CN103558081A - Centralized load application device for stability test on steel beam - Google Patents
Centralized load application device for stability test on steel beam Download PDFInfo
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- CN103558081A CN103558081A CN201310560938.4A CN201310560938A CN103558081A CN 103558081 A CN103558081 A CN 103558081A CN 201310560938 A CN201310560938 A CN 201310560938A CN 103558081 A CN103558081 A CN 103558081A
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- load application
- load
- ring
- stability test
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Abstract
The invention discloses a centralized load application device for a stability test on a steel beam. The device comprises a load application ring, a load application box and a load application plate, and is characterized in that a holed joint plate at the lower end of the load application ring is connected with the load application box through a steel strand, wherein the load application ring consists of two joint plates, the holed joint plate, two tapered screw fixing joint plates and four slanting poles, which are connected to from a rhombic ring. The device has the beneficial effects that the condition that the load application device leaves from an application point and cannot provide directional force in case of flexural-torsional buckling can be prevented, and the action area of a load can be maximally reduced to be approximately in an ideal state of centralized load application; the device is convenient to manufacture, reusable and easy to operate.
Description
Technical field
the present invention relates to steel construction technical field, particularly a kind of girder steel stability test load applies and puts.
Background technology
steel construction is compared with xoncrete structure, and steel have the special advantages such as intensity is high, good toughness.Under same bearer power condition, steel sectional dimension of members is little more a lot of than concrete component, so its stable problem is just comparatively outstanding.As main bearing member in steel construction---the stable problem of girder steel is the emphasis that researchist and designer pay close attention to.On beam, having Concentrated load is situation common in member actual loading, so need to study the stability of girder steel under Concentrated load.
at present, less about the stable test of girder steel both at home and abroad, main cause is because charger is when girder steel has side direction bending distortion, is difficult to guarantee that loading Position and load direction are constant.And because the skew of charger may hinder the buckling deformation of beam, cause the test figure measured inaccurate.At present in existing minority stability test, conventional lifting jack applies load, but lifting jack loads and exists two kinds of significant shortcomings: when 1. traditional lifting jack applies load, during girder steel generation bending unstability, because load(ing) point can be displaced sideways and reverse, so lifting jack will depart from test specimen surface, cause continuing again loading, test also will stop.When 2. lifting jack applies load, an application point face normally, can not realize Concentrated load in the virtual condition of a bit, causes test findings and actual forced status not to be inconsistent.In addition,, for the less beam in cross section, the excessive active area of lifting jack seems extremely improper.
Summary of the invention
the object of this invention is to provide a kind of cannot continuation while overcoming beam generation bending unstability loads, and excessive cannot the realization of power active area a little applies load, can in girder steel stability test process, apply desirable load, and guarantee to continue to apply when girder steel unstability to protect to power, and the thick-and-thin girder steel stability test of loading Position load bringing device.
the present invention realizes like this, it comprises loaded ring, loads case and load plate, the gusset plate with holes that it is characterized in that loaded ring lower end is connected with loading case by steel strand wires, and loaded ring connects into rhombus ring by two gusset plates, a gusset plate with holes, two fixed cone nail gusset plates and four braces.
beneficial effect of the present invention is: 1. can guarantee that, when torsional occurs, charger does not leave application point, to provide the guarantor of test needs to power; 2. can reduce to greatest extent load action area, realize the perfect condition that load only puts on a bit; 3. easy to make, can reuse, and simple to operate.
Accompanying drawing explanation
below in conjunction with accompanying drawing, the present invention will be further described;
fig. 1 is the structural representation of girder steel stability test load bringing device,
fig. 2 is loaded ring schematic diagram,
fig. 3 is cone nail schematic diagram.
Embodiment
as shown in Fig. 1-3, this girder steel stability test load bringing device comprises loading bores nail 1, brace 2, gusset plate with holes 3, loading case 4, steel strand wires 5, load plate 6, fixed cone nail gusset plate 7, gusset plate 8 and loaded ring 9, the lower end of loaded ring 9 is connected with loading case 4 by steel strand wires 5, loaded ring 9 connects into rhombus ring by two gusset plates 8, one gusset plate with holes 3, two fixed cone nail gusset plates 7 and four braces 2, loading cone nail 1 use bolt is connected on fixed cone nail gusset plate 7, bolt replacing cone easy to connect nail, need not need to tackle; Steel strand wires 5 are through in the hole of gusset plate 3 with holes, connect and load case 4, make to load case and hang under loaded ring, add balancing weight therein and sand carrys out control load, load plate 6, be positioned over test specimen top flange, and by load plate 6 central aperture ideal load points, load plate 6 use fixtures are fixed, and loaded ring 9 is inserted in to test specimen, load cone nail 1 and aim at hole in load plate 6, can load.
Claims (2)
1. a girder steel stability test load bringing device, it comprises loaded ring, loads case and load plate, it is characterized in that the gusset plate with holes of loaded ring lower end is connected with loading case by steel strand wires.
2. Ju girder steel stability test claimed in claim 1 load bringing device, is characterized in that loaded ring connects into rhombus ring by two gusset plates, a gusset plate with holes, two fixed cone nail gusset plates and four braces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310560938.4A CN103558081A (en) | 2013-11-13 | 2013-11-13 | Centralized load application device for stability test on steel beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310560938.4A CN103558081A (en) | 2013-11-13 | 2013-11-13 | Centralized load application device for stability test on steel beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103558081A true CN103558081A (en) | 2014-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310560938.4A Pending CN103558081A (en) | 2013-11-13 | 2013-11-13 | Centralized load application device for stability test on steel beam |
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| CN (1) | CN103558081A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989987A (en) * | 2017-03-30 | 2017-07-28 | 西京学院 | A kind of multi-functional loaded ring experimental rig |
| CN108007790A (en) * | 2018-01-05 | 2018-05-08 | 沈阳建筑大学 | A kind of assembled girder steel monolithic stability experiment load loading device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203534900U (en) * | 2013-11-13 | 2014-04-09 | 沈阳建筑大学 | Concentrated load application device used during steel beam stability test |
-
2013
- 2013-11-13 CN CN201310560938.4A patent/CN103558081A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203534900U (en) * | 2013-11-13 | 2014-04-09 | 沈阳建筑大学 | Concentrated load application device used during steel beam stability test |
Non-Patent Citations (1)
| Title |
|---|
| 张壮南: "单轴对称工字形单悬伸梁和双跨连续梁整体稳定性能研究", 《中国博士学位论文全文数据库 工程科技II辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989987A (en) * | 2017-03-30 | 2017-07-28 | 西京学院 | A kind of multi-functional loaded ring experimental rig |
| CN108007790A (en) * | 2018-01-05 | 2018-05-08 | 沈阳建筑大学 | A kind of assembled girder steel monolithic stability experiment load loading device and method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140205 |