CN104359764A - Secondary stress loading test device convenient for reinforcing structure under constant load and manufacturing method of secondary stress loading test device - Google Patents
Secondary stress loading test device convenient for reinforcing structure under constant load and manufacturing method of secondary stress loading test device Download PDFInfo
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- CN104359764A CN104359764A CN201410728543.5A CN201410728543A CN104359764A CN 104359764 A CN104359764 A CN 104359764A CN 201410728543 A CN201410728543 A CN 201410728543A CN 104359764 A CN104359764 A CN 104359764A
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Abstract
The invention relates to a secondary stress loading test device convenient for reinforcing a structure under a constant load. The secondary stress loading test device convenient for reinforcing the structure under the constant load comprises a base fixedly connected with a rigid ground, wherein heavy frames are arranged at the two sides of the base, a support is arranged at the lower part of each heavy frame, each support is fixedly connected with the rigid ground, each heavy frame is provided with a cross beam parallel to the rigid ground, a jack is hung upside down on each cross beam, each jack is vertical to the rigid ground and is provided with a force sensor, a test beam is arranged between each jack and the base, and each test beam is hinged with each jack and the base. The secondary stress loading test device convenient for reinforcing the structure under the constant load has the beneficial effects that an initial load can be applied to each test beam by virtue of a loading device, U-shaped increased cross section method reinforcing is carried out on a test piece under the condition that the initial load is kept constant, the working condition that the actual structure is reinforced under the initial stress can be fully simulated, the secondary stress loading test device convenient for reinforcing the structure under the constant load can be applied to a bending and shear reinforcing test of a reinforced concrete beam, the structure is simple and the cost is low.
Description
Technical field
The present invention relates to a kind of structure of being convenient to and hold secondary loading load testing machine carrying reinforcing and preparation method thereof.
Background technology
Traditional beam secondary loading load test adopts beam front to lay after-applied initial load mostly, and adopts the method to carry out often causing beam cross section under tension to reinforce difficulty when Enlargement of Section is reinforced, and builds, maintenance is difficult and load the problems such as difficulty under holding lotus.
Summary of the invention
Difficulty is reinforced in order to overcome beam cross section under tension when increasing section is reinforced, build under holding lotus, maintenance is difficult and load the problems such as difficulty, the present invention devises a kind of beam secondary loading load testing machine, this device belongs to flat test device, this device not only test specimen is easy for installation, and load application is accurate, loads satisfactory for result.
The scheme that technical solution problem of the present invention adopts is that a kind of structure of being convenient to holds the secondary loading load testing machine carrying and reinforce, comprise the pedestal be fixedly connected with rigid ground, described pedestal two side is provided with heavy frame, described heavy frame bottom is provided with bearing, described bearing is fixedly connected with rigid ground, described holding in stand is provided with the crossbeam parallel with rigid ground, on described crossbeam, reversal of the natural order of things has lifting jack, described lifting jack is perpendicular to rigid ground, described lifting jack is provided with force snesor, test beam is provided with between described lifting jack and pedestal, described test beam and lifting jack and pedestal hinged.
Further, the concrete connected mode between described bearing and rigid ground is, fixing rigid connecting fishplate bar with the corresponding bearing place of rigid ground, bearing is connected with rigid ground by foot bolt and screw rod.
Further, described crossbeam by bolt with hold stand and be connected.
Further, described lifting jack is mechanic jacks, and described lifting jack is connected with crossbeam by bolt.
Be convenient to structure and hold a method for making of carrying the secondary loading load testing machine reinforced, comprise the following steps:
(1) pedestal is set on rigid ground;
(2) make heavy frame by H profile steel, offer circular hole at its bottom support bracket place;
(3) by foot bolt and screw rod, heavy frame is firmly connected with rigid ground;
(4) make crossbeam by H profile steel, make it be connected with heavy frame by bolt;
(5) by bolt, lifting jack is connected with crossbeam.
Further, in step (4), described crossbeam is parallel with rigid ground.
Further, in step (5), described lifting jack is mechanic jacks.
Compared with prior art, the present invention has following beneficial effect: can apply initial load by charger to test beam, and under maintaining the constant condition of initial load, U-shaped Enlargement of Section reinforcing is carried out to test specimen, abundant simulation practical structures carries out the operating mode of reinforcing under initial stressed, being subject to curved and being cut reinforcement experiment of reinforced concrete beam can be used for, structure is simple, with low cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, patent of the present invention is further illustrated.
Fig. 1 is front elevation of the present invention;
Fig. 2 is side view of the present invention;
Fig. 3 is test parameters and Comparative result;
Fig. 4 is calculation diagram of the present invention;
Fig. 5 is internal force diagram of the present invention.
In figure:
1-pedestal; 2-heavy frame; 3-crossbeam; 4-lifting jack; 5-force snesor; 6-bearing; 7-foot bolt; 8-screw rod; 9-rigid ground; 10 test beams.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Fig. 1 ~ 5, a kind of structure of being convenient to holds the secondary loading load testing machine carrying and reinforce, comprise the pedestal 1 be fixedly connected with rigid ground 9, described pedestal 1 liang of side is provided with heavy frame 2, described heavy frame 2 bottom is provided with bearing 6, described bearing 6 is fixedly connected with rigid ground 9, described holding in stand 2 is provided with the crossbeam 3 parallel with rigid ground 9, on described crossbeam 3, reversal of the natural order of things has lifting jack 4, described lifting jack 4 is perpendicular to rigid ground 9, described lifting jack 4 is provided with force snesor 5, test beam 10 is provided with between described lifting jack 4 and pedestal 1, described test beam 10 and lifting jack 4 and pedestal 1 hinged.
In the present embodiment, the concrete connected mode between described bearing 6 and rigid ground 9 is, fixing rigid connecting fishplate bar with corresponding bearing 6 place of rigid ground 9, bearing 6 is connected with rigid ground 9 by foot bolt 7 and screw rod 8.
In the present embodiment, described crossbeam 3 by bolt with hold stand 2 and be connected.
In the present embodiment, described lifting jack 4 is mechanic jacks, and described very heavy 4 tops are connected with crossbeam 3 by bolt.
Be convenient to structure and hold a method for making of carrying the secondary loading load testing machine reinforced, comprise the following steps:
(1) pedestal 1 is set on rigid ground 9;
(2) make heavy frame 2 by H profile steel, offer circular hole at its bottom support bracket 6 place;
(3) by foot bolt 7 and screw rod 8, heavy frame 2 is firmly connected with rigid ground 9;
(4) make crossbeam 3 by H profile steel, make it be connected with heavy frame 2 by bolt;
(5) by bolt, lifting jack 4 is connected with crossbeam 3.
In the present embodiment, in step (4), described crossbeam 3 is parallel with rigid ground 9.
In the present embodiment, in step (5), described lifting jack 4 is mechanic jacks.
In order to the correctness of the principle of the invention is described, utilizes and invention has been 9 secondary loading reinforcement tests, shown in its data cases accompanying drawing 3, wherein l=3m, a=0.2m, in order to illustrate that test of the present invention adopts principle formula as follows:
Calculation diagram of the present invention and internal force diagram of the present invention are as shown in accompanying drawing 4,5, and in figure, A, B, C, D, E, F, G are the difference on test beam, and P is load, and g is reinforced beam line load, and l is length, and a is length.
From the error amount of accompanying drawing 3, all test specimens
and
all within 5%, indicate compared with this test unit oppositely applying starting force applies initial load with forward, its result has reliability.
Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; be understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. one kind be convenient to structure hold carry reinforce a secondary loading load testing machine, it is characterized in that: comprise the pedestal be fixedly connected with rigid ground, described pedestal two side is provided with heavy frame, described heavy frame bottom is provided with bearing, described bearing is fixedly connected with rigid ground, described holding in stand is provided with the crossbeam parallel with rigid ground, on described crossbeam, reversal of the natural order of things has lifting jack, described lifting jack is perpendicular to rigid ground, described lifting jack is provided with force snesor, test beam is provided with between described lifting jack and pedestal, described test beam and lifting jack and pedestal hinged.
2. a kind of structure of being convenient to according to claims 1 holds the secondary loading load testing machine carrying and reinforce, it is characterized in that: the concrete connected mode between described bearing and rigid ground is, fixing rigid connecting fishplate bar with the corresponding bearing place of rigid ground, bearing is connected with rigid ground by foot bolt and screw rod.
3. a kind of according to claims 1 is convenient to structure and is held the secondary loading load testing machine carrying and reinforce, and it is characterized in that: described crossbeam by bolt with hold stand and be connected.
4. a kind of structure of being convenient to according to claims 1 holds the secondary loading load testing machine carrying and reinforce, and it is characterized in that: described lifting jack is mechanic jacks, and described lifting jack is connected with crossbeam by bolt.
5. be convenient to structure and hold a method for making of carrying the secondary loading load testing machine reinforced, it is characterized in that, comprise the following steps:
(1) pedestal is set on rigid ground;
(2) make heavy frame by H profile steel, offer circular hole at its bottom support bracket place;
(3) by foot bolt and screw rod, heavy frame is firmly connected with rigid ground;
(4) make crossbeam by H profile steel, make it be connected with heavy frame by bolt;
(5) by bolt, lifting jack is connected with crossbeam.
6. a kind of structure of being convenient to according to claims 5 holds the method for making of carrying the secondary loading load testing machine reinforced, and it is characterized in that: in step (4), described crossbeam is parallel with rigid ground.
7. a kind of structure of being convenient to according to claims 5 holds the method for making of carrying the secondary loading load testing machine reinforced, and it is characterized in that: in step (5), described lifting jack is mechanic jacks.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410728543.5A CN104359764A (en) | 2014-12-05 | 2014-12-05 | Secondary stress loading test device convenient for reinforcing structure under constant load and manufacturing method of secondary stress loading test device |
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| CN201410728543.5A CN104359764A (en) | 2014-12-05 | 2014-12-05 | Secondary stress loading test device convenient for reinforcing structure under constant load and manufacturing method of secondary stress loading test device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106644327A (en) * | 2017-02-28 | 2017-05-10 | 南京工业大学 | Device and method for test of structural member three-dimensional independent loading |
| CN107271281A (en) * | 2017-07-18 | 2017-10-20 | 国网四川省电力公司经济技术研究院 | Experimental rig and method for double-deck armored concrete spread foundation uplift test |
| CN107917785A (en) * | 2017-10-24 | 2018-04-17 | 华南理工大学 | A kind of girder steel stability test load loading device based on lever principle |
| CN109100232A (en) * | 2018-09-06 | 2018-12-28 | 中建三局第三建设工程有限责任公司 | The experimental rig and application method of cone vertical bearing capacity are climbed for detecting bridge tower |
| CN111335349A (en) * | 2020-03-23 | 2020-06-26 | 五冶集团上海有限公司 | Method for modifying and installing foundation bolt of steel structure by rapid process |
| CN114279667A (en) * | 2022-03-07 | 2022-04-05 | 成都理工大学 | Pseudo-static anti-seismic test device and method for wallboard joint |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644327A (en) * | 2017-02-28 | 2017-05-10 | 南京工业大学 | Device and method for test of structural member three-dimensional independent loading |
| CN107271281A (en) * | 2017-07-18 | 2017-10-20 | 国网四川省电力公司经济技术研究院 | Experimental rig and method for double-deck armored concrete spread foundation uplift test |
| CN107271281B (en) * | 2017-07-18 | 2019-10-18 | 国网四川省电力公司经济技术研究院 | Experimental rig and method for the double-deck armored concrete spread foundation uplift test |
| CN107917785A (en) * | 2017-10-24 | 2018-04-17 | 华南理工大学 | A kind of girder steel stability test load loading device based on lever principle |
| CN107917785B (en) * | 2017-10-24 | 2019-08-20 | 华南理工大学 | A kind of girder steel stability test load loading device based on lever principle |
| CN109100232A (en) * | 2018-09-06 | 2018-12-28 | 中建三局第三建设工程有限责任公司 | The experimental rig and application method of cone vertical bearing capacity are climbed for detecting bridge tower |
| CN109100232B (en) * | 2018-09-06 | 2023-12-05 | 中建三局第三建设工程有限责任公司 | Testing device for detecting vertical bearing capacity of climbing cone of bridge tower and using method |
| CN111335349A (en) * | 2020-03-23 | 2020-06-26 | 五冶集团上海有限公司 | Method for modifying and installing foundation bolt of steel structure by rapid process |
| CN114279667A (en) * | 2022-03-07 | 2022-04-05 | 成都理工大学 | Pseudo-static anti-seismic test device and method for wallboard joint |
| US11714025B1 (en) | 2022-03-07 | 2023-08-01 | Chengdu University Of Technology | Pseudo-static test device and method for seismic behavior of connection joints of wallboard |
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Application publication date: 20150218 |