CN203834664U - Spatial truss external pre-stress exerting structure - Google Patents
Spatial truss external pre-stress exerting structure Download PDFInfo
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- CN203834664U CN203834664U CN201420265806.9U CN201420265806U CN203834664U CN 203834664 U CN203834664 U CN 203834664U CN 201420265806 U CN201420265806 U CN 201420265806U CN 203834664 U CN203834664 U CN 203834664U
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Abstract
The utility model discloses a spatial truss external pre-stress exerting structure. A supporting rod is arranged in the space of a spatial truss and supports a pre-stress inhaul cable, and the inhaul cable is formed into a quadratic parabola shape. Pre-stress is exerted on the spatial truss through the inhaul cable in the quadratic parabola shape, then upward lifting force can be better provided for the spatial truss, and therefore deflection deformation of the structure is more effectively controlled, the large span of the spatial truss is achieved, and the requirements of design are met. The spatial truss external pre-stress exerting structure is a novel, safe and more effective pre-stress exerting mode and is suitable for large-span steel structures such as the spatial truss.
Description
Technical field
The utility model belongs to design and the building technology field of large-span prestressed steel structure, relates to a kind of space truss external prestressing and applies structure.
Background technology
At present, prestressing technique, because of its significant structural advantage, has been widely applied to the every field of structure.The large span that prestressing technique can implementation structure, the control of deflection deformation and system merrily and lightheartedly attractive in appearance.For space truss structure, conventionally adopt prestressing with bond tension technology, in truss lower chord, prestressed cable is set, but for the space truss structure of plane that there is no radian, prestressed cable in lower chord is very little to the upwards lifting force of structure generation, so kind method for applying prestressing force is unsatisfactory to the control effect of structural deflection.
Utility model content
In order to realize the large span of space truss, and the energy deflection deformation of control structure preferably, the utility model adopts a kind of novel prestress application technical method, it is external prestressing tension technology method, the method is compared to prestressing with bond method for stretching, better reduce the vertical deformation of space truss, more desirable to the effect of structural deflection control.
The utility model solves the technical scheme that its technical problem adopts:
A kind of space truss external prestressing applies structure, it is characterized in that, in space truss space, strut is set, support prestressed cable, make drag-line form second-degree parabola shape, drag-line by second-degree parabola shape applies prestressing force to space truss, thus the deflection deformation of more effective control structure.
Space truss comprises many web members that connect between lower chord, upper chord and a lower chord of two parallel upper chords of top, below.
In the space that upper chord, lower chord and web member form, along truss length direction, drag-line is set, the two ends of drag-line are connected on two reinforcement web members between upper chord end.
The strut being connected is set between the web member between space truss upper chord and drag-line.
Strut one end is connected on two web members between upper chord, and the other end is connected on drag-line, supports and has applied prestressed drag-line, and strut quantity and position arrange according to making drag-line form second-degree parabola shape.
Described strut is round steel pipe.
Based on prestressing technique, round steel pipe strut is set in space truss space, support the prestressed cable of second-degree parabola shape, now prestressed cable has certain radian, thereby better provides lifting force upwards to space truss, the deflection deformation of control structure.
The utility model compared with prior art, has the following advantages:
(1) span of increase space truss;
(2) more effectively control the deflection deformation of space truss;
(3) contactless with agent structure, without prestressing force friction loss;
(4) applicability is strong, also can analogy for the prestress application of other forms of large-span steel;
(5), in structural element altitude range, do not affect building clear height;
(6) easy construction;
(7) meet code requirement, safe and reliable.
Brief description of the drawings
Fig. 1 is axonometric drawing of the present utility model;
Fig. 2 is plan view of the present utility model;
Fig. 3 is phantom drawing of the present utility model;
Fig. 4 is elevation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.Following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection domain of the present utility model with this.
As Figure 1-Figure 4, space truss comprises the many web members 3 that connect between a lower chord 2, upper chord 1 and the lower chord 2 of two parallel upper chords 1 of top, below to structure of the present utility model, and space truss longitudinal section forms del.In the space that upper chord 1, lower chord 3 and web member 3 form, along truss length direction, drag-line 4 is set, the two ends of drag-line 4 are connected to and approach on two reinforcement web members between upper chord end.
Based on prestressing technique, the web member between space truss upper chord 1 arranges downward round steel pipe for 31 times as strut 5.Strut 5 one end are connected on two web members 31 between upper chord, and the other end is connected on drag-line 4, have applied prestressed drag-line thereby support, and strut 5 positions according to second-degree parabola with the particular location of drag-line 4 in space truss space.Now prestressed cable has certain radian, therefore can better provide lifting force upwards to space truss with respect to prestressing with bond method for stretching, thus the deflection deformation of control structure more effectively.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and distortion, these improvement and distortion also should be considered as protection domain of the present utility model.
Claims (6)
1. space truss external prestressing applies a structure, it is characterized in that, in space truss space, strut is set, and supports prestressed cable, makes drag-line form second-degree parabola shape, by the drag-line of second-degree parabola shape, space truss is applied to prestressing force.
2. space truss external prestressing according to claim 1 applies structure, it is characterized in that, space truss comprises many web members that connect between lower chord, upper chord and a lower chord of two parallel upper chords of top, below.
3. space truss external prestressing according to claim 2 applies structure, it is characterized in that, in the space that upper chord, lower chord and web member form, along truss length direction, drag-line is set, and the two ends of drag-line are connected on two web members between upper chord end.
4. apply structure according to the space truss external prestressing described in claim 2 or 3, it is characterized in that, the strut being connected is set between the web member between space truss upper chord and drag-line.
5. space truss external prestressing according to claim 4 applies structure, it is characterized in that, strut one end is connected on two web members between upper chord, the other end is connected on drag-line, support has applied prestressed drag-line, and strut quantity and position arrange according to making drag-line form second-degree parabola shape.
6. space truss external prestressing according to claim 1 applies structure, it is characterized in that, described strut is round steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420265806.9U CN203834664U (en) | 2014-05-23 | 2014-05-23 | Spatial truss external pre-stress exerting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420265806.9U CN203834664U (en) | 2014-05-23 | 2014-05-23 | Spatial truss external pre-stress exerting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203834664U true CN203834664U (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420265806.9U Active CN203834664U (en) | 2014-05-23 | 2014-05-23 | Spatial truss external pre-stress exerting structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN203834664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032833A (en) * | 2014-05-23 | 2014-09-10 | 苏州工业园区设计研究院股份有限公司 | External pre-stressing exerting structure of three-dimensional truss |
-
2014
- 2014-05-23 CN CN201420265806.9U patent/CN203834664U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032833A (en) * | 2014-05-23 | 2014-09-10 | 苏州工业园区设计研究院股份有限公司 | External pre-stressing exerting structure of three-dimensional truss |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Suzhou City, Jiangsu province 215028 Industrial Park Suzhou Bada Street No. 111 Patentee after: ARTS GROUP CO., LTD. Address before: Suzhou City, Jiangsu province 215126 Industrial Park Shengpu Kim Seung Road No. 12 Patentee before: Suzhou Industrial Park Design & Research Institute Co., Ltd. |