CN111424989A - Tension construction method and construction tool for steel pull rod of net rack - Google Patents
Tension construction method and construction tool for steel pull rod of net rack Download PDFInfo
- Publication number
- CN111424989A CN111424989A CN202010180474.4A CN202010180474A CN111424989A CN 111424989 A CN111424989 A CN 111424989A CN 202010180474 A CN202010180474 A CN 202010180474A CN 111424989 A CN111424989 A CN 111424989A
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- tensioning
- net rack
- pull rod
- steel pull
- steel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/121—Construction of stressing jacks
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
- E04B2001/1996—Tensile-integrity structures, i.e. structures comprising compression struts connected through flexible tension members, e.g. cables
Abstract
The invention discloses a net rack steel pull rod tensioning construction method and a construction tool, wherein the net rack steel pull rod tensioning construction method comprises the steps of arranging a tensioning tool on a net rack node, and installing tensioning equipment on the tensioning tool; connecting two ends of the steel pull rod group to the net rack nodes respectively; tensioning by using tensioning equipment until a preset tensioning force is reached; removing the tensioning equipment; the net rack steel pull rod tensioning construction tool comprises a connecting body for installing tensioning equipment. When the tensioning equipment in the embodiment of the invention is used for tensioning the net rack, the steel pull rod group is also subjected to the tensile force applied to the net rack by the tensioning equipment and generates deformation, the tensile force of the tensioning equipment is gradually transferred to the steel pull rod group, after the net rack is tensioned and the tensioning equipment is unloaded, the degree of stress change in the steel pull rod group after the tensioning equipment is unloaded is reduced, and the tensioning equipment on the net rack node can be applied to other construction processes after the tensioning equipment is unloaded, so that the universality and the practicability are good.
Description
Technical Field
The invention relates to a net rack construction method, in particular to a net rack steel pull rod tensioning construction method and a construction tool.
Background
With the development of space structures in the world, the space truss structure is gradually applied to buildings needing large span and large space due to efficient stress performance and novel and attractive appearance, and the space truss structure needs to be assembled and prestressed and tensioned in the construction process so as to form a space structure with a stable structure. Before the net rack is tensioned through the steel pull rod, a special tool design needs to be carried out on tensioning, the tool is a disposable tool and cannot be used in other tensioning construction projects, the tool is directly installed on a rod body of the steel pull rod, the rod body of the steel pull rod is not stressed and deformed in the tensioning process, after the tensioning tool is unloaded, stress in the rod body of the steel pull rod is redistributed, and the tensioning force and the deformation of the steel pull rod are difficult to measure.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a tension construction method and a construction tool for a steel pull rod of a net rack, which can improve the tension universality of the steel pull rod and reduce the deformation degree of the steel pull rod after unloading.
In a first aspect, an embodiment of the present invention provides a method for tensioning a steel tie rod of a grid structure, including:
arranging a tensioning tool on the net rack node, and installing a tensioning device on the tensioning tool;
arranging a steel pull rod set, and respectively connecting two ends of the steel pull rod set to the net rack nodes;
tensioning by using tensioning equipment until a preset tensioning force is reached;
and (5) removing the tensioning equipment.
The tension construction method of the steel pull rod of the net rack in the embodiment of the invention at least has the following beneficial effects:
when the tensioning equipment in the embodiment of the invention is used for tensioning the net rack, the steel pull rod group is also subjected to the tensile force applied to the net rack by the tensioning equipment and generates deformation, so that the tensile force of the tensioning equipment is gradually transferred to the steel pull rod group in the tensioning process, after the net rack is tensioned and the tensioning equipment is unloaded, the tensile force applied by the tensioning equipment is completely transferred into the steel pull rod group, the tensile stress applied to the steel pull rod group in the tensioning process is uniform, the degree of stress change in the steel pull rod group after the tensioning equipment is unloaded is reduced, and the tensioning equipment on the net rack node can be applied to other construction processes after the tensioning equipment is unloaded, so that the universality and the practicability are good.
According to the tensioning construction method of the steel pull rod of the net rack, a graded tensioning method is adopted in the tensioning process, and the follow-up condition of the steel pull rod set is checked step by step.
According to another embodiment of the invention, in the tension construction method of the steel tie rod of the net rack, the tension tool is installed on the lower chord node ball of the net rack.
According to another embodiment of the invention, in the tensioning process, the tensioning equipment is pulled to the net rack nodes, and the rod bodies of the steel pull rod sets are rotated at the same time.
According to another embodiment of the invention, the tension process of the tension construction method of the net rack steel pull rod further comprises the following steps:
lifting the net rack to a preset height, tensioning part of the steel pull rod set, and repeating the steps until the net rack is lifted in place;
closing the net rack;
and retesting and supplementing tensioning the steel pull rod group.
According to another embodiment of the invention, each group of the steel pull rod groups comprises a first steel pull rod part and a second steel pull rod part which are symmetrically distributed, and the first steel pull rod part and the second steel pull rod part are connected through a cable clamp.
According to the tensioning construction method of the net rack steel pull rod in other embodiments of the invention, the tensioning tool and the tensioning equipment are calibrated before the tensioning process.
In a second aspect, an embodiment of the invention provides a tool for tensioning construction of a steel tie of a net rack, which is used for implementing the method for tensioning construction of the steel tie of the net rack.
The tension construction tool for the steel pull rod of the net rack provided by the embodiment of the invention at least has the following beneficial effects:
the tensioning tool is arranged to provide an installation position for the tensioning equipment, so that the tensioning equipment is connected with the net rack node, the steel pull rod bears the tensioning force and deforms in the process of applying the tensioning force to the net rack node by the tensioning equipment, the rod body of the steel pull rod is uniformly stressed and deformed, the deformation degree of the steel pull rod is small after the tensioning equipment is unloaded, the measurement is convenient, multiple tensioning operations are not needed, and the construction time is saved; the tensioning tool can be applied to other construction steps of the net rack, and is good in universality.
According to the tension construction tool for the steel pull rod of the net rack in other embodiments of the invention, not less than two connecting bodies are arranged on the nodes of the net rack.
According to other embodiments of the invention, the connecting body is arched or frame-shaped.
According to the tension construction tool for the steel pull rod of the net rack in other embodiments of the invention, the connecting plate for installing the steel pull rod is fixedly arranged on the net rack node.
According to another embodiment of the invention, the connecting body comprises a mounting plate, a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are respectively arranged on two sides of the mounting plate, and two sides of the first connecting body and two sides of the second connecting body are respectively connected with the mesh frame node and the mounting plate.
Drawings
FIG. 1 is a schematic diagram of a tension construction process of a steel pull rod of a net rack;
FIG. 2 is a schematic view of FIG. 1 in another orientation;
FIG. 3 is a schematic structural view of one embodiment of a connector body;
fig. 4 is a schematic structural view of another embodiment of the connecting body.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
In the description of the embodiments of the present invention, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, if a feature is referred to as being "disposed", "fixed", "connected", or "mounted" to another feature, it may be directly disposed, fixed, or connected to the other feature or may be indirectly disposed, fixed, connected, or mounted to the other feature. In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
Fig. 1 and 2 show two schematic diagrams of a tension construction process of a net rack steel pull rod, and referring to fig. 1 and 2, the tension construction process of the net rack steel pull rod comprises the following steps:
arranging a tensioning tool on the net rack node, and installing a tensioning device on the tensioning tool;
arranging a steel pull rod set, and respectively connecting two ends of the steel pull rod set to the net rack nodes;
tensioning until reaching the required tensioning force;
and (5) removing the tensioning equipment.
The tensioning equipment can tension the net rack by applying a tensioning force to the net rack nodes, the net rack nodes are provided with tensioning tools for installing the tensioning equipment, the steel pull rod group is also connected between the two net rack nodes, therefore, when the tensioning equipment is used for tensioning the net rack, the steel pull rod group is also subjected to the tensile force applied to the net rack by the tensioning equipment and generates deformation, so that the tensile force of the tensioning equipment is gradually transferred to the steel pull rod group in the tensioning process, after the net frame is tensioned and the tensioning equipment is unloaded, the tensioning force applied by the tensioning equipment is completely transferred into the steel pull rod group, the tensioning stress on the steel pull rod group is uniform in the tensioning process, the degree of stress change in the steel pull rod group after the tensioning equipment is unloaded is reduced, and the tensioning tool on the net rack node can be applied to other construction processes after the tensioning equipment is unloaded, and the universality and the practicability are good.
It should be noted that the tensioning tool in this embodiment may be directly welded to the lower chord node ball of the grid frame, so that on the premise of ensuring the quality of the weld joint, the loosening of the tensioning device in the tensioning process of the steel tie rod set is reduced, and the safety of the construction is improved.
In addition, each steel pull rod group comprises a first steel pull rod part and a second steel pull rod part which are symmetrically distributed, and the first steel pull rod part and the second steel pull rod part respectively comprise two steel pull rods which are connected in parallel, so that the first steel pull rod part and the second steel pull rod part form a parallel double-pull-rod structure, namely each steel pull rod group comprises four steel pull rods, and the four steel pull rods are parallel two by two. The first steel pull rod part and the second steel pull rod part in each steel pull rod group are connected through a cable clamp, the other ends of the first steel pull rod part and the second steel pull rod part are connected with a lower chord node ball of the net rack, and connecting plates for connecting the steel pull rods are arranged on the lower chord node ball of the net rack and the cable clamp; in addition, in order to ensure the stability of the tensioning process, two steel pull rod sets which are distributed in parallel are arranged on two sides of the net rack lower chord node ball, so that the stress uniformity of the net rack lower chord node ball in the tensioning process is ensured.
The tensioning equipment can adopt a tool screw and a hydraulic jack, two ends of the tool screw are respectively connected with the jack and the tensioning tool, the tool is made to change the length of the tool screw through the jack, and then the steel pull rod is tensioned.
The steel pull rod group can be tensioned by adopting a pre-tensioning method, and the specific tensioning process is as follows:
firstly, welding tensioning tools on the ball nodes at the two ends of the net rack, and fixing the steel pull rod groups on the ball nodes at the two ends of the net rack. And then assembling tensioning equipment to enable two ends of the tool screw to be respectively connected with the tensioning tool and the hydraulic jack. The tensioning equipment directly oppositely pulls the net rack lower chord ball joint, and rotates the rod body of the steel pull rod during tensioning until reaching the preset tensioning force. And unloading the tensioning equipment, returning oil to the jack, and transferring the tension force of the tool screw to the steel pull rod to finish the unloading of the tensioning equipment. By the tensioning method, the rod body of the steel pull rod is stressed uniformly, multiple times of tensioning is not needed, the steel pull rod is not easy to deform after being unloaded, the measurement is convenient, and the construction working hours are saved.
The stretching process adopts a graded stretching mode, for example, according to the difference of stretching force, the stretching is carried out step by step according to the mode of 0-10-20- … … -100% or 0-25-50- … … 100%, so that the condition that the deformation amplitude of the steel pull rod and the net rack is large and the stress is concentrated or the stress is uneven in the stretching process is avoided; after each stage of tensioning is finished, checking the tightening follow-up condition of the steel pull rod in the steel pull rod group to ensure that the tensioning force of the tensioning equipment is transferred to the steel pull rod; in addition, in the tensioning process, force is applied to the four tension rods simultaneously, and the four tension rods are tightened simultaneously, so that the deformation and stress of the steel tension rod set are kept uniform.
In addition, the tensioning process of the steel pull rod can be crossed with the lifting and assembling of the net rack, so that the tensioning process further comprises the following steps: lifting the net rack to a preset height, tensioning part of the steel pull rod set, and repeating the steps until the net rack is lifted in place; closing the net rack; and retesting and supplementing tensioning the steel pull rod.
Specifically, the steel pull rod group can be assembled together with other members, then the steel structure is lifted, after the steel structure is lifted to a preset height, part of the net rack can be tensioned, and the process can be repeated for many times according to the specific construction environment of the steel structure until the net rack is lifted in place; then the net rack is folded; after the main structure construction is completed, retesting and supplementary tensioning are carried out on the steel pull rod group so as to ensure the stability of the integral structure of the net rack.
In addition, before the tensioning construction, the tensioning process can be simulated according to the grid structure and the tensioning environment, the mechanical analysis of the whole construction process is carried out, the possible conditions in the tensioning process are obtained in advance and are responded in time, the purpose of pre-controlling on-line is achieved, the stress and deformation of the steel pull rod in the tensioning process can be detected according to the mechanical analysis data, the internal force and deformation of the steel pull rod structure are controlled, the tension force of a tensioning point is mainly controlled, and the accurate control and adjustment of the tensioning process of the steel pull rod are realized by adopting a double-control principle.
In order to ensure the accuracy of the tensile force and deformation of a steel pull rod in the tensioning process, preparation work needs to be carried out on a tensioning tool, a net rack node and tensioning equipment before the tensioning operation is implemented, and the preparation work comprises the following steps:
the steel pull rod and the tensioning equipment need to be calibrated before being installed, a jack and an oil meter need to be matched for periodic calibration, and the time interval of single calibration is not longer than 6 months; according to the calibration record and the construction tension force, the corresponding oil pressure gauge value is obtained through calculation, and the tension force can be accurately controlled according to the reading of the oil pressure gauge on the tension construction site.
Before the steel pull rod is installed, a proper amount of lubricant such as grease and the like needs to be coated on an adjusting sleeve of the steel pull rod, so that the sleeve is conveniently screwed in the tensioning process, and smooth tensioning of the steel pull rod is guaranteed.
Before the steel pull rod and the tensioning equipment are installed, facilities such as an operation platform, a hanging basket and the like with good safety and reliability are erected, and manual operation is facilitated to implement tensioning.
Strictly controlling space coordinates of net rack nodes, particularly the net rack nodes connected with steel pull rods and tensioning equipment;
strictly controlling the installation process of the tensioning tool and the net rack node, adjusting the direction of an ear plate connected with the steel pull rod on the net rack node, and ensuring the matching relationship of the ear plate and the steel pull rod so as to avoid influencing the tensioning of the steel pull rod and the structural stress;
after the steel pull rods are connected with the net rack nodes, the steel pull rods are initially adjusted, so that subsequent tensioning is facilitated, and the tensioning process needs to be implemented after all the steel pull rods are installed and adjusted.
As can be seen from fig. 1, upper node balls are arranged above lower node balls of the net rack, adjacent upper node balls are connected through upper chord members, the upper node balls are connected with cable clamps and the upper node balls are connected with the lower node balls through web members, and after the steel pull rods are tensioned through matching of jacks and tool screws, the lower node balls are connected through the steel pull rods, the net rack is tensioned to a preset angle and shape, and the net rack forms a stable structure.
In addition, the tension construction method of the steel pull rod of the net rack can be used for the net rack structure with local string tensioning, and has a good application range, universality and universality.
The invention also provides a tool for tensioning construction of the net rack steel pull rod 300, wherein the tool for tensioning construction of the net rack steel pull rod 300 can be used for executing the method for tensioning construction of the net rack steel pull rod 300, and the tool for construction comprises a connecting body 100, wherein the connecting body 100 is fixed on a node of a net rack and is used for connecting a tensioning device 200.
By arranging the tensioning tool, an installation position is provided for the tensioning equipment 200, so that the tensioning equipment 200 is connected with the net rack node, the steel pull rod 300 bears the tensioning force and deforms along with the tensioning force in the process of applying the tensioning force to the net rack node by the tensioning equipment 200, the rod body of the steel pull rod 300 is uniformly stressed and deformed, and after the tensioning equipment 200 is unloaded, the deformation degree of the steel pull rod 300 is small, so that the measurement is convenient, multiple tensioning is not needed, and the construction working hours are saved; the tensioning tool can be applied to other construction steps of the net rack, and is good in universality.
The connecting body 100 can be stably installed on the node of the net rack by welding, so that the connecting body 100 can be installed on the lower chord node ball 400 of the net rack, the lower chord node ball 400 of the net rack is used as the tension stress position of the steel pull rod 300, the steel pull rod 300 tension tool is arranged on the lower chord node ball 400 of the net rack, and the prestress tension construction of the steel pull rod 300 is facilitated.
The net rack nodes are provided with connecting ear plates 310 used for connecting the steel pull rods 300, two groups of steel pull rods 300 are arranged between the adjacent net rack nodes, the two groups of steel pull rods 300 are connected through cable clamps 320 and are symmetrical relative to the cable clamps 320, the number of the steel pull rods 300 in each group can be set to be not less than two, and two parallel rods are formed to enhance the structural strength of the steel pull rods 300.
Can set up on the rack node and be no less than two connection body 100, provide a plurality of installation positions for tensioning equipment 200, make tensioning equipment 200 can follow different positions and carry out the stretch-draw to the rack node. Because the connecting body 100 is used for installing the tensioning equipment 200, the tensioning equipment 200 can adopt the jack 210 and the tool screws 220, the tool screws 220 are respectively installed on two sides of the jack 210, the other end of the tool screw 220 is connected with the net rack node, one side of each jack 210 is connected with one tool screw 220, the other side of each jack 210 is connected with two tool screws 220, and in order to match the installation of the tensioning equipment 200, in the embodiment, two tensioning tools and four tensioning tools are respectively installed on two opposite nodes of the net rack.
The connecting body 100 is provided with a mounting hole 110 for the tensioning device 200 to connect, and the tool screw 220 can be connected with the tensioning tool through the mounting hole 110. The connecting body 100 may be frame-shaped or arch-shaped, referring to fig. 3, the connecting body 100 is arch-shaped, one end surface of one side of the connecting body 100 is arc-shaped and is fixedly connected with the net rack node ball 400, and the mounting hole 110 on the connecting body 100 is used for the tensioning device 200 to connect. Referring to fig. 4, the connection body 100 is frame-shaped, the connection body 100 includes a first connection plate 120, a second connection plate 130 and a mounting plate 140 located between the first connection plate 120 and the second connection plate 130, one end of the first connection plate 120 and one end of the second connection plate 130 are connected to the mounting plate 140, the other end of the first connection plate 120 and the other end of the second connection plate 130 are connected to a node ball 400 of the rack, one ends of the first connection plate 120 and the second connection plate 130 close to the nodes of the rack are arc-shaped, and are conveniently welded to the node ball 400 of the rack, and the mounting holes 110 are disposed on the mounting plate 140, so that.
The material of stretch-draw frock, the size can set up according to specific stretch-draw environment, connecting body 100 in this embodiment adopts Q345B material, set up 2 stretch-draw frocks and 4 stretch-draw frocks on two relative node balls 400 of rack respectively, wherein mounting panel 140, first connecting plate 120, second connecting plate 130 among 2 stretch-draw frocks are thick 30mm, set up the round hole that the diameter is 40mm on the mounting panel 140, as mounting hole 110, wherein mounting panel 140, first connecting plate 120, second connecting plate 130 among 4 stretch-draw frocks are thick 20mm, set up the round hole that the diameter is 30mm on the mounting panel 140, as mounting hole 110.
The size of the tool screw 220 can also be selected according to the actual tension force and the tensioning tool, in this embodiment, the tool screw 220 is selected to be the tool screw 220 with the diameter of 32mm or 40mm, so as to cooperate with the jack 210 to tension the steel pull rod 300.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (12)
1. A tension construction method for a steel pull rod of a net rack is characterized by comprising the following steps:
arranging a tensioning tool on the net rack node, and installing a tensioning device on the tensioning tool;
arranging a steel pull rod set, and respectively connecting two ends of the steel pull rod set to the net rack nodes;
tensioning by using tensioning equipment until a preset tensioning force is reached;
and (5) removing the tensioning equipment.
2. A tensioning construction method for a steel pull rod of a net rack according to claim 1, characterized in that a step-by-step tensioning method is adopted in the tensioning process, and the follow-up condition of the steel pull rod group is checked step by step.
3. A tensioning construction method for a steel tie rod of a net rack according to claim 1, characterized in that the tensioning tool is installed on a node ball of a lower chord of the net rack.
4. A tensioning construction method for a steel pull rod of a net rack according to claim 1, characterized in that in the tensioning process, the tensioning equipment is pulled oppositely to the net rack node, and the rod body of the steel pull rod group is rotated at the same time.
5. A tensioning construction method of the net rack steel tie rod according to claim 1, wherein the tensioning process further comprises the following steps:
lifting the net rack to a preset height, tensioning part of the steel pull rod set, and repeating the steps until the net rack is lifted in place;
closing the net rack;
and retesting and supplementing tensioning the steel pull rod group.
6. A tensioning construction method for a steel tie of a net rack according to claim 1, wherein each steel tie group comprises a first steel tie rod part and a second steel tie rod part which are symmetrically distributed, and the first steel tie rod part and the second steel tie rod part are connected through a cable clamp.
7. A tensioning construction method of the net rack steel pull rod according to claim 1, characterized in that a tensioning tool and a tensioning device are calibrated before the tensioning process.
8. A tensioning construction tool for a steel pull rod of a net rack is characterized by comprising a connecting body fixedly connected to a joint of the net rack, wherein the connecting body is used for installing tensioning equipment.
9. A tension construction tool for a steel tie rod of a net rack according to claim 8, wherein not less than two connecting bodies are arranged on the nodes of the net rack.
10. A tension construction tool for a steel tie rod of a net rack according to claim 8, wherein the connecting body is arched or frame-shaped.
11. A tension construction tool for a steel tie rod of a net rack according to claim 8, wherein a connecting plate for mounting the steel tie rod is fixedly arranged on the net rack node.
12. The tension construction tool for the steel tie rod of the net rack according to claim 8, wherein the connecting body comprises a mounting plate, a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are respectively arranged on two sides of the mounting plate, and two sides of the first connecting body and two sides of the second connecting body are respectively connected with the nodes of the net rack and the mounting plate.
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| CN202010180474.4A CN111424989B (en) | 2020-03-13 | 2020-03-13 | Tension construction method and construction tool for steel pull rod of net rack |
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| CN202010180474.4A CN111424989B (en) | 2020-03-13 | 2020-03-13 | Tension construction method and construction tool for steel pull rod of net rack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235966A (en) * | 2021-05-14 | 2021-08-10 | 无锡周博建筑设计有限公司 | Net rack prestress reinforcing structure |
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| CN104453091A (en) * | 2014-10-22 | 2015-03-25 | 浙江精工钢结构集团有限公司 | Construction method of large-scale parallel flexible lower-cord combined trusses |
| CN105781126A (en) * | 2016-03-07 | 2016-07-20 | 浙江精工钢结构集团有限公司 | Construction method for passively building prestress on beam string structure |
| CN109235899A (en) * | 2018-09-30 | 2019-01-18 | 厦门立格钢构技术有限公司 | Rope branch dome method for applying prestressing force |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235966A (en) * | 2021-05-14 | 2021-08-10 | 无锡周博建筑设计有限公司 | Net rack prestress reinforcing structure |
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Effective date of registration: 20220919 Address after: Room 1908, Chengtou Xin Times Building, No. 2009, Pingshan Avenue, Liulian Community, Pingshan Street, Pingshan District, Shenzhen 518000 Patentee after: China Construction Steel Engineering Co.,Ltd. Address before: 3801, 38 / F, China Construction Science and engineering building, No. 3331, Weilan Coast Community Central Road, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: China Construction Engineering Group Co.,Ltd. |