CN109507097B - Load-holding erosion test device for concrete bias column - Google Patents
Load-holding erosion test device for concrete bias column Download PDFInfo
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- CN109507097B CN109507097B CN201811416638.8A CN201811416638A CN109507097B CN 109507097 B CN109507097 B CN 109507097B CN 201811416638 A CN201811416638 A CN 201811416638A CN 109507097 B CN109507097 B CN 109507097B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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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
- G01N3/02—Details
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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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
- G01N2203/024—Corrosive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
Abstract
The invention relates to a concrete biased column load-bearing erosion test device, which comprises a water tank, a water pressure control system, a water pipe joint, an oil pressure control system and a hydraulic cylinder, wherein the water tank is connected with the water pressure control system; the method is characterized in that: the water tank comprises a tank body and a tank cover; the box cover is provided with a mounting hole in the middle; the hydraulic cylinder is a single-piston-rod hydraulic cylinder, a piston rod penetrates through the mounting hole from the upper part of the box cover to enter the box body, and the hydraulic cylinder is fixed on the box cover in a sealing manner; the box cover is also provided with a valve; the left end of the box body is provided with a transverse wall plate, a box body water inlet hole is arranged at the middle part close to the upper part of the box body, and the box body water inlet hole is communicated with a water pressure control system through a water pipe joint; a window hole is formed in the middle of a bottom plate of the box body, a shaft sleeve with a flange A is arranged in the window hole, and a support stud and a sealing bag are arranged between the lower plane of the flange A and the bottom plate of the box body from outside to inside; the test device is used for carrying out a durability test under the effects of saline-alkali corrosion and ballast multi-coupling on the reinforced concrete member.
Description
Technical Field
The invention relates to a load-holding erosion test device for a concrete bias column, in particular to a load-holding erosion test device for a concrete bias column, and belongs to the field of concrete test equipment.
Background
In recent years, China builds a large number of reinforced concrete structure buildings in coastal areas to meet the needs of rapid development of economy, such as tunnel traffic. The tunnel runs through the underground, the mountain body and even the bottom of the river and the sea, does not occupy the land surface, shortens the driving mileage, relieves the traffic pressure and brings great convenience to the life of people. As is well known, the lining of the tunnel is made of reinforced concrete, the stratum pressure of the rock mass of the tunnel is borne by the reinforced concrete, and meanwhile, the underground water also applies larger osmotic water pressure to the outer side of the reinforced concrete lining, so that the tunnel lining is under the combined action of a stress field and a seepage field for a long time; in addition, tunnel linings are subject to erosion from corrosive media such as sulfates, chlorides contained in groundwater.
In order to know whether the concrete for tunnel lining can meet the corrosion of a stress field, a seepage field and a corrosive medium of a local tunnel and improve the service life of the tunnel to the maximum extent, a simulation test needs to be carried out on a concrete member of the tunnel lining in advance, and the design of the concrete for tunnel lining is determined through the test on the concrete member.
At present, most of test equipment for concrete members are single-project test devices, and the actual working state of tunnel lining cannot be effectively reflected, namely, high-simulation tests cannot be carried out.
Disclosure of Invention
Aiming at the technical defects of the existing test device, the invention provides the concrete bias column load-bearing erosion test device, which not only can artificially control the components, concentration and water pressure of a corrosive medium, but also can perform a compression test on a concrete member, and the load of the compression test is adjustable, thereby realizing a high-simulation test.
The invention is realized by the following technical scheme:
a concrete biased column load-bearing erosion test device comprises a water tank, a water pressure control system, a water pipe joint, an oil pressure control system and a hydraulic cylinder; the method is characterized in that: the water tank comprises a tank body and a tank cover; the box body is in a cuboid groove shape, a groove opening is upward, a flange is arranged on the groove opening, and a sealing gasket and a box cover are sequentially arranged on the flange; the flange is fixedly connected with the box cover; the box cover is provided with a mounting hole in the middle; the hydraulic cylinder is a single-piston-rod hydraulic cylinder, a piston rod penetrates through the mounting hole from the upper part of the box cover to enter the box body, and the hydraulic cylinder is fixed on the box cover in a sealing manner by utilizing a fixing hole on an end cover of the hydraulic cylinder; the box cover is also provided with a valve; a water inlet hole of the box body is arranged at the middle part close to the upper part of the transverse wall plate at the left end of the box body, and a water pipe joint is arranged outside the water inlet hole of the box body; the water pipe joint is communicated with a water pressure control system;
a window hole is formed in the middle of a bottom plate of the box body, a shaft sleeve is arranged in the window hole, and the shaft sleeve is in clearance fit with the window hole; the flange A is arranged at the upper opening part of the shaft sleeve; the radial middle part of the flange A is at least provided with three threaded holes which are uniformly distributed and run through the upper plane and the lower plane of the flange A; the upper plane of the flange A is provided with a rubber sealing gasket; placing a concrete test component on the rubber sealing gasket; a support stud and a sealing bag are arranged between the lower plane of the flange A and the bottom plate of the box body from outside to inside; the upper end of the support stud is connected into the threaded hole; the support stud is also provided with a locking nut; the lower end of the support stud is supported on a bottom plate of the box body; the sealing bag surrounds the shaft sleeve; the top of the sealing bag is fixedly connected to the lower plane of the flange A by an upper pressure plate; the bottom of the sealing bag is fixedly connected to a bottom plate of the box body by a lower pressing plate;
the bottom of the box body is also provided with box legs; the oil pressure control system controls the movement and the pressure of a piston in the hydraulic cylinder; the lower end of the piston rod is movably connected with a pressing plate;
when the axis of the end cover of the hydraulic cylinder is horizontally arranged, the left positioning journal and the right positioning journal are respectively arranged at the left end and the right end of the end cover, the journal matched with the mounting hole on the box cover is the left positioning journal, the right positioning journal matched with the cylinder sleeve hole of the hydraulic cylinder is the right positioning journal, the middle part of the end cover is step-shaped, the left side is circular, the right side is square, the side length of the end cover is less than or equal to that of an inscribed square of the left circular, so that the left thrust surface of the end cover is circular and the right thrust surface of the end cover is square, and a sealing groove B and a sealing groove C are correspondingly arranged on the left thrust surface and the right thrust surface; a piston rod guide hole is axially formed in the end cover; an E sealing groove, a liquid collecting groove and an F sealing groove are sequentially arranged in the guide hole from left to right in the axial direction; on the square peripheral plane in the middle of the end cover, the middle of each plane is provided with a drain hole communicated with the liquid collecting groove;
the water pressure control system comprises a water supply tank, a filter, a water pump, an unloading valve, a one-way valve and an overflow valve, wherein the input end of the water pump is connected with the water supply tank through the filter; the output end of the one-way valve is respectively connected with a water pipe joint at the left end of the box body, the control end (A end) of the unloading valve and a pressure gauge switch to the pressure gauge; an overflow valve is arranged on the right end face of the box body; the output end of the overflow valve is connected to the water supply tank.
The water tank is made of metal.
The metal material is 20 # high-quality carbon structural steel.
The surface of the water tank is provided with a protective layer.
The protective layer is made of epoxy resin.
The water pipe joint has the advantages that one end connected with the box body is the flange, and the other end of the water pipe joint is the round pipe with the external anti-loosening teeth.
The sealing bag is a rubber corrugated air bag.
The lower end of the piston rod is provided with a hinge hole.
The piston rod is movably connected with the pressure plate in a hinge connection mode.
The invention has the advantages and beneficial effects that:
the device has the advantages that the device realizes the aim of simultaneously carrying out load holding and permeation of the concrete member and meets the requirement of a seepage-stress field coupling effect test. The device can not only artificially control the components and concentration of corrosive medium, but also control the water pressure of the concrete member through a water pressure control system, and in addition, the overflow valve is arranged on the box body, so that the pressure water in the box body can imitate the flowing of natural underground water in a pressure-maintaining state; meanwhile, a hydraulic cylinder is used for carrying out a pressurization test on the concrete member, an oil pressure system with the hydraulic cylinder is used for adjusting the pressure intensity of the hydraulic cylinder, and a shaft sleeve hole is arranged for simulating a test of a bridge culvert under the coupling action of a seepage-stress field so as to realize a high-simulation test on the concrete member.
In addition, the end cover of the hydraulic cylinder realizes the bidirectional sealing of one end cover by arranging a bidirectional sealing ring and additionally arranging a liquid collecting groove and a drain hole. The length of the piston rod is automatically adjusted, so that the piston rod can adapt to concrete members with different sizes; therefore, the device not only realizes the simultaneous experiment of concrete member multifactor, but also can adapt to the experimental requirement of concrete member of different sizes through the piston rod regulatory function of pneumatic cylinder.
Advantages and features of the invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a longitudinal cross-sectional view of the device;
FIG. 2 is a top view of FIG. 1 with the cover removed;
FIG. 3 is an axial cross-sectional view of the end cap 25;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
fig. 5 is a hydraulic control system.
Wherein: 1. the box cover comprises a box cover 1a, a mounting hole 2, a sealing gasket, 3, a valve, 6, an A screw, 7, an A sealing ring, 8, a water pipe connector, 9, a B screw, 10, a box body, 10a, a box body water inlet hole, 10B, a window hole, 11, a box foot, 12, a locking nut, 13, a supporting stud, 15, a rubber sealing gasket, 16, an upper pressing plate, 17, a sealing bag, 18, a lower pressing plate, 19, a shaft sleeve, 19a, a shaft sleeve hole, 19B, an A flange, 21, a pressing plate, 22, a pin shaft, 23, a piston rod, 24, a B sealing ring, 25, an end cover, 26, an E sealing ring, 27, a C sealing ring, 28, an F sealing ring, 29 and a hydraulic cylinder.
2501. The hydraulic cylinder comprises a left thrust surface, 2502, a left positioning journal, 2503, an E sealing groove, 2504, a piston rod guide hole, 2505, a B sealing groove, 2506, a fixing hole, 2507, a drain hole, 2508, a C sealing groove, 2509, a liquid collecting groove, 2510, an F sealing groove, 2511, a right positioning journal, 2512, a right thrust surface, 2513, a mounting surface, 2514 and a hydraulic cylinder fixing hole.
61. The water supply system comprises a water supply tank, 62, a filter, 63, a water pump, 64, an unloading valve, 65, pressure gauges, 66, pressure gauge switches, 67, a check valve, 68 and an overflow valve.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the technical solution of the present invention will be further described with reference to the accompanying drawings.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The meaning of "left, right, front and back" in the present invention means that when the reader faces the attached drawings, the left side of the reader is left, the right side of the reader is right, the distance from the reader is front, and the distance from the reader is back, and is not a specific limitation to the present invention.
The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components through other components.
As shown in fig. 1 and 2, a concrete bias column load-bearing erosion test device comprises a water tank, a box body 10 and a box cover 1, wherein the water tank is formed by welding a metal carbon structural steel plate; the box body 10 is in a cuboid groove shape, the groove opening is upward, a flange is arranged outwards from the groove opening, a sealing gasket 2 and a box cover 1 are sequentially arranged on the flange, and the sealing gasket 2 is made of rubber; the box cover 1 is fixedly connected with a flange of the box body 10 through an A screw 6;
the middle part of the box cover 1 is provided with a mounting hole 1 a; the hydraulic cylinder 29 is a single-piston-rod hydraulic cylinder, the piston rod 23 penetrates through the mounting hole 1a from the upper part of the box cover 1 to enter the box body 10, the hydraulic cylinder 29 is hermetically fixed on the upper part of the box cover 1 through a B sealing ring 24, namely an O-shaped sealing ring, by utilizing a fixing hole 2506 of an upper end cover 25 of the hydraulic cylinder 29, the hydraulic cylinder 29 is controlled by an oil pressure control system, the load required by a pressurization test on a concrete member is ensured, and the test load is adjustable as required; the lower end of the piston rod 23 is hinged to the pressing plate 21 by means of a pin 22 in order to allow the pressing force on the pressing plate 21 to act uniformly on the concrete member. The box cover 1 is also provided with a valve 3 for evacuating the air inside the box body 10 when the box body is filled with water.
A box body water inlet hole 10a is formed in the left end transverse wall plate of the box body 10 close to the upper middle part, a water pipe connector 8 is arranged outside the box body water inlet hole 10a, the water pipe connector 8 and the water inlet hole 10a are concentric, one end of the water pipe connector 8 is a flange and is fixedly connected with the box body 10 through a B screw 9 and an A sealing ring 7, and the other end of the water pipe connector 8 is a circular pipe with anti-loosening teeth arranged on the outer portion and is connected with a water pressure control system;
a window hole 10b is formed in the middle of a bottom plate of the box body 10, a shaft sleeve 19 is arranged in the window hole 10b, and the shaft sleeve 19 is in clearance fit with the window hole 10 b; the upper opening part of the shaft sleeve 19 is provided with an A flange 19 b; the radial middle part of the flange A19 b is provided with four threaded holes which are uniformly distributed and run through the upper plane and the lower plane of the flange A19 b, the upper plane of the flange A19 b is provided with a rubber sealing gasket 15, and a concrete member to be tested is placed on the rubber sealing gasket 15; a support stud 13 and a sealing bag 17 are arranged between the lower plane of the flange A19 b and the bottom plate of the box body 10 from outside to inside; the upper end of the support stud 13 is connected into the threaded hole; the support stud 13 is also provided with a locking nut 12; the lower end of the support stud 13 is supported on a bottom plate of the box body; the sealing bag 17 surrounds the shaft sleeve 19; the top of the sealing bag 17 is fixedly connected to the lower plane of the flange A19 b by an upper pressure plate 16; the bottom of the sealing bag 17 is fixedly connected to the bottom plate of the box body 10 by a lower pressing plate 18; the core of the shaft sleeve 19 is provided with a through shaft sleeve hole 19a which is circular in shape and simulates a culvert.
As shown in fig. 3 and 4, the end cover 25, the left positioning journal 2502 and the right positioning journal 2511 of the hydraulic cylinder 29 are respectively disposed at the left end and the right end of the end cover 25, the middle part of the end cover is stepped, the left side of the end cover is circular, the right side of the end cover is circular and inscribed with a square, that is, the left thrust surface 2501 of the end cover 25 is circular, the right thrust surface 2515 is square, and the left thrust surface and the right thrust surface are correspondingly provided with an annular B sealing groove 2505 and a C sealing groove 2508; the inner diameters of seal groove B2505 and seal groove C2508 are the same as the outer diameters of left and right stop journals 2502 and 2511, respectively, so as to facilitate the installation of seal ring B24 and seal ring C27, both seal ring B24 and seal ring C27 are O-rings; the hydraulic cylinder fixing holes 2514 are symmetrically arranged at four corners of the right thrust surface 2512 and are used for fixedly connecting the end cover 25 with the cylinder body of the hydraulic cylinder; four fixing holes 2506 are symmetrically arranged on the symmetry axis of the mounting surface 2513.
A piston rod guide hole 2504 is axially formed in the end cover 25; an E sealing groove 2503, a liquid collecting groove 2509 and an F sealing groove 2510 are sequentially arranged in the axial direction of the piston rod guide hole 2504 from left to right, an E sealing ring 26 and an F sealing ring 28 are respectively arranged in the E sealing groove 2503 and the F sealing groove 2510, and the E sealing ring 26 and the F sealing ring 28 are Y sealing rings for holes X Of o-rings, E-rings 26The opening direction is leftward for sealing the water pressure in the tank 10; the opening direction of the F sealing ring 28 is rightward, and the F sealing ring is used for sealing the oil pressure in the oil cylinder 29; on a square peripheral plane of a right thrust surface 2515 in the middle of the end cover 25, each surface is provided with a discharge hole 2507 communicated with the liquid collecting groove 2509, and the discharge holes 2507 are waist-shaped holes.
A liquid collecting tank 2509 for storing water leaking from the tank 10 through the E-packing 26 and oil leaking from the hydraulic cylinder 29 through the F-packing 28; in order to prevent the water in the box body 10 and the oil in the hydraulic cylinder 29 from communicating with each other after the liquid collecting tank 2509 is full, the end cover 25 is provided with the drain holes 2507, and the drain holes 2507 are respectively arranged on the front, back, left and right square side surfaces of the end cover 25 and used for draining the water or the oil leaked from the box body 10 or the hydraulic cylinder 29.
As shown in fig. 5, the water pressure control system comprises a water supply tank 61, a filter 62, a water pump 63, an unloading valve 64, a check valve 67 and an overflow valve 68, wherein the input end of the water pump 63 is connected with the water supply tank 61 through the filter 62, the output end of the water pump 63 is divided into two paths, one path of the output end of the water pump 63 is divided into the unloading valve 64 and the water supply tank 61, the other path of the output end of the water pump 63 is divided into the check valve 67, and the output end of the check valve 67 is respectively connected to a water pipe joint 8 at the left end of a tank 10, the control end (end a) of the unloading valve 64, a pressure gauge switch 66 and a pressure gauge 65; an overflow valve 68 is arranged on the right end face of the box body 10; an output end of the overflow valve 68 is connected to the water supply tank 61.
The working process of the hydraulic control system is as follows: passing the saline water in the water supply tank 61 through a filter 62, a water pump 63, a one-way valve 67, a water pipe joint 8 and a tank body 10; when the pressure in the box body 10 reaches the set value of the unloading valve 64, the outlet of the water pump 63 starts unloading work through the unloading valve 64, and the box body 10 maintains pressure through the one-way valve 67; when the pressure in the box body 10 is smaller than the closing value of the unloading valve 64, the unloading valve 64 is automatically closed, and the outlet of the water pump 63 continuously supplies water to the box body 10 through the one-way valve 67 and the water pipe joint 8.
In addition, the overflow valve 68 has a second function, and the first function and the unloading valve 64 are mutually backup and play a role of a safety valve, namely when the unloading valve 64 cannot unload, the overflow valve 68 automatically overflows, and vice versa, so that the safe operation of the system is ensured; the second is system simulation, when the overflow value set by the overflow valve 68 is smaller than the set value of the unloading valve 64, and the water pressure in the water tank 19 reaches the overflow value set by the overflow valve 68, the system will work in an overflow state, so that the pressure water in the tank can simulate the flow of natural groundwater in a pressure maintaining state.
Claims (7)
1. A concrete biased column load-bearing erosion test device comprises a water tank, a water pressure control system, a water pipe joint, an oil pressure control system and a hydraulic cylinder; the method is characterized in that: the water tank comprises a tank body and a tank cover; the box body is in a cuboid groove shape, the groove opening is upward, a flange is arranged on the groove opening, and a sealing gasket and a box cover are sequentially arranged on the flange; the flange is fixedly connected with the box cover; the box cover is provided with a mounting hole in the middle; the hydraulic cylinder is a single-piston-rod hydraulic cylinder, a piston rod penetrates through the mounting hole from the upper part of the box cover to enter the box body, and the hydraulic cylinder is fixed on the box cover in a sealing manner by utilizing a fixing hole on the end cover of the hydraulic cylinder; the box cover is also provided with a valve; the left end of the box body is provided with a transverse wall plate, a box body water inlet hole is formed in the middle close to the upper part, and a water pipe joint is arranged outside the box body water inlet hole; the water pipe joint is communicated with a water pressure control system;
a window hole is formed in the middle of a bottom plate of the box body, a shaft sleeve is arranged in the window hole, and the shaft sleeve is in clearance fit with the window hole; the flange A is arranged at the upper opening part of the shaft sleeve; the flange A is at least provided with three threaded holes which are uniformly distributed and run through the upper plane and the lower plane of the flange A in the radial middle part; the upper plane of the flange A is provided with a rubber sealing gasket; placing a concrete test component on the rubber sealing gasket; a supporting stud and a sealing bag are arranged between the lower plane of the flange A and the bottom plate of the box body from outside to inside; the upper end of the support stud is connected into the threaded hole; the support stud is also provided with a locking nut; the lower end of the support stud is supported on a bottom plate of the box body; the sealing bag surrounds the shaft sleeve; the top of the sealing bag is fixedly connected to the lower plane of the flange A by an upper pressure plate; the bottom of the sealing bag is fixedly connected to a bottom plate of the box body by a lower pressing plate;
the bottom of the box body is also provided with box legs; the oil pressure control system controls the movement and the pressure of a piston in the hydraulic cylinder; the lower end of the piston rod is movably connected with a pressing plate;
the water pressure control system comprises a water supply tank, a filter, a water pump, an unloading valve, a one-way valve and an overflow valve, wherein the input end of the water pump is connected with the water supply tank through the filter; the output end of the one-way valve is respectively connected with a water pipe joint at the left end of the box body, the A end of the control end of the unloading valve, and a pressure gauge switch to the pressure gauge; an overflow valve is arranged on the right end face of the box body; the output end of the overflow valve is connected to the water supply tank;
when the axis of the end cover of the hydraulic cylinder is horizontally placed, the left positioning journal and the right positioning journal are respectively arranged at the left end and the right end of the end cover, the journal matched with the mounting hole on the box cover is the left positioning journal, the right positioning journal matched with the cylinder sleeve hole of the hydraulic cylinder is the right positioning journal, the middle part of the end cover is step-shaped, the left side is circular, the right side is square, the side length of the end cover is less than or equal to that of an inscribed square of the left side circular, so that the left thrust surface of the end cover is circular and the right thrust surface of the end cover is square, and a sealing groove B and a sealing groove C are correspondingly arranged on the left thrust surface and the right thrust surface; a piston rod guide hole is axially formed in the end cover; an E sealing groove, a liquid collecting groove and an F sealing groove are sequentially arranged in the guide hole from left to right in the axial direction; and on the plane around the square in the middle of the end cover, the middle of each plane is provided with a drain hole communicated with the liquid collecting groove.
2. The concrete biased column load-bearing erosion test device according to claim 1, characterized in that: the water tank is made of metal.
3. The concrete bias column load-bearing erosion test device according to claim 1, characterized in that: the surface of the water tank is provided with a protective layer.
4. The concrete bias column load-bearing erosion test device according to claim 1, characterized in that: one end of the water pipe joint connected with the box body is a flange, and the other end of the water pipe joint is a round pipe with the outer part provided with anti-loosening teeth.
5. The concrete biased column load-bearing erosion test device according to claim 1, characterized in that: the sealing bag is a rubber corrugated air bag.
6. The concrete bias column load-bearing erosion test device according to claim 1, characterized in that: the lower end of the piston rod is provided with a hinge hole.
7. The concrete biased column load-bearing erosion test device according to claim 1, characterized in that: the piston rod is movably connected with the pressure plate in a hinged connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811416638.8A CN109507097B (en) | 2018-11-26 | 2018-11-26 | Load-holding erosion test device for concrete bias column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811416638.8A CN109507097B (en) | 2018-11-26 | 2018-11-26 | Load-holding erosion test device for concrete bias column |
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| CN109507097A CN109507097A (en) | 2019-03-22 |
| CN109507097B true CN109507097B (en) | 2022-08-19 |
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| CN201811416638.8A Active CN109507097B (en) | 2018-11-26 | 2018-11-26 | Load-holding erosion test device for concrete bias column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11821876B2 (en) * | 2021-04-02 | 2023-11-21 | Southeast University | Test method of medium transmission test device for concrete under temperature-osmotic pressure-load coupling effect |
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