden structure double inclined rod type single-layer cylindrical reticulated shell provided by the present invention.

Fig. 5 is a schematic diagram of the structure of welded ball joints in the wooden structure double-slope type single-layer cylindrical reticulated shell provided by the utility model.

Detailed ways

The wood structure double-slope type single-layer cylindrical reticulated shell provided by the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Fig. 1-Fig. 5, the wooden structure double-slanted bar type single-layer cylindrical reticulated shell provided by the utility model includes a plurality of longitudinal bars 1, a plurality of transverse bars 2, a plurality of oblique bars 3, and a plurality of wooden bars Connectors 4, multiple welded ball joints 5, several sliding hinge supports 6 and several fixed hinge supports 7; wherein the longitudinal bar 1, the transverse bar 2 and the oblique bar 3 are wooden bars, and each longitudinal bar 1, The two ends of the transverse bar 2 and the oblique bar 3 are respectively equipped with a wooden rod connector 4; the multiple longitudinal rods 1, the multiple horizontal rods 2 and the multiple oblique rods 3 with the wooden rod connector 4 utilize multiple Welded ball joints 5 are connected to form the main body of a double-slope type single-layer cylindrical reticulated shell of traditional shape; the wooden rod connector 4 includes a steel hoop 8, an end plate 9, a cone head 10 and a stirrup 11; wherein the steel sleeve The hoop 8 is set on the outer peripheral surface of the end of the longitudinal bar 1, the transverse bar 2 and the oblique bar 3; the end plate 9 is installed on the outer end circumference of the steel hoop 8; the cone head 10 is a hollow circular platform structure, on which, The lower bottom surface is open, the edge of the lower bottom surface is connected to the outer side of the end plate 9, and the edge of the upper bottom surface is welded on the welded ball joint 5; the stirrup 11 is wound on the outer circumferential surface of the steel hoop 8, which is used to connect the steel hoop 8 and the longitudinal bar 1, the transverse bar 2 or the oblique bar 3 are tightened; the welded ball joints 5 are steel hollow spheres, and each welded ball joint 5 is connected with a plurality of wooden rod connectors 4; several fixed hinge supports The upper end of the seat 7 is installed at a distance from the welded ball node 5 on the bottom side of the single-layer cylindrical reticulated shell, and the lower end is fixed on the top of the structural column; the upper ends of several sliding hinge supports 6 are installed at the bottom of the single-layer cylindrical reticulated shell at a distance The lower end of the welding ball node 5 on the other side is movably arranged on the top of the structural column.

The outer peripheral surfaces of the two ends of the longitudinal rod 1, the transverse rod 2 and the oblique rod 3 are formed with a plurality of grooves at a distance along the circumferential direction, and the inner peripheral surface of the steel ferrule 8 protrudes along the circumferential direction. There are multiple rings of flanges that can be respectively embedded in the multiple grooves.

The assembly process of the wooden structure double inclined bar type single-layer cylindrical reticulated shell provided by the utility model is as follows: first, the steel hoop 8 is installed on the outer end circumferential surface of the longitudinal bar 1, the transverse bar 2 and the oblique bar 3, and the The grooves on the longitudinal bar 1, the transverse bar 2 and the oblique bar 3 are aligned with the flanges on the steel hoop 8 and clamped tightly, and the stirrups 11 are wound on the outer circumferential surface of the steel hoop 8, and the steel hoop 8 and the longitudinal bar 1, the transverse bar 2 or the oblique bar 3 are clamped tightly, and then the end plate 9 is welded on the outer end circumference of the steel ferrule 8, and then the edge of the bottom surface of the cone head 10 is welded to the outer end of the end plate 9 On the circumference, the edge of the upper bottom surface of the cone head 10 is welded on the welding ball node 5 . A plurality of wooden pole connectors 4 with different spatial angles are connected to a welded ball node 5, and are sequentially connected to form the main body of a double-slanted rod-type single-layer cylindrical reticulated shell. The upper ends of several fixed hinge supports 7 and sliding hinge supports 6 are installed on the welded ball joints 5 at the bottom of both sides of the main body of the reticulated shell respectively at a distance, and then the above fixed hinge supports 7 and sliding hinge supports 6 The lower ends are respectively set on the top of the structural columns, thus forming a wooden double-slope type single-layer cylindrical reticulated shell.

In order to test the anti-seismic performance of the wooden structure double-slope bar type single-layer cylindrical reticulated shell provided by the utility model, the applicant used the finite element software ANSYS to compare the timber structure provided by the utility model and Table 1 shows the maximum vertical displacement within 8 s of the existing steel structure double-slope-rod single-layer cylindrical reticulated shell under the action of the horizontal seismic EL-Centro (1940) wave within 8 s. It can be seen from Table 1 that the amplitude of the displacement change of the single-layer cylindrical reticulated shell with double inclined bars of wooden structure is smaller than that of the single-layer cylindrical reticulated shell with double inclined bars of steel structure under the action of earthquake, which shows that the single-layer reticulated column with double inclined bars of wooden structure The surface reticulated shell is relatively less affected by the earthquake damage, and the damage to the roof material is relatively light. It is proved that the wooden structure double-slope type single-layer cylindrical reticulated shell provided by the utility model has good anti-seismic performance and safe and reliable structure.

Table 1

structure type Maximum displacement Wood structure 32.4mm steel structure 48.1mm

Claims (2)

1. a kind of wooden structure double inclined bar type single-layer cylindrical reticulated shell, is characterized in that: described wooden structure double inclined bar type single layer cylindrical reticulated shell comprises many longitudinal bars (1), many transverse bars ( 2), multiple oblique rods (3), multiple wooden rod connectors (4), multiple welded ball joints (5), several sliding hinge supports (6) and several fixed hinge supports (7) ; Wherein the longitudinal bar (1), the transverse bar (2) and the oblique bar (3) are wooden poles, and the two ends of each longitudinal bar (1), the transverse bar (2) and the oblique bar (3) are respectively equipped with A wooden rod connector (4); a plurality of longitudinal rods (1), a plurality of transverse rods (2) and a plurality of diagonal rods (3) with a wooden rod connector (4) utilize a plurality of welded ball joints ( 5) The main body of the double-slope type single-layer cylindrical reticulated shell connected into a traditional shape; the wooden rod connector (4) includes a steel ferrule (8), an end plate (9), a cone head (10) and a hoop Rib (11); wherein the steel hoop (8) is set on the outer peripheral surface of the end of the longitudinal bar (1), the transverse bar (2) and the oblique bar (3); the end plate (9) is installed on the steel hoop On the circumference of the outer end of (8); the conical head (10) is a hollow circular truncated structure, its upper and lower bottom surfaces are open, the edge of the lower bottom surface is connected to the outside of the end plate (9), and the edge of the upper bottom surface is welded to the welded ball node (5); stirrups (11) are wound on the outer circumferential surface of the steel hoop (8), and are used to connect the steel hoop (8) to the longitudinal bar (1), transverse bar (2) or oblique bar ( 3) Tightening; the welded ball joints (5) are all steel hollow spheres, and each welded ball joint (5) is connected with multiple wooden rod connectors (4); the upper ends of several fixed hinge supports (7) The welded ball joints (5) installed on the bottom side of the single-layer cylindrical reticulated shell at intervals, the lower end is fixed on the top of the structural column; the upper ends of several sliding hinge supports (6) are installed at the bottom of the single-layer cylindrical reticulated shell at intervals The lower end of the welding ball node (5) on the other side is movably arranged on the top of the structural column. 2. The wooden structure double-slanted bar type single-layer cylindrical reticulated shell according to claim 1, characterized in that: the two ends of the longitudinal bar (1), the transverse bar (2) and the diagonal bar (3) A plurality of grooves are formed on the outer peripheral surface at intervals along its circumferential direction, and a plurality of rings of protrusions which can be respectively embedded in the plurality of grooves are formed on the inner peripheral surface of the steel ferrule (8) protruding along its circumferential direction. edge.

Images