CN105699203A - Test device and method for measuring compressive strength of building materials under ambient pressure - Google Patents

Test device and method for measuring compressive strength of building materials under ambient pressure Download PDF

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Publication number
CN105699203A
CN105699203A CN201610251343.4A CN201610251343A CN105699203A CN 105699203 A CN105699203 A CN 105699203A CN 201610251343 A CN201610251343 A CN 201610251343A CN 105699203 A CN105699203 A CN 105699203A
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China
Prior art keywords
confined pressure
pressure
bearing device
bearing
construction material
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CN201610251343.4A
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Chinese (zh)
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CN105699203B (en
Inventor
宋修广
马源
张宏博
孙润生
王珂
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Shandong University
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Shandong University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12Pressure testing

Abstract

The invention discloses a test device for measuring compressive strength of building materials under ambient pressure. The test device comprises a base, a counterforce support, a vertical loading device and transverse loading devices. The counterforce support is arranged in the middle of the base, and the transverse loading devices are arranged on two sides of the counterforce support symmetrically. The vertical loading device is downwardly arranged on the crossbeam of the counterforce support, and the bottom of the vertical loading device is connected with a bearing device. The bearing device comprises an upper bearing device and a lower bearing device. A semispherical support is arranged at the center between the upper bearing device and the lower bearing device, the upper bearing device and the lower bearing device are connected with guide rods mounted at the four corners of the top surface of the lower bearing device, and the guide rods penetrate the upper bearing device. Moreover, a spring is sleeved with the upper portion of the upper bearing device, and a press plate is arranged on top of the spring and fixed by nuts screwed on the guide rods. The test device can load ambient load and vertical load onto the test samples, and the peak compressive strength of the test samples under different ambient loads can be achieved.

Description

A kind of assay device measuring construction material comprcssive strength under confined pressure and method
Technical field
The invention belongs to construction material (mainly concrete and concrete composite material are main) detection technique field, be specifically related to a kind of assay device measuring construction material comprcssive strength under confined pressure and method。
Background technology
Along with the fast development of China's economy, civil engineering industry is developing in high speed also。Increasing material is used in civil engineering, along with the appearance of increasing material and version, has more promoted the development of civil engineering industry。Xoncrete structure applies maximum structure types as in contemporary building and hydraulic engineering, is widely used to the engineerings such as hydraulic engineering, civil buildings, road and bridge, sea work and harbour, nuclear power station and military protection。In xoncrete structure, giving coagulation with horizontal confined pressure, the structure adding reinforced concrete vertical compression intensity is widely used gradually。Such as, a kind of novel composite material tire-soil utilizes tire that inner stuffing is carried out horizontal constraint exactly, it is provided that confined pressure, improves the comprcssive strength of this composite element。The problem that these materials are directed to a confined pressure, it may be assumed that when providing certain confined pressure, the vertical compression intensity of this material can improve how many, can bring up to what degree。Having a lot of structures is all utilize horizontal confined pressure, improves the vertical compression intensity of this structure or material, so the invention of this device is necessary。
Summary of the invention
The present invention is to solve the problems referred to above, propose a kind of assay device measuring construction material comprcssive strength under confined pressure and method, sample can be loaded confined pressure load and vertical load by the present invention simultaneously, it is possible to realize the maximum compressive strength of sample under different confined pressure load。
To achieve these goals, the present invention adopts the following technical scheme that
A kind of measure construction material assay device of comprcssive strength under confined pressure, including base, reaction frame, vertical loading device and horizontal charger, described reaction frame is arranged in the middle part of base, described reaction frame be symmetrically arranged on two with horizontal charger, to having vertical loading device on the crossbeam of described reaction frame, it is connected with pressure-bearing device bottom described vertical loading device, described pressure-bearing device includes pressure-bearing device and lower pressure-bearing device, between described upper pressure-bearing device and lower pressure-bearing device, center is provided with hemispherical support, described upper pressure-bearing device and lower pressure-bearing device are connected by the guide post being arranged on four angles of lower pressure-bearing device end face, the described guide post upper pressure-bearing device of traverse, and it is set with spring at the upper section of upper pressure-bearing device, described spring top is provided with pressing plate, described pressing plate is fixed by the nut tightened on the guide bar。
Described horizontal charger includes the first column, lowering or hoisting gear and confined pressure charger, and a facade of described first column is provided with the lowering or hoisting gear of lifting, and on described lowering or hoisting gear, level is provided with confined pressure charger。
Described lowering or hoisting gear includes guide rail, slide block, bearing platform and vertical drive, equipped with the slide block that can slide up and down along guide rail on described guide rail, described slide block is fixed with bearing platform, and described bearing platform is connected with vertical drive。
The cross section of described bearing platform is L-shaped。
Described confined pressure charger includes confined pressure sensor, confined pressure driving device, confined pressure connecting rod and confined pressure load plate, one end of described confined pressure sensor is fixed on lowering or hoisting gear, the other end is connected with one end of confined pressure driving device, the other end of described confined pressure driving device is connected with one end of confined pressure connecting rod, the other end of described confined pressure connecting rod is fixed with confined pressure load plate, and described confined pressure sensor, confined pressure driving device and confined pressure connecting rod are coaxial。
Described confined pressure load plate is circular arc type semicircular plate。
Described vertical loading device includes top hydraulic driver, top pressure sensor and balance base plate, described top pressure sensor is fixed on reaction frame, the top of described level pressure driving device with top pressure sensor is connected, bottom is connected with pressure-bearing device, described pressure-bearing device be connected with balance base plate。
Described reaction frame is made up of the crossbeam of two the second columns vertically be arrangeding in parallel and two the second column tops of connection, and the center of described crossbeam bottom surface is to having top hydraulic driver。
Described vertical drive, confined pressure driving device and top hydraulic driver are cylinder, hydraulic cylinder or jack。
Use the test method of a kind of assay device measuring construction material comprcssive strength under confined pressure and method, comprise the following steps:
(1) integrity of each parts of checkout facility device and motility, it is ensured that assay device can be properly functioning;
(2) adjust vertical drive, make bearing platform move up and down, until confined pressure load plate is corresponding with specimen height, and adjust confined pressure driving device, apply the lateral load set to sample;
(3) lateral load keeping sample is constant, adjusts top hydraulic driver and sample is applied vertical load, record maximum vertical load when sample destroys;
(4) change sample, change lateral load numerical value, repeat step (2)~(3);
(5) draw Mohr's circle, and draw out the tangent line of Mohr's circle, obtain the C value of sample withValue。
The invention have the benefit that
(1) sample can be loaded confined pressure load and vertical load by the present invention simultaneously, it is possible to realize the maximum compressive strength of sample under different confined pressure load;
(2) present configuration is simple, reasonable in design, using the teaching of the invention it is possible to provide experimental data accurately。
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is transverse direction charger schematic diagram of the present invention;
Fig. 3 is vertical loading device schematic diagram of the present invention;
Fig. 4 is pressure-bearing device schematic diagram of the present invention;
Wherein, 1, base, 2, vertical loading device, 3, horizontal charger, 4, the first column, 5, guide rail, 6, slide block, 7, bearing platform, 8, micro-pressure sensor, 9, confined pressure driving device, 10, confined pressure connecting rod, 11, confined pressure load plate, 12, vertical drive, the 13, second column, 14, crossbeam, 15, top hydraulic driver, 16, pressure-bearing device, 17, balance base plate, 161, upper pressure-bearing device, 162, lower pressure-bearing device, 163, guide post, 164, spring, 165, hemispherical supports。
Detailed description of the invention:
Below in conjunction with accompanying drawing, the invention will be further described with embodiment。
As shown in Figure 1, a kind of measure construction material assay device of comprcssive strength under confined pressure, including base 1, reaction frame, vertical loading device 2 and horizontal charger 3, described reaction frame is arranged in the middle part of base 1, described reaction frame be symmetrically arranged on two with horizontal charger 3。Described reaction frame is made up of two the second columns 13 vertically be arrangeding in parallel and the crossbeam 14 connecting two the second column 13 tops, the center of described crossbeam 14 bottom surface is to having top hydraulic driver 15, to having vertical loading device 2 on the crossbeam 14 of described reaction frame, it is connected with pressure-bearing device 16 bottom described vertical loading device 2, two horizontal chargers 3 are symmetrical arranged can to 1 certain balanced action of base, making center of gravity in whole equipment be positioned at the center of base 1, vertical loading device 2 for applying the load of vertical direction to sample;Horizontal charger 3 has two, is separately positioned on the both sides of vertical loading device 2, and is symmetrical set, the both sides of sample are further applied load, and forms the confined pressure of sample。
As in figure 2 it is shown, described horizontal charger 3 includes the first column 4, lowering or hoisting gear and confined pressure charger, a facade of described first column 4 being provided with the lowering or hoisting gear of lifting, on described lowering or hoisting gear, level is provided with confined pressure charger。Described lowering or hoisting gear includes guide rail 5, slide block 6, bearing platform 7 and vertical drive 12, equipped with the slide block 6 that can slide up and down along guide rail 5 on described guide rail 5, described slide block 6 is fixed with bearing platform 7, and described bearing platform 7 is connected with vertical drive 12。The cross section of described bearing platform 7 is L-shaped。Described confined pressure charger includes confined pressure sensor 8, confined pressure driving device 9, confined pressure connecting rod 10 and confined pressure load plate 11, one end of described confined pressure sensor 8 is fixed on lowering or hoisting gear, the other end is connected with one end of confined pressure driving device 9, the other end of described confined pressure driving device 9 is connected with one end of confined pressure connecting rod 10, the other end of described confined pressure connecting rod 10 is fixed with confined pressure load plate 11, and described confined pressure sensor 8, confined pressure driving device 9 and confined pressure connecting rod 10 are coaxial。Described confined pressure load plate 11 is circular arc type semicircular plate。Concrete, in use, start vertical drive 12, make the weighing unit being arranged on slide block 6 move along guide rail 5, it is achieved the lifting of confined pressure charger, in order to adjust the upper-lower position of confined pressure charger, after having adjusted the upper-lower position of confined pressure charger, start confined pressure driving device 9, make confined pressure load plate 11 that sample is carried out confined pressure loading, when confined pressure sensor 8 arrives and sets load, confined pressure driving device 9 is made to stop loading。
As shown in Figure 3, described vertical loading device 2 includes top hydraulic driver 15, top pressure sensor and balance base plate 17, described top pressure sensor is fixed on reaction frame, the top of described top hydraulic driver 15 is connected with top pressure sensor, bottom be connected with pressure-bearing device 16, described pressure-bearing device 16 be connected with balance base plate 17。Balance base plate 17 is positioned at the upper surface of base 1, position is in the underface of pressure-bearing device 16, as shown in Figure 4, described pressure-bearing device 16 includes pressure-bearing device 161 and lower pressure-bearing device 162, between described upper pressure-bearing device 161 and lower pressure-bearing device 162, center is provided with hemispherical and supports 165, described upper pressure-bearing device 161 and lower pressure-bearing device 162 are connected by the guide post 163 being arranged on lower four angles of pressure-bearing device 162 end face, the described guide post 163 upper pressure-bearing device 161 of traverse, and it is set with spring 164 at the upper section of upper pressure-bearing device 161, described spring 164 top is provided with pressing plate, described pressing plate is fixed by the nut being tightened on guide post 163。After selected confined pressure payload values, start top hydraulic driver 15 and sample is carried out vertical direction loading load, the maximum until sample is destroyed, when record sample destroys。
Described vertical drive 12, confined pressure driving device 9 and top hydraulic driver 15 are cylinder, hydraulic cylinder or jack, adopt jack, it is possible to provide bigger load to sample in the present embodiment。
Use the test method of a kind of assay device measuring construction material comprcssive strength under confined pressure and method, comprise the following steps:
(1) integrity of each parts of checkout facility device and motility, it is ensured that assay device can be properly functioning;
(2) adjust vertical drive 12, make bearing platform 7 move up and down, until confined pressure load plate 11 is corresponding with specimen height, and adjust confined pressure driving device 9, apply the lateral load set to sample;
(3) lateral load keeping sample is constant, adjusts top hydraulic driver 15 and sample is applied vertical load, record maximum vertical load when sample destroys;
(4) change sample, change lateral load numerical value, repeat step (2)~(3);
(5) draw Mohr's circle, and draw out the tangent line of Mohr's circle, obtain the C value of sample withValue。
The specific embodiment of the present invention is described in conjunction with accompanying drawing although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme, those skilled in the art need not pay various amendments or deformation that creative work can make still within protection scope of the present invention。

Claims (10)

1. measure construction material assay device of comprcssive strength under confined pressure for one kind, it is characterized in that: include base, reaction frame, vertical loading device and horizontal charger, described reaction frame is arranged in the middle part of base, described reaction frame be symmetrically arranged on two with horizontal charger, to having vertical loading device on the crossbeam of described reaction frame, it is connected with pressure-bearing device bottom described vertical loading device, described pressure-bearing device includes pressure-bearing device and lower pressure-bearing device, between described upper pressure-bearing device and lower pressure-bearing device, center is provided with hemispherical support, described upper pressure-bearing device and lower pressure-bearing device are connected by the guide post being arranged on four angles of lower pressure-bearing device end face, the described guide post upper pressure-bearing device of traverse, and it is set with spring at the upper section of upper pressure-bearing device, described spring top is provided with pressing plate, described pressing plate is fixed by the nut tightened on the guide bar。
2. as claimed in claim 1 a kind of measure construction material assay device of comprcssive strength under confined pressure, it is characterized in that: described horizontal charger includes the first column, lowering or hoisting gear and confined pressure charger, being provided with the lowering or hoisting gear of lifting on one facade of described first column, on described lowering or hoisting gear, level is provided with confined pressure charger。
3. as claimed in claim 2 a kind of measure construction material assay device of comprcssive strength under confined pressure, it is characterized in that: described lowering or hoisting gear includes guide rail, slide block, bearing platform and vertical drive, equipped with the slide block that can slide up and down along guide rail on described guide rail, being fixed with bearing platform on described slide block, described bearing platform is connected with vertical drive。
4. as claimed in claim 3 a kind of measure construction material assay device of comprcssive strength under confined pressure, it is characterized in that: the cross section of described bearing platform is L-shaped。
5. as claimed in claim 2 a kind of measure construction material assay device of comprcssive strength under confined pressure, it is characterized in that: described confined pressure charger includes confined pressure sensor, confined pressure driving device, confined pressure connecting rod and confined pressure load plate, one end of described confined pressure sensor is fixed on lowering or hoisting gear, the other end is connected with one end of confined pressure driving device, the other end of described confined pressure driving device is connected with one end of confined pressure connecting rod, the other end of described confined pressure connecting rod is fixed with confined pressure load plate, and described confined pressure sensor, confined pressure driving device and confined pressure connecting rod are coaxial。
6. as claimed in claim 5 a kind of measure construction material assay device of comprcssive strength under confined pressure, it is characterized in that: described confined pressure load plate is circular arc type semicircular plate。
7. as claimed in claim 1 a kind of measure construction material assay device of comprcssive strength under confined pressure, it is characterized in that: described vertical loading device includes top hydraulic driver, top pressure sensor and balance base plate, described top pressure sensor is fixed on reaction frame, the top of described level pressure driving device is connected with top pressure sensor, bottom be connected with pressure-bearing device, described pressure-bearing device be connected with balance base plate。
8. as claimed in claim 7 a kind of measure construction material assay device of comprcssive strength under confined pressure, it is characterized in that: described reaction frame is made up of the crossbeam of two the second columns vertically be arrangeding in parallel and two the second column tops of connection, and the center of described crossbeam bottom surface is to having top hydraulic driver。
9. a kind of as described in claim 3,5,7 measures construction material assay device of comprcssive strength under confined pressure, it is characterized in that: described vertical drive, confined pressure driving device and top hydraulic driver are cylinder, hydraulic cylinder or jack。
10. use the test method of a kind of assay device measuring construction material comprcssive strength under confined pressure as claimed in claim 1 and method, it is characterized in that, comprise the following steps:
(1) integrity of each parts of checkout facility device and motility, it is ensured that assay device can be properly functioning;
(2) adjust vertical drive, make bearing platform move up and down, until confined pressure load plate is corresponding with specimen height, and adjust confined pressure driving device, apply the lateral load set to sample;
(3) lateral load keeping sample is constant, adjusts top hydraulic driver and sample is applied vertical load, record maximum vertical load when sample destroys;
(4) change sample, change lateral load numerical value, repeat step (2)~(3);
(5) draw Mohr's circle, and draw out the tangent line of Mohr's circle, obtain the C value of sample withValue。
CN201610251343.4A 2016-04-21 2016-04-21 A kind of experimental rig and method for measuring construction material compression strength under confined pressure Active CN105699203B (en)

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CN106128259A (en) * 2016-07-08 2016-11-16 山东科技大学 A kind of equivalent material simulating tomography assay device and test method
CN111398025A (en) * 2020-04-20 2020-07-10 太原理工大学 Confining pressure loading device for drop hammer impact test
CN112112153A (en) * 2019-06-19 2020-12-22 沈军 Efficient construction method for segmental pile
CN112268786A (en) * 2020-11-03 2021-01-26 青岛理工大学 Rock-like material bidirectional pressure test device and working method

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CN103175728A (en) * 2013-02-07 2013-06-26 西安理工大学 Dynamic true-triaxial apparatus for soil
CN104062182A (en) * 2014-05-16 2014-09-24 山东科技大学 Testing system for evolution process of deep mining stress field
CN205506574U (en) * 2016-04-21 2016-08-24 山东大学 Measure building material compressive strength's under confined pressure test device

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US3797303A (en) * 1971-11-29 1974-03-19 Anvar Biaxial compression-testing machine
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Publication number Priority date Publication date Assignee Title
CN106128259A (en) * 2016-07-08 2016-11-16 山东科技大学 A kind of equivalent material simulating tomography assay device and test method
CN112112153A (en) * 2019-06-19 2020-12-22 沈军 Efficient construction method for segmental pile
CN112112153B (en) * 2019-06-19 2022-02-15 沈军 Efficient construction method for segmental pile
CN111398025A (en) * 2020-04-20 2020-07-10 太原理工大学 Confining pressure loading device for drop hammer impact test
CN112268786A (en) * 2020-11-03 2021-01-26 青岛理工大学 Rock-like material bidirectional pressure test device and working method

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