CN203178087U - Vertical loading universal equipment for test on top surface structure of space-filling model based on stiffness of tension spring - Google Patents
Vertical loading universal equipment for test on top surface structure of space-filling model based on stiffness of tension spring Download PDFInfo
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- CN203178087U CN203178087U CN 201320117647 CN201320117647U CN203178087U CN 203178087 U CN203178087 U CN 203178087U CN 201320117647 CN201320117647 CN 201320117647 CN 201320117647 U CN201320117647 U CN 201320117647U CN 203178087 U CN203178087 U CN 203178087U
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- 238000011068 loading method Methods 0.000 title claims abstract description 57
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Abstract
本实用新型涉及一种基于拉力弹簧刚度的空间结构模型试验顶面结构竖向加载通用装置，由荷载分配部分和加载部分组成，所述荷载分配部分由钢丝绳、钢丝绳拉紧器、受拉弹簧、弹簧拉锁连接件和荷载分配盘组成，其中：对应于空间结构模型上的每个加载节点，下方都通过弹簧拉锁连接件连接钢丝绳的一端，钢丝绳另一端通过钢丝绳拉紧器连接受拉弹簧，受拉弹簧另一端通过弹簧拉锁连接件连接于荷载分配盘上，所述加载部分连接荷载分配盘。可以将非常大的总荷载值较精确的按照目标比例分配给数量非常多的模型节点。荷载施加设备可采用手拉葫芦加载、重物堆载、液压千斤顶加载三种变化形式。
The utility model relates to a general device for vertically loading the top structure of a space structure model test based on tension spring stiffness, which is composed of a load distribution part and a loading part. The load distribution part is composed of a steel wire rope, a steel wire rope tensioner, a tension spring, It is composed of a spring zipper connector and a load distribution plate, in which: corresponding to each loading node on the space structure model, one end of the wire rope is connected with the spring zipper connector below, and the other end of the wire rope is connected with the tension spring through a wire rope tensioner. The other end of the tension spring is connected to the load distribution plate through a spring zipper connector, and the loading part is connected to the load distribution plate. A very large total load value can be distributed to a very large number of model nodes in a more accurate target ratio. The load application equipment can adopt three variations: hand chain hoist loading, heavy object stacking, and hydraulic jack loading.
Description
Technical field
The utility model relates to space structural model test in the Structural Engineering field, is specifically related to a kind of space-filling model test top surface structure based on tension spring rigidity and vertically loads fexible unit.
Background technology
At present, applying of space-filling model top surface structure vertical load has the multinode distribution beam to load and single node preloading/carry dual mode usually.All there is certain use limitation in dual mode: for multinode distribution beam loading method, one covering device only limits to load 4 nodes (2 grades of distribution beam) usually at most, has the problem of charger collaborative work when being applied to load the numerous test of number of nodes; The payload values that loads node simultaneously is very responsive to the variation that distributes the arm of force, so only be used for the situation that the joint load value comparatively approaches usually.Single node preloading/hanging method can be additional to the accurately loading of quality realization of weight on the node by adjustment, yet when payload values is very big (many model total load (TL) values are more than 100 tons), the mode of this dependence weight sole mass just is difficult to realize.
Summary of the invention
In order to overcome many deficiencies of existing load mode, finish the model test of complex space structure, the utility model purpose is to provide a kind of space-filling model test top surface structure based on tension spring rigidity vertically to load fexible unit.This device can solve have multinode, big load, the joint load value loading problem of the space-filling model of equal feature not, and have three kinds of versions such as using weight preloading, chain block, hydraulic jack, can take the circumstances into consideration to select according to the actual conditions of model, contain vertical all the loading demands that load of space-filling model basically.
The space-filling model test top surface structure based on tension spring rigidity that the utility model proposes vertically loads fexible unit, formed by load distribution portion and loading section, described load distribution portion is by wire rope 3, wire rope strainer 4, extension spring 5, spring zip web member 6 and load distribution plate 7 are formed, wherein: corresponding to each the loading node 2 on the space-filling model 1, the end that spring zip web member 6 connects wire rope 3 is all passed through in the below, wire rope 3 other ends connect extension spring 5 by wire rope strainer 4, extension spring 5 other ends are connected on the load distribution plate 7 by spring zip web member 6, and described loading section connects load distribution plate 7.
In the utility model, when loading section adopts chain block 8, load distribution plate 7 belows arrange loading equipemtn chain block 8, load distribution plate 7 belows are fixed in by chain block web member 9 in the upper end of described chain block 8, the lower end of chain block 8 is connected the upper end of pulling force sensor 11 with high-strength bolt 13 by web member 10, the lower end of pulling force sensor 11 links to each other with web member 12 by high-strength bolt 13, and web member 12 is directly welded on the structural model basis 14.
In the utility model, when loading section adopted preloading weight 15, load distribution plate 7 tops arranged loading equipemtn preloading weight 15, and described preloading weight 15 homogeneous reactors are placed on the load distribution plate 7.
In the utility model, when loading section adopts hydraulic jack 17, the corner positions of load distribution plate 7 tops arranges loading equipemtn hydraulic jack 17, and described hydraulic jack 17 is that counter-force supports with lifting jack reaction frame 16, and lifting jack reaction frame 16 is directly welded on the structural model basis 14.
In the utility model, described load distribution plate 7 can adopt the load distribution beam according to the test actual conditions.
The technical scheme that its technical matters that solves the utility model adopts is: in the space-filling model, the load distribution plate (beam) that each load(ing) point is placed by spring zip and lower horizontal is connected, by the load application devices load distribution plate (beam) is descended, and then pulling spring zip is realized the loading to node.
Be linear or many broken lines shape when model loads the projection of node on surface level, can adopt multistage load distribution beam to distribute load; Otherwise, then use the load distribution plate of arbitrary plane shape.The use of load distribution plate has been cancelled loading the restriction of number of nodes and space distribution, and the monolithic distribution plate can be to dozens of node load application, and charger is had can be to the characteristic of " multinode " loading.
The downward vertical displacement of load distribution plate (beam) can be provided by modes such as weight preloading, chain block, hydraulic jack according to factors such as total load (TL) value size, loading spatial altitudes, when using chain block or hydraulic jack, the load that model is applied can reach tens of tons to hundreds of tons, " big load " requirement of implementation model.
According to Hooke's law
, be even decline state (not having whole rigid body inclination or local moderate finite deformation), i.e. spring zip elongation at load distribution plate (beam)
When identical, can be by adjusting the rigidity of spring zip
Make and produce the pulling force that varies in size in the zip
And then be passed to the loading node.At this moment, if the rigidity ratio between the different spring zips is set to destination node payload values ratio, just can realize the purpose of " joint load value difference ".The spring zip is made of node side web member, wire rope, wire rope strainer, tension spring and load distribution plate end connection.Mechanical analysis and experimental result show that the rigidity of spring zip depends on the rigidity of tension spring, thereby is controlled.
The beneficial effects of the utility model are very large total load (TL) value can be distributed to the very many model nodes of quantity according to target proportion more accurately.
Description of drawings
Fig. 1 is general illustration of the present utility model.
Fig. 2 schematic diagram of the present utility model.
Fig. 3 uses chain block to load synoptic diagram.
Fig. 4 uses the preloading weight to load synoptic diagram.
Fig. 5 uses hydraulic jack to load synoptic diagram.
Number in the figure: 1 is space-filling model, and 2 for loading node, and 3 is wire rope, 4 is the wire rope strainer, and 5 is extension spring, and 6 is spring zip web member, 7 is load distribution plate (beam), and 8 is chain block, and 9 is the chain block web member, 10 is sensor and chain block web member, and 11 is pulling force sensor, and 12 is sensor and model basis web member, 13 is high-strength bolt, and 14 is the structural model basis, and 15 are the preloading weight, 16 is the lifting jack reaction frame, and 17 is hydraulic jack.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, the load distribution portion of this device is made up of wire rope 3, wire rope strainer 4, extension spring 5, spring zip web member 6 and load distribution plate 7, what Fig. 1 showed is the loading original state of load distribution portion of the present utility model, each of corresponding space-filling model 1 loads node 2, the below is hung steel cable 3, a wire rope strainer 4 and an extension spring 5 in order successively, and the below of the top of wire rope 3 and extension spring 5 is connected with load distribution plate (beam) 7 with loading node 2 by a spring zip web member 6 respectively." the spring zip " be made up of wire rope 3, wire rope strainer 4 and extension spring 5 is vertical state, and load distribution plate (beam) is hung in the below of space-filling model 1 by many spring zips.Principle of work of the present utility model is seen Fig. 2 in the loading procedure, namely makes in the vertical process that descends of load distribution plate (beam) by external force, can produce tensile elongation to the spring zip
According to Hooke's law
, be even decline state (not having whole rigid body inclination or local moderate finite deformation), all spring zip elongations at load distribution plate (beam)
When identical, the rigidity of spring zip and the pulling force in it are proportional.The spring zip mainly form (Fig. 6) by three parts, i.e. wire rope 3, wire rope strainer 4 and extension spring 5, the three is series relationship.Therefore the global stiffness of spring zip is
Show according to experimental result, in matching used (even with the wire rope 3 with same bearer ability, wire rope strainer 4 and extension spring 5) spring fastener device,
Much smaller than
With
, so the rigidity of spring zip is mainly determined by controllable stiffness and the less extension spring rigidity of dispersion degree.
The loading section of this device, the mode of using external force that load distribution plate (beam) 7 is descended has three kinds, uses chain block to load (Fig. 3), uses the preloading weight to load (Fig. 4) and uses hydraulic jack to load (Fig. 5).
As shown in Figure 3, when using chain block to load, a plurality of chain blocks 8 are set between load distribution plate (beam) 7 and structural model basis 14.The below of load distribution plate 7 is fixed in by chain block web member 9 in the upper end of each chain block 8, connects and be connected on the model basis 14 behind the pulling force sensor 11 in the lower end.Being connected by a sensor and chain block web member 10 and a high-strength bolt 13 of chain block 8 and pulling force sensor 11 finished, and being connected by a high-strength bolt 13 and sensor and model basis web member 12 of pulling force sensor 11 and model basis finished.The screw thread of high-strength bolt 13 directly screws in the inside of pulling force sensor 11, and sensor and model basis web member 12 are directly welded on the structural model basis 14.During loading, pulling chain block 8 shortens the slide fastener between chain block 8 and the loading distribution plate (beam) 7, makes to load distribution plate (beam) decline, and then by the load distribution portion of this device the loading node 2 of space-filling model 1 is realized loading.Use pulling force sensor 11 can monitor the load numerical value that chain block 8 provides.Use chain block to load and be applicable to the model test that adopts less reduced scale, this moment, moulded dimension and load were all bigger.Bigger moulded dimension makes the model below have enough height that chain block is installed, and the parallel connection of a plurality of chain blocks can provide extremely up to a hundred tons load of tens of tons.
As shown in Figure 4, when using the preloading weight to load, preloading weight 15 directly evenly is stacked on the load distribution plate (beam) 7.During loading, by the gravity of preloading weight 15 load distribution plate (beam) 7 is descended, and then by the load distribution portion of this device the loading node 2 of space-filling model 1 is realized loading.Use the preloading weight to load and be applicable to all model tests of the less big reduced scale of employing of moulded dimension and load.
As shown in Figure 5, when using hydraulic jack to load, the corner positions of load distribution plate (beam) 7 tops arranges hydraulic jack 17, hydraulic jack 17 is that counter-force supports loading distribution plate (beam) 7 load applications with lifting jack reaction frame 16, and lifting jack reaction frame 16 is directly welded on the structural model basis 14.During loading, the load that applies by hydraulic jack 17 descends load distribution plate (beam) 7, and then by the load distribution portion of this device the loading node 2 of space-filling model 1 is realized loading.Hydraulic jack loads and more is applicable to the test of using loading beam to carry out the load distribution, and this moment, hydraulic jack placed the loading beam two ends, can apply tens of tons to up to a hundred tons load.
Need will accurately consider the position or pile the centroid position of heavy thing of making a concerted effort of chain block pulling force, Hydraulic Jack during design, with its roughly the same position of making a concerted effort to place with the spring zip, assurance load distribution plate (beam) is even decline.
Claims (5)
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320117647 CN203178087U (en) | 2013-03-15 | 2013-03-15 | Vertical loading universal equipment for test on top surface structure of space-filling model based on stiffness of tension spring |
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| CN 201320117647 CN203178087U (en) | 2013-03-15 | 2013-03-15 | Vertical loading universal equipment for test on top surface structure of space-filling model based on stiffness of tension spring |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155131A (en) * | 2014-07-31 | 2014-11-19 | 河海大学 | Cable simulation device and cable simulation method in ship mooring physical model test |
| CN106501083A (en) * | 2016-12-12 | 2017-03-15 | 兰州理工大学 | Large scale structure multiple spot ground anchor type drag-line charger and test method |
| CN111157205A (en) * | 2020-01-20 | 2020-05-15 | 中国电力工程顾问集团西北电力设计院有限公司 | A decoupling device with protection system and its test method |
| CN111811942A (en) * | 2020-08-07 | 2020-10-23 | 中国建筑第八工程局有限公司 | Static load test equipment and method for electromechanical system support |
| CN115901138A (en) * | 2022-12-03 | 2023-04-04 | 苏州科技大学 | Common loading simulation method and device for uniformly distributed load and concentrated load of simply supported beam |
-
2013
- 2013-03-15 CN CN 201320117647 patent/CN203178087U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155131A (en) * | 2014-07-31 | 2014-11-19 | 河海大学 | Cable simulation device and cable simulation method in ship mooring physical model test |
| CN104155131B (en) * | 2014-07-31 | 2016-08-17 | 河海大学 | Hawser analog and method thereof in a kind of ship mooring physical experiments |
| CN106501083A (en) * | 2016-12-12 | 2017-03-15 | 兰州理工大学 | Large scale structure multiple spot ground anchor type drag-line charger and test method |
| CN111157205A (en) * | 2020-01-20 | 2020-05-15 | 中国电力工程顾问集团西北电力设计院有限公司 | A decoupling device with protection system and its test method |
| CN111811942A (en) * | 2020-08-07 | 2020-10-23 | 中国建筑第八工程局有限公司 | Static load test equipment and method for electromechanical system support |
| CN115901138A (en) * | 2022-12-03 | 2023-04-04 | 苏州科技大学 | Common loading simulation method and device for uniformly distributed load and concentrated load of simply supported beam |
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Granted publication date: 20130904 Termination date: 20160315 |
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