CN112323976A - Novel large-span repairable assembly type node and assembly method - Google Patents
Novel large-span repairable assembly type node and assembly method Download PDFInfo
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- CN112323976A CN112323976A CN202011191381.8A CN202011191381A CN112323976A CN 112323976 A CN112323976 A CN 112323976A CN 202011191381 A CN202011191381 A CN 202011191381A CN 112323976 A CN112323976 A CN 112323976A
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- round steel
- steel plate
- repairable
- pipe section
- steel pipe
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/32—Arched structures; Vaulted structures; Folded structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/32—Arched structures; Vaulted structures; Folded structures
- E04B2001/3235—Arched structures; Vaulted structures; Folded structures having a grid frame
- E04B2001/3241—Frame connection details
- E04B2001/3247—Nodes
Abstract
The invention discloses a novel large-span repairable assembly type node and an assembly method, which belong to the field of large-span space structure engineering and can be applied to a large-span single-layer spherical reticulated shell; it includes: the hollow ball is connected with a plurality of round steel tube connecting components arranged on the hollow ball; the round steel pipe connecting assembly comprises a repairable connecting piece, a short cantilever round steel pipe section and a common round steel pipe section, and the yield strength of the repairable connecting piece is lowest; the one end of short cantilever round steel pipe section is installed on the clean shot, first round steel plate is installed to the other end, and the one end that can restore the connecting piece links to each other with first round steel plate through first bolt crowd, and the other end passes through second bolt crowd and links to each other with the second round steel plate of installing in ordinary round steel pipe section one end. The welding connection part of the invention can be processed and finished in a factory, and can be pre-installed in the factory, thereby avoiding the field high-altitude welding and greatly improving the construction efficiency.
Description
Technical Field
The invention relates to the technical field of large-span space structure engineering, in particular to a novel large-span repairable assembly type node and an assembly method which can be applied to a large-span single-layer spherical reticulated shell.
Background
The large-span space structure is more and more favored by the building industry due to the light structure, beautiful shape and various forms, and is widely applied to public places such as airports, gymnasiums, swimming pools and the like; however, the problems of large construction difficulty, long construction period, high construction cost and the like of the large-span space structure become difficult problems for hindering the development of the large-span space structure, and the large-span space structure is more and more reflected by the practical strength of the national building technology.
Meanwhile, earthquake disasters and the like can cause great damage to buildings and bring great property loss. In the sakazah earthquake in 1995 and the northern mountain earthquake in 1994, a great deal of damage occurs to the large span spatial structure nodes, resulting in high post-earthquake repair and even reconstruction costs. In 2009, american and japanese scholars put forward the concept of "recoverable function city" for the first time, and the concept also becomes a new direction for cooperation of seismic engineering in the future. A node loss control area is researched, the node loss area is controlled at a replaceable component, the characteristic of sustainable development of modern buildings is met, and the requirement of economic development is met.
The most important node in the large-span space structure is that the node plays the roles of connecting members, converging and transmitting; at present, the large-span space structure node mainly comprises a welded hollow ball node and a bolt ball node, the welded hollow ball node needs to be welded at high altitude, the construction difficulty is high, the high-altitude construction welding seam quality has great influence, the standardized construction and batch production are difficult to realize, and the standard of green buildings advocated by the state is not met; the bolt ball joint has poor bending resistance, high requirement on machining precision, complex installation and machining process and easy occurrence of false twisting.
At present, the repairable nodes of the large-span space structure are fewer, and on the background, the invention provides a novel large-span repairable assembly type node which can be applied to a large-span single-layer spherical reticulated shell.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a novel large-span repairable assembly type node and an assembly method, which can be applied to a large-span single-layer spherical reticulated shell.
The invention discloses a novel large-span repairable assembled node, which comprises: the hollow ball is connected with a plurality of round steel tube connecting components arranged on the hollow ball;
the round steel pipe connecting assembly comprises a repairable connecting piece, a short cantilever round steel pipe section and a common round steel pipe section, and the yield strength of the repairable connecting piece is lowest; the one end of short cantilever round steel pipe section is installed first round steel plate is installed to the clean shot on, the other end, but the one end of repairable connecting piece through first bolt crowd with first round steel plate links to each other, the other end passes through second bolt crowd with install the second round steel plate of ordinary round steel pipe section one end links to each other.
As a further improvement of the invention, one end of the short cantilever round steel pipe section is welded and fixed with the hollow ball, and the other end of the short cantilever round steel pipe section is welded and fixed with the first round steel plate; and the second round steel plate is fixedly welded with the common round steel pipe section.
As a further improvement of the invention, the repairable connecting piece comprises a cross steel plate, a third round steel plate and a fourth round steel plate;
the third round steel plate and the fourth round steel plate are respectively welded at two ends of the cross-shaped steel plate, and the yield strength of the cross-shaped steel plate is smaller than that of the short cantilever round steel pipe section, the common round steel pipe section, the first round steel plate, the second round steel plate, the third round steel plate and the fourth round steel plate;
a plurality of groups of corresponding bolt holes are formed in the third round steel plate and the first round steel plate, and the first round steel plate and the third round steel plate are connected through the first bolt group;
and a plurality of groups of corresponding bolt holes are formed in the fourth round steel plate and the second round steel plate, and the second round steel plate and the fourth round steel plate are connected through the second bolt group.
As a further improvement of the present invention, the first screw of the first bolt group penetrates from the first round steel plate to a third round steel plate, and the first nut of the first bolt group is screwed and fixed on the third round steel plate; the first screw is fixedly welded on the first round steel plate or directly penetrates through bolt holes of the first round steel plate and a third round steel plate;
a second screw of the second bolt group penetrates from the second round steel plate to a fourth round steel plate, and a second nut of the second bolt group is screwed and fixed on the fourth round steel plate; and the second screw rod is welded and fixed on the second round steel plate.
As a further improvement of the invention, the cross steel plate, the first round steel plate, the second round steel plate, the third round steel plate and the fourth round steel plate are consistent in thickness.
The invention also discloses an assembly method of the novel large-span repairable assembly type node, which comprises the following steps:
welding and fixing a first round steel plate at one end of the short cantilever round steel pipe section;
the third round steel plate and the fourth round steel plate are welded and fixed at two ends of the cross-shaped steel plate to form a repairable connecting piece;
the first round steel plate and the third round steel plate are connected through the first bolt group, so that the repairable connecting piece and the short cantilever round steel pipe section are installed; the other end of the short cantilever round steel pipe section is welded and fixed on the hollow ball;
welding a second screw rod of the second bolt group on a second round steel plate, and then welding and fixing the second round steel plate at one end of the common round steel pipe section;
and a common round steel pipe section is arranged at the other end of the repairable connecting piece, and the second screw cap is screwed up correspondingly, so that the installation of the repairable connecting piece and the common round steel pipe section is realized.
As a further improvement of the invention, the node is suitable for a large-span single-layer spherical reticulated shell, and the number of the circular steel tube connecting assemblies is determined according to the number of rod pieces connected in the reticulated shell by the node.
As a further improvement, during field construction, the installation of the repairable connecting piece and the common round steel pipe section can be realized only by screwing the second nut; the rest procedures are finished in the factory.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the cross section of the cross steel plate in the repairable connecting piece is designed or the material strength of the repairable connecting piece is reduced, so that the repairable connecting piece can yield before other components under the environment of natural disasters such as earthquakes, the main body part is protected, and the disaster loss and the repair cost caused by earthquakes are reduced; meanwhile, the buckling deformation of the cross-shaped steel plate of the repairable connecting piece is used for dissipating earthquake energy, so that the steel plate has good ductility and can prolong the time of emergency reaction of people when an earthquake occurs;
2. the joint welding parts can be finished in a factory, standardized production can be realized, pre-installation can be performed in the factory, welding operation is not needed on site, only the residual bolts which are not installed are screwed, the construction efficiency is greatly improved, the construction quality is improved, the construction period and the construction cost are reduced, and the standard of green buildings advocated vigorously by the state is met;
3. the node of the invention reserves the hollow sphere of the traditional welding hollow sphere, is beneficial to connecting a plurality of rod pieces with different angles at the same time, and improves the application range of the node.
Drawings
FIG. 1 is a three-dimensional diagram of a novel large-span repairable fabricated node configuration form as disclosed in one embodiment of the present invention;
FIG. 2 is a schematic view of the round steel pipe connection assembly shown in FIG. 1;
FIG. 3 is a partially disassembled installation schematic of FIG. 1;
FIG. 4 is a schematic view of the pre-installation of FIG. 3;
fig. 5 is a schematic view of the repairable connector of fig. 1.
In the figure:
10. hollow spheres; 20. a round steel pipe connecting component; 30. a repairable connector; 31. a cross steel plate; 32. a third round steel plate; 33. a fourth round steel plate; 40. short cantilever round steel pipe sections; 41. a first round steel plate; 50. a common round steel pipe section; 51. a second round steel plate; 60. a first bolt group; 61. a first screw; 62. a second nut; 70. a second bolt group; 71. a second screw; 72. a second nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
the invention provides a novel large-span repairable assembly type node and an assembly method, which belong to the field of large-span space structure engineering and can be applied to a large-span single-layer spherical reticulated shell; it includes: the hollow ball is connected with a plurality of round steel tube connecting components arranged on the hollow ball; the round steel pipe connecting assembly comprises a repairable connecting piece, a short cantilever round steel pipe section and a common round steel pipe section, and the yield strength of the repairable connecting piece is lowest; the one end of short cantilever round steel pipe section is installed on the clean shot, first round steel plate is installed to the other end, and the one end that can restore the connecting piece links to each other with first round steel plate through first bolt crowd, and the other end passes through second bolt crowd and links to each other with the second round steel plate of installing in ordinary round steel pipe section one end. The welding connection part of the invention can be processed and finished in a factory, and can be pre-installed in the factory, thereby avoiding the field high-altitude welding and greatly improving the construction efficiency. According to the invention, the plastic hinge is transferred to the repairable connecting piece by controlling the section size of the cross-shaped steel plate in the repairable connecting piece, so that the circular steel tube and the bolt are protected, and necessary conditions are provided for realizing node repairable; the node only needs to be changed and can realize the function of reuse after destroying after the earthquake, and repairable connecting piece dismantles simply simultaneously, and to a great extent has reduced the loss of property that the earthquake brought.
The repairable connecting piece consists of the cross-shaped steel plate and the round steel plates at two ends of the cross-shaped steel plate, and can be respectively connected with the common round steel pipe section and the short cantilever round steel pipe section through the bolt group, so that the repairable connecting piece is convenient to install and detachable; the plastic hinge is controlled at the repairable connecting piece by controlling the section size of the cross-shaped steel plate in the repairable connecting piece, so that the damage of the rod piece and other members is protected, and only the repairable connecting piece needs to be replaced after the node is damaged; the repairable connecting piece has good visibility and replacement interpretability, and can be seen by naked eyes when the repairable connecting piece deforms, so that a good early warning effect can be achieved; the welding parts of the node can be processed in a factory, so that standardized production is realized, the node can be pre-installed in the factory, the repairable connecting piece and the short cantilever round steel pipe section are assembled by using the bolt, and the site construction process is simplified; the invention reserves the hollow ball in the traditional welded hollow ball, can connect a plurality of rod pieces with different angles, and improves the application range of the node.
The two ends of the repairable connecting piece are respectively connected with the common round steel pipe section and the short cantilever round steel pipe section through the bolt groups, the buckling deformation of the crossed steel plate of the repairable connecting piece dissipates the earthquake energy, the damage process of the main structural body member affected by the earthquake is delayed, the repairable cost of the structure after the earthquake is reduced, and the repairable connecting piece can be applied to the part, which is greatly affected by the earthquake, of the single-layer spherical reticulated shell node, and the structural system is effectively protected. A novel large-span repairable assembly type node has a specific processing and mounting procedure, one end of a bolt is welded on a round steel plate during processing, then the round steel plate is welded on a common round steel pipe, and a repairable connecting piece is connected by a bolt group during final mounting to screw a nut; the same is true of the short cantilevered round steel pipe section and the repairable connecting piece machining and mounting process.
Example (b):
as shown in fig. 1 to 5, the present invention provides a novel large-span repairable fabricated node, comprising: the hollow ball comprises a hollow ball 10 and a plurality of round steel tube connecting assemblies 20 arranged on the hollow ball;
the round steel pipe connecting assembly 20 comprises a repairable connecting piece 30, a short cantilever round steel pipe section 40 and a common round steel pipe section 50; one end of the short cantilever round steel pipe section 40 is installed on the hollow ball 10, the other end of the short cantilever round steel pipe section is installed with a first round steel plate 41, one end of the repairable connecting piece 30 is connected with the first round steel plate 41 through a first bolt group 60, and the other end of the repairable connecting piece is connected with a second round steel plate 51 installed at one end of the common round steel pipe section 50 through a second bolt group 70; at the same time, the present invention minimizes the yield strength of the repairable connection 30 in the above-described components.
Specifically, the method comprises the following steps:
one end of a short cantilever round steel pipe section 40 is fixedly welded with a hollow ball 10, and the other end of the short cantilever round steel pipe section is fixedly welded with a first round steel plate 41; the second round steel plate 51 is welded and fixed with the ordinary round steel pipe section 50.
The repairable connecting piece 30 of the invention comprises a cross steel plate 31, a third round steel plate 32 and a fourth round steel plate 33; the third round steel plate 32 and the fourth round steel plate 33 are respectively welded at the two ends of the cross-shaped steel plate 31, and the yield strength of the cross-shaped steel plate 31 is smaller than that of the short cantilever round steel pipe section 40, the common round steel pipe section 50, the first round steel plate 41, the second round steel plate 51, the third round steel plate 32 and the fourth round steel plate 33; a plurality of corresponding bolt holes are arranged on the third round steel plate 32 and the first round steel plate 41, and the first round steel plate 41 and the third round steel plate 32 are connected through a first bolt group 60; the fourth round steel plate 33 and the second round steel plate 51 are provided with a plurality of corresponding bolt holes, and the second round steel plate 51 and the fourth round steel plate 33 are connected through a second bolt group 70. Furthermore, the first screw 61 of the first bolt group 60 penetrates from the first round steel plate 41 to the third round steel plate 32, and the first nut 62 of the first bolt group 60 is screwed and fixed on the third round steel plate 32; the first screw 61 is welded and fixed on the first round steel plate 41, or directly penetrates through bolt holes of the first round steel plate 41 and the third round steel plate 32; the second screw 71 of the second bolt group 70 penetrates from the second round steel plate 51 to the fourth round steel plate 33, and the second nut 72 of the second bolt group 70 is screwed and fixed on the fourth round steel plate 33; wherein, the second screw 71 is welded and fixed on the second round steel plate 51.
Furthermore, the repairable connecting piece is guaranteed to yield before the rod piece, and meanwhile, sufficient operating space is reserved for bolt screwing; the cross steel plate 31, the first round steel plate 41, the second round steel plate 51, the third round steel plate 32, and the fourth round steel plate 33 have the same thickness.
Further, the node is suitable for a large-span single-layer spherical reticulated shell, and the number of the round steel tube connecting assemblies is determined according to the number of the rod pieces connected in the reticulated shell by the node.
The invention provides a novel assembly method of a large-span repairable assembly type node, which comprises the following steps:
step 1, welding and fixing a first round steel plate 41 at one end of a short cantilever round steel pipe section 40; or, the first screw 61 is welded and fixed on the first round steel plate 41, and then the first round steel plate 41 is welded and fixed on one end of the short cantilever round steel pipe section 40;
step 2, welding and fixing a third round steel plate 32 and a fourth round steel plate 33 at two ends of a cross-shaped steel plate 31 to form a repairable connecting piece 30;
step 3, the first screw 61 of the first bolt group 60 penetrates through the corresponding bolt hole, and the first round steel plate 41 and the third round steel plate 32 are connected through the first nut 62, so that the repairable connecting piece 30 and the short cantilever round steel pipe section 40 are installed; the other end of the short cantilever round steel pipe section 40 is welded and fixed on the hollow ball 10; or, the other end of the short cantilever round steel pipe section 40 is welded and fixed on the hollow sphere 10, and then the first screw 61 welded and fixed on the first round steel plate 41 passes through the bolt hole of the third round steel plate 32 and is connected with the first round steel plate 41 and the third round steel plate 32 through the first nut 62, so that the repairable connecting piece 30 and the short cantilever round steel pipe section 40 are installed;
step 4, welding the second screw rods 71 of the second bolt group 70 on the second round steel plate 51, and then welding and fixing the second round steel plate 51 at one end of the common round steel pipe section 50; wherein, in this step, the order thereof may not be reversed;
and 5, installing the common round steel pipe section 50 at the other end of the repairable connecting piece 30, and correspondingly screwing the second screw cap 72 to realize the installation of the repairable connecting piece and the common round steel pipe section.
Further, during field construction, only step 5 is needed, and steps 1-4 are finished in a factory; namely, when the device is processed in a factory, the hollow ball, the short cantilever round steel pipe section and the repairable connecting piece can be welded and assembled, and only the common round steel pipe section and the repairable connecting piece need to be connected through bolts on site, so that high-altitude construction operation is simplified, and construction efficiency is improved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A novel large-span repairable fabricated node, comprising: the hollow ball is connected with a plurality of round steel tube connecting components arranged on the hollow ball;
the round steel pipe connecting assembly comprises a repairable connecting piece, a short cantilever round steel pipe section and a common round steel pipe section, and the yield strength of the repairable connecting piece is lowest; the one end of short cantilever round steel pipe section is installed first round steel plate is installed to the clean shot on, the other end, but the one end of repairable connecting piece through first bolt crowd with first round steel plate links to each other, the other end passes through second bolt crowd with install the second round steel plate of ordinary round steel pipe section one end links to each other.
2. The novel large-span repairable assembly node as claimed in claim 1, wherein one end of the short cantilever round steel pipe section is welded and fixed with the hollow ball, and the other end is welded and fixed with the first round steel plate; and the second round steel plate is fixedly welded with the common round steel pipe section.
3. The novel large-span repairable fabricated node of claim 1 or 2, wherein the repairable connecting piece comprises a cross steel plate, a third round steel plate and a fourth round steel plate;
the third round steel plate and the fourth round steel plate are respectively welded at two ends of the cross-shaped steel plate, and the yield strength of the cross-shaped steel plate is smaller than that of the short cantilever round steel pipe section, the common round steel pipe section, the first round steel plate, the second round steel plate, the third round steel plate and the fourth round steel plate;
a plurality of groups of corresponding bolt holes are formed in the third round steel plate and the first round steel plate, and the first round steel plate and the third round steel plate are connected through the first bolt group;
and a plurality of groups of corresponding bolt holes are formed in the fourth round steel plate and the second round steel plate, and the second round steel plate and the fourth round steel plate are connected through the second bolt group.
4. The novel large-span repairable fabricated node of claim 3, wherein the first bolts of the first bolt cluster pass through the first round steel plate to a third round steel plate, and the first nuts of the first bolt cluster are screwed and fixed on the third round steel plate; the first screw is fixedly welded on the first round steel plate or directly penetrates through bolt holes of the first round steel plate and a third round steel plate;
a second screw of the second bolt group penetrates from the second round steel plate to a fourth round steel plate, and a second nut of the second bolt group is screwed and fixed on the fourth round steel plate; and the second screw rod is welded and fixed on the second round steel plate.
5. The novel large-span repairable fabricated node of claim 3, wherein the cross steel plate, the first round steel plate, the second round steel plate, the third round steel plate and the fourth round steel plate are uniform in thickness.
6. A method for assembling a novel large-span repairable fabricated node according to any one of claims 3-5, comprising:
welding and fixing a first round steel plate at one end of the short cantilever round steel pipe section;
the third round steel plate and the fourth round steel plate are welded and fixed at two ends of the cross-shaped steel plate to form a repairable connecting piece;
the first round steel plate and the third round steel plate are connected through the first bolt group, so that the repairable connecting piece and the short cantilever round steel pipe section are installed; the other end of the short cantilever round steel pipe section is welded and fixed on the hollow ball;
welding a second screw rod of the second bolt group on a second round steel plate, and then welding and fixing the second round steel plate at one end of the common round steel pipe section;
and a common round steel pipe section is arranged at the other end of the repairable connecting piece, and the second screw cap is screwed up correspondingly, so that the installation of the repairable connecting piece and the common round steel pipe section is realized.
7. The method of assembling of claim 6, wherein the nodes are adapted for use in a large span single layer spherical reticulated shell, and the number of circular steel tube connecting assemblies is determined by the number of rods connected by the nodes in the reticulated shell.
8. The method of assembly of claim 6, wherein the installation of the repairable connector with the plain round steel pipe section is accomplished by merely tightening the second nut during field construction; the rest procedures are finished in the factory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191381.8A CN112323976A (en) | 2020-10-30 | 2020-10-30 | Novel large-span repairable assembly type node and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191381.8A CN112323976A (en) | 2020-10-30 | 2020-10-30 | Novel large-span repairable assembly type node and assembly method |
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| Publication Number | Publication Date |
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| CN112323976A true CN112323976A (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011191381.8A Pending CN112323976A (en) | 2020-10-30 | 2020-10-30 | Novel large-span repairable assembly type node and assembly method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914460A (en) * | 2021-09-28 | 2022-01-11 | 山东经典建筑研究院有限公司 | Large-span repairable assembly type node and assembly method |
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| CN201614666U (en) * | 2010-03-09 | 2010-10-27 | 浙江东南网架股份有限公司 | Three-way stressed bolt ball joint |
| CN203640059U (en) * | 2013-10-30 | 2014-06-11 | 上海宝冶集团有限公司 | High-strength bolted connection node of steel structure multi-rod piece |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113914460A (en) * | 2021-09-28 | 2022-01-11 | 山东经典建筑研究院有限公司 | Large-span repairable assembly type node and assembly method |
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Application publication date: 20210205 |
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