CN105571951A - Internal water pressure and external load combined loading test device and test method for buried rigid pressure pipeline - Google Patents
Internal water pressure and external load combined loading test device and test method for buried rigid pressure pipeline Download PDFInfo
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- CN105571951A CN105571951A CN201610061079.8A CN201610061079A CN105571951A CN 105571951 A CN105571951 A CN 105571951A CN 201610061079 A CN201610061079 A CN 201610061079A CN 105571951 A CN105571951 A CN 105571951A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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Abstract
The invention relates to an internal water pressure and external load combined loading test device and test method for a buried rigid pressure pipeline. The test device comprises an external load tester and an internal water pressure tester; the test device is characterized in that two sections of connecting pipes are included; the internal water pressure tester is horizontally placed in a test space of the external load tester, and a hydrostatic tester inner container which is arranged on the internal water pressure tester and used for being installed in a target test pipe is lengthened; the two sections of connecting pipes are used for being connected to the two ends of the target test pipe respectively, and the other ends of the two sections of connecting pipes are used for being connected with ports formed in the two ends of the internal water pressure tester respectively. The test method comprises the steps that firstly, the two sections of connecting pipes are connected to the two ends of the target test pipe; secondly, the connecting pipes and the target test pipe are jointly arranged on the hydrostatic tester inner container of the internal water pressure tester in a sleeving mode; thirdly, the internal water pressure tester is placed in the test space of the external load tester, the target test pipe is kept to be horizontally placed, and an internal water pressure and external load combined loading test is performed. According to the device and the method, operation is easy, and test results are visual and true.
Description
Technical field
The interior hydraulic pressure and the external load that the present invention relates to a kind of buried rigid pressure pipeline combine bearing test equipment and test method, belong to pipeline load carrying capacity test technical field.
Background technology
Bury land pressure pipeline generally need bear the external loads such as the native load of conduit upper soil, ground vehicle pedestrian load in normal operating conditions, and the internal water pressure of pipe interior.After pipe design manufacture completes, in order to the performance checking it to bear interior hydraulic pressure and external load, need to carry out structural clays.
Current industry generally adopts the hydraulic testing or cracking resistance external load test (GB/T16752 " Test methods of concrete and reinforced concrete drainage and sewer pipes ", GB/T15345 " concrete water transmission pipe test method ") in cracking resistance to the structural clays of bury land pressure pipeline.Need when doing the hydraulic testing in cracking resistance, by converting, the external load that pipeline should bear being converted to internal water pressure, to add the internal water pressure that pipeline should bear, by both sums, the hydraulic testing in cracking resistance is carried out to pipeline; Need equally when doing the test of cracking resistance external load, by converting, the internal water pressure that pipeline should bear being converted to external load, to add the external load that pipeline should bear, by both sums, the test of cracking resistance external load is carried out to pipeline.
The principle that interior hydraulic pressure and external load are converted mutually makes concrete in tension or pressurized edge produce equal stress, and interior hydraulic pressure now and the action effect of external load are identical, therefore can mutually change.When lacking corresponding research technique, in cracking resistance through converting, the hydraulic testing or cracking resistance external load test its result is also can be received, but must recognize such test and the actual conditions of incomplete coincidence tube road under buried, normal water flowing state.Internal water pressure (when being not equal to 0) is all tunneling boring tension to the action effect of pipeline in any cross section, and the action effect of external load to pipeline is similar to simple bending, pipe side large eccentric pressuring at the bottom of pipe push pipe.Therefore, the actual loading situation of pipeline is axial tension superposition simple bending at the bottom of pipe push pipe, pipe side axial tension superposition large eccentric pressuring, and the common test method of industry cannot accomplish the effect of superposition at present, although tension or pressurized edge can simulate ess-strain during pipeline actual motion, but the ess-strain gradient along tube wall radial direction during pipeline actual motion is but to simulate out, particularly for the pipeline having certain thickness composite structure, it is very important that certain material of ad-hoc location runs pipe safety in the ess-strain situation of pipeline actual motion, but current test method cannot be simulated out.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of interior hydraulic pressure of buried rigid pressure pipeline and external load to combine bearing test equipment and test method, it is simple to operate, and test findings is intuitively true.
According to technical scheme provided by the invention: the interior hydraulic pressure of buried rigid pressure pipeline and external load associating bearing test equipment, comprise external applied load testing machine and interior hydrostatic testing machine, it is characterized in that: also comprise two joint connecting pipes; Described interior hydrostatic testing machine lies in a horizontal plane in the test space of external applied load testing machine, and interior hydrostatic testing machine lengthens for the hydraulic testing machine liner be contained in targeted test pipe; Two described joint connecting pipes are respectively used to be connected to targeted test pipe two ends, and the other end of two joint connecting pipes is respectively used to two end interfaces connecting interior hydrostatic testing machine.
As a further improvement on the present invention, described external applied load testing machine comprises strut beam, loading oil cylinder, loading beam, pull bar and lower strut beam, be connected by pull bar between upper strut beam with lower strut beam, described loading oil cylinder one end is connected on strut beam, and the other end connects loading beam downwards.
As a further improvement on the present invention, the interface at described connecting pipe two ends is identical with the interface at targeted test pipe two ends, and connecting pipe is spigot-and-socket flexible joint steel pipe.
The interior hydraulic pressure of buried rigid pressure pipeline and external load associating bearing test method, is characterized in that comprising the steps:
(1), the interior hydrostatic testing machine that adopts hydraulic testing machine liner to lengthen, two joint connecting pipes are connected to the two ends of targeted test pipe, described connecting pipe adopts spigot-and-socket flexible joint steel pipe;
(2), be jointly sleeved on the hydraulic testing machine liner of interior hydrostatic testing machine by the targeted test pipe connected and two joint connecting pipes, the other end of two joint connecting pipes connects two end interfaces of interior hydrostatic testing machine respectively;
(3), adopting external applied load testing machine, being placed in the test space of external applied load testing machine by installing hydrostatic testing machine in targeted test pipe, interior hydrostatic testing machine and targeted test pipe keep horizontal positioned;
(4), simultaneously start external applied load testing machine and interior hydrostatic testing machine, carry out interior hydraulic pressure and the test of external load combination loading.
compared with prior art, tool has the following advantages in the present invention:the present invention is simple to operate, overcome the defect that existing test method can only carry out separately the hydraulic testing or the test of cracking resistance external load in cracking resistance, two kinds of tests are combined, in realizing, the hydraulic testing and external load test are carried out simultaneously, the performance of bury land pressure pipeline under the acting in conjunction by interior hydraulic pressure and external load can be detected intuitively, the ess-strain situation of tube wall radial each position when the actual water flowing of real simulation bury land pressure pipeline runs, without the need to carrying out the conversion of interior hydraulic pressure or external load again, what be applicable to bury land pressure pipeline structural design theory and the quality of production checks checking, become the bridge of contact theory and practice.
Accompanying drawing explanation
Fig. 1 is structure and the application schematic diagram of the embodiment of the present invention.
Fig. 2 is the assembling situation schematic diagram that targeted test pipe and two saves connecting pipe.
The structural representation of the interior hydrostatic testing machine that Fig. 3 embodiment of the present invention hydraulic testing machine liner lengthens.
Embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
As shown in the figure: the interior hydraulic pressure of the buried rigid pressure pipeline in embodiment and external load associating bearing test equipment form primarily of external applied load testing machine 1, interior hydrostatic testing machine 2 and two joint connecting pipes 3.
As shown in Fig. 1 ~ Fig. 3, described interior hydrostatic testing machine 2 lies in a horizontal plane in the test space of external applied load testing machine 1, and interior hydrostatic testing machine 2 lengthens for the hydraulic testing machine liner 2a be contained in targeted test pipe 4; Two described joint connecting pipes 3 are respectively used to be connected to targeted test pipe 4 two ends, and the other end of two joint connecting pipes 3 is respectively used to two end interfaces connecting interior hydrostatic testing machine 2.
As shown in Figure 1, in the embodiment of the present invention, described external applied load testing machine 1 forms primarily of upper strut beam 1.1, loading oil cylinder 1.2, loading beam 1.3, pull bar 1.4 and lower strut beam 1.5, be connected by pull bar 1.4 between upper strut beam 1.1 with lower strut beam 1.5, described loading oil cylinder 1.2 one end is connected on strut beam 1.1, and the other end connects loading beam 1.3 downwards.
As shown in Figure 1 and Figure 2, in the embodiment of the present invention, the interface at described connecting pipe 3 two ends is identical with the interface at targeted test pipe 4 two ends, and connecting pipe 3 is spigot-and-socket flexible joint steel pipe.
The interior hydraulic pressure of described buried rigid pressure pipeline and external load associating bearing test method comprise the steps:
(1), the interior hydrostatic testing machine 2 that adopts hydraulic testing machine liner 2a to lengthen, by the two ends shown in Fig. 2, two joint connecting pipes 3 being connected to targeted test pipe 4, described connecting pipe 3 adopts spigot-and-socket flexible joint steel pipe;
(2), be more jointly sleeved on the hydraulic testing machine liner 2a of interior hydrostatic testing machine 2 by shown in Fig. 1 by the targeted test pipe 4 connected and two joint connecting pipes 3, the other end of two joint connecting pipes 3 connects two end interfaces of interior hydrostatic testing machine 2 respectively;
(3), adopt external applied load testing machine 1, then be placed in the test space of external applied load testing machine 1 by shown in Fig. 1 by installing hydrostatic testing machine 2 in targeted test pipe 4, interior hydrostatic testing machine 2 and targeted test pipe 4 keep horizontal positioned;
(4), simultaneously start external applied load testing machine 1 and interior hydrostatic testing machine 2, carry out interior hydraulic pressure and the test of external load combination loading.
The present invention is lengthened by the hydraulic testing machine liner 2a of internal hydrostatic testing machine 2, makes interior hydrostatic testing machine 2 have the ability of test objective developmental tube 4 and connecting pipe 3 addition simultaneously.What the connecting pipe 3 in the present invention adopted is spigot-and-socket flexible joint steel pipe, because steel pipe is the pressure tubing that a kind of hoop intensity is higher, rigidity is lower, the present invention is ingenious make use of this feature of steel pipe, the targeted test pipe 4 larger with relative stiffness combines, when carrying out interior hydraulic pressure and external load Combined Trials, transmit water pressure by steel pipe, make targeted test pipe 4 hoop tunneling boring tension, simulate the effect of buried force pipe by interior hydraulic pressure effect; Simultaneously, under the effect of outer load testing machine loading beam 1.3, targeted test pipe 4 produces the effect of simple bending, pipe side large eccentric pressuring at the bottom of the pipe push pipe identical with buried state, now steel pipe due to hoop rigidity lower, the contribution of its opposing external load is negligible, and due to the interface of steel pipe identical with the interface of targeted test pipe 4, be spigot-and-socket flexible interface, targeted test pipe 4 there will be a certain amount of distortion when carrying out external load test at Impact direction, and spigot-and-socket flexible interface still can keep sealing when targeted test pipe 4 has certain deflection.
Claims (4)
1. the interior hydraulic pressure of buried rigid pressure pipeline and external load associating bearing test equipment, comprise external applied load testing machine (1) and interior hydrostatic testing machine (2), it is characterized in that: also comprise two joint connecting pipes (3); Described interior hydrostatic testing machine (2) lies in a horizontal plane in the test space of external applied load testing machine (1), and interior hydrostatic testing machine (2) lengthens for the hydraulic testing machine liner (2a) be contained in targeted test pipe (4); Two described joints connecting pipe (3) are respectively used to be connected to targeted test pipe (4) two ends, and the other end of two joints connecting pipe (3) is respectively used to two end interfaces connecting interior hydrostatic testing machine (2).
2. the interior hydraulic pressure of buried rigid pressure pipeline as claimed in claim 1 and external load associating bearing test equipment, it is characterized in that: described external applied load testing machine (1) comprises strut beam (1.1), loading oil cylinder (1.2), loading beam (1.3), pull bar (1.4) and lower strut beam (1.5), be connected by pull bar (1.4) between upper strut beam (1.1) with lower strut beam (1.5), described loading oil cylinder (1.2) one end is connected on strut beam (1.1), and the other end connects loading beam (1.3) downwards.
3. the interior hydraulic pressure of buried rigid pressure pipeline as claimed in claim 1 and external load associating bearing test equipment, it is characterized in that: the interface at described connecting pipe (3) two ends is identical with the interface at targeted test pipe (4) two ends, connecting pipe (3) is spigot-and-socket flexible joint steel pipe.
4. the interior hydraulic pressure of buried rigid pressure pipeline and external load associating bearing test method, is characterized in that comprising the steps:
(1), adopt hydraulic testing machine liner (2a) the interior hydrostatic testing machine (2) that lengthens, two joints connecting pipe (3) are connected to the two ends of targeted test pipe (4), described connecting pipe (3) adopts spigot-and-socket flexible joint steel pipe;
(2), be jointly sleeved on the hydraulic testing machine liner (2a) of interior hydrostatic testing machine (2) by the targeted test pipe (4) connected and two joints connecting pipe (3), the other end of two joints connecting pipe (3) connects two end interfaces of interior hydrostatic testing machine (2) respectively;
(3), adopt external applied load testing machine (1), be placed in the test space of external applied load testing machine (1) by the interior hydrostatic testing machine (2) installing targeted test pipe (4), interior hydrostatic testing machine (2) and targeted test pipe (4) keep horizontal positioned;
(4), simultaneously start external applied load testing machine (1) and interior hydrostatic testing machine (2), carry out interior hydraulic pressure and the test of external load combination loading.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610061079.8A CN105571951B (en) | 2016-01-28 | 2016-01-28 | Interior hydraulic pressure and external load the joint bearing test equipment and test method of buried rigid pressure pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610061079.8A CN105571951B (en) | 2016-01-28 | 2016-01-28 | Interior hydraulic pressure and external load the joint bearing test equipment and test method of buried rigid pressure pipeline |
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| CN105571951A true CN105571951A (en) | 2016-05-11 |
| CN105571951B CN105571951B (en) | 2018-04-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110598284A (en) * | 2019-08-29 | 2019-12-20 | 北京市燃气集团有限责任公司 | Method for evaluating external load bearing capacity of buried gas pipeline |
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| US5325722A (en) * | 1992-08-14 | 1994-07-05 | The United States Of America As Represented By The Secretary Of The Navy | Split pipe testing device for the measurement of bond of reinforcement under controlled confinement |
| KR100656073B1 (en) * | 2005-12-26 | 2006-12-11 | 주식회사 포스코 | Measurement method of forming limit diagram for hydroforming steel tube |
| CN102435504A (en) * | 2011-12-15 | 2012-05-02 | 中国石油天然气股份有限公司 | In-service pipeline combined load simulation test method and system |
| CN102778395A (en) * | 2011-05-13 | 2012-11-14 | 中国石油天然气股份有限公司 | In-service pipeline settlement simulation test method and device |
| CN103760033A (en) * | 2014-01-27 | 2014-04-30 | 欧阳杰 | Testing device for water pressure of pipe material and application method thereof |
| CN103822042A (en) * | 2014-03-14 | 2014-05-28 | 江苏华光双顺机械制造有限公司 | Upright water press |
| CN205483825U (en) * | 2016-01-28 | 2016-08-17 | 无锡华毅管道有限公司 | Interior water pressure that buries ground rigidity pipeline under pressure jointly adds lotus testing equipment with outer load |
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2016
- 2016-01-28 CN CN201610061079.8A patent/CN105571951B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5325722A (en) * | 1992-08-14 | 1994-07-05 | The United States Of America As Represented By The Secretary Of The Navy | Split pipe testing device for the measurement of bond of reinforcement under controlled confinement |
| KR100656073B1 (en) * | 2005-12-26 | 2006-12-11 | 주식회사 포스코 | Measurement method of forming limit diagram for hydroforming steel tube |
| CN102778395A (en) * | 2011-05-13 | 2012-11-14 | 中国石油天然气股份有限公司 | In-service pipeline settlement simulation test method and device |
| CN102435504A (en) * | 2011-12-15 | 2012-05-02 | 中国石油天然气股份有限公司 | In-service pipeline combined load simulation test method and system |
| CN103760033A (en) * | 2014-01-27 | 2014-04-30 | 欧阳杰 | Testing device for water pressure of pipe material and application method thereof |
| CN103822042A (en) * | 2014-03-14 | 2014-05-28 | 江苏华光双顺机械制造有限公司 | Upright water press |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110598284A (en) * | 2019-08-29 | 2019-12-20 | 北京市燃气集团有限责任公司 | Method for evaluating external load bearing capacity of buried gas pipeline |
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Inventor after: Wu Yueren Inventor after: Tao Zhefeng Inventor after: Zhu Lei Inventor after: Wang Xiaopeng Inventor after: Yao Jie Inventor after: Zhang Haifeng Inventor after: Wang Tao Inventor after: Xu Yingwu Inventor after: Wang Jianbin Inventor after: Fan Xuelian Inventor after: Ye Yuanxin Inventor after: Zheng Guoxing Inventor after: Shen Pangyong Inventor after: Zhong Junbin Inventor after: Wang Hongtao Inventor after: Xuan Feng Inventor after: Gu Bin Inventor before: Wu Yueren Inventor before: Yao Jie Inventor before: Wang Xiaopeng Inventor before: Gu Bin Inventor before: Zhang Haifeng Inventor before: Wang Tao Inventor before: Xu Yingwu Inventor before: Wang Jianbin Inventor before: Zhen Li Inventor before: Fan Xuelian Inventor before: Wang Hongtao Inventor before: Zheng Guoxing Inventor before: Ye Xinyuan Inventor before: Zhong Junbin Inventor before: Xuan Feng Inventor before: Tao Zhefeng Inventor before: Zhu Lei |
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