Load-ion erosion-water level change multi-factor coupling test device

Abstract

The utility model provides a load-ion erosion-water level change multi-factor coupling test device which is characterized in that seawater is contained in a test box body, a plurality of steps are arranged at one end of the test box body, and seawater outlets are formed in the bottoms of the steps; the counter-force frame is positioned on the step of the test box body and is used for applying a load to the concrete test block so as to simulate concrete load in a marine environment; the wave maker is located at the end, away from the reaction frame, of the test box and connected with the wave making plate through a lifting rod, and the side, close to the reaction frame, of the wave making plate is an inclined face so that the lifting rod can drive the wave making plate to impact seawater in the longitudinal direction to simulate sea waves. A wave height meter and an ion concentration sensor which are positioned between the counter-force frame and the wave maker are arranged on the side wall of the test box body. The wave maker is arranged beside the test box body, so that waves can be made in the test box body to simulate a real ocean environment; the reaction frame is arranged in the test box body to apply load to the concrete test block so as to simulate the concrete load condition in the marine environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of submarine concrete test, and particularly relates to a load-ion erosion-water level fluctuation multi-factor coupling test device. BACKGROUND

[0002] With the rapid development of highway traffic construction in China, a large number of river-crossing and sea-crossing bridges have appeared, and this trend will continue to develop in a considerable long period of time in the future. As the bearing part of the bridge, the pier is directly related to the safe operation of the bridge, so the material performance of the pier, especially the fatigue performance, is very important. At present, the pier material is usually concrete and reinforced concrete, and the uniaxial fatigue performance or multi-axial fatigue performance of compression, torsion, direct shear and bending is mainly tested, but the performance parameters obtained in the laboratory do not take into account the influence of sea waves, especially in the sea-crossing bridge, the influence is more serious. In addition, the salt in seawater erodes the pier, which may cause safety hazards. The existing sea wave simulation generator is mostly fixed mode, which restricts the operability of the test parameters and limits the simulation range of the wave parameters, and cannot provide a more realistic sea wave environment.

[0003] Therefore, it is necessary to provide an improved technical scheme for the above-mentioned deficiencies of the prior art. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a load-ion erosion-water level fluctuation multi-factor coupling test device.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A load-ion erosion-water level fluctuation multi-factor coupling test device, comprising:

[0007] The test box body is filled with seawater, and a plurality of steps are arranged at one end of the test box body, and a seawater outlet is arranged at the bottom of the steps;

[0008] The counterforce frame is located on the steps of the test box body, and is used for applying load to the concrete test block to simulate the concrete under load in the marine environment;

[0009] The wave maker is located at one end of the test box body away from the counterforce frame, the wave maker is connected with the wave board through the lifting rod, and the side of the wave board close to the counterforce frame is an inclined surface, so as to drive the wave board to impact seawater along the longitudinal direction through the lifting rod to simulate sea waves;

[0010] The wave height meter and the ion concentration sensor are arranged on the side wall of the test box body between the counterforce frame and the wave maker.

[0011] Preferably, the counterforce frame, wave maker, wave height gauge and ion concentration sensor are correspondingly connected to the operation table, and the operation table is correspondingly connected with a display screen.

[0012] Preferably, the seawater outlet is provided with a water inlet end of a circulating water pump, and a water outlet end of the circulating water pump is connected to the middle of the test box body or an end far from the seawater outlet through a circulating water pipe.

[0013] Preferably, the test box body is externally provided with a gantry frame.

[0014] Preferably, the wave maker main body is located outside the test box body, the wave maker upper end is provided with an eave extending to above the test box body, a plurality of lifting rods are connected below the eave, and the wave board is connected below the lifting rods through a reverse L-shaped connecting seat.

[0015] Preferably, the wave board lower end is hinged to the lower end of the connecting seat, and the other end is connected to the middle of the connecting seat through an adjusting piece.

[0016] Beneficial effects: the circulating water pump is arranged to realize the circulating flow of seawater in the test box body; the wave maker is arranged beside the test box body to generate waves in the test box body to simulate the real marine environment; the counterforce frame is arranged in the test box body to apply load to the concrete test block to simulate the concrete loading condition in the marine environment. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application, serve to explain the present application, and do not constitute any improper limitation to the present application. Among them:

[0018] Fig. 1 The structure diagram of the test device in the specific embodiment provided by the present application is shown in the figure;

[0019] Fig. 2 The distribution diagram of the external gantry frame of the test device in the specific embodiment provided by the present application is shown in the figure;

[0020] Fig. 3 The structure diagram of the counterforce frame in the specific embodiment provided by the present application is shown in the figure.

[0021] In the figure: 1, box body; 2, counterforce frame; 3, ion concentration sensor; 4, wave height gauge; 5, gantry frame; 6, display screen; 7, operation table; 8, wave maker main body; 9, circulating water pump; 10, lifting rod; 11, connecting seat; 12, wave board; 21, base; 22, stand column; 23, extrusion plate; 24, sliding beam; 25, cross beam; 26, extrusion spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0023] In the description of the present application, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like is the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application, and does not require the present application to be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "connected", "connected" used in the present application should be broadly understood, for example, can be fixedly connected, can also be detachably connected; can be directly connected, can also be indirectly connected through an intermediate part. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] The present application will be described in detail below with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0025] As Figs. 1-3As shown, a load-ion erosion-water level change multi-factor coupling test device, comprising a test box 1, a counterforce frame 2, a wave maker, the test box 1 is a square box supported by metal or organic glass, the upper end is open, the test box 1 contains seawater, which is used to simulate the seawater environment of concrete, a plurality of steps are arranged at one end of the test box 1, specifically, the steps can be 4-6 levels, a seawater outlet is arranged at the bottom of the steps, which can be used for seawater replacement or simulation of real seawater flow, the counterforce frame 2 is located on the steps of the test box 1, and the counterforce frame 2 is used to apply load to the concrete test block, the counterforce frame 2 can move on different steps, so as to simulate the seawater erosion condition at different depths, so as to simulate the concrete under load in the marine environment, and the actual condition of seawater erosion is simulated, the wave maker is located at the end of the test box 1 away from the counterforce frame 2, the wave maker device is arranged beside the test box 1, and the seawater in the test box is waved, so that the seawater erosion condition is simulated, the wave maker is connected with a wave making plate 12 through a lifting rod 10, the lifting rod 10 is longitudinally telescopic, the wave making plate 12 impacts seawater downward to form waves, the side of the wave making plate 12 close to the counterforce frame 2 is an inclined surface, so that the wave making plate 12 impacts seawater longitudinally through the lifting rod 10 to simulate waves, and the inclined surface is inclined to the side of the counterforce frame 2, so that directional waves are generated through the inclined surface during the descending process of the wave making plate 12, and the seawater in the device is avoided from being chaotic, and a wave height gauge 4 and an ion concentration sensor 3 are arranged on the side wall of the test box 1 between the counterforce frame 2 and the wave maker, wherein the wave height gauge 4 is used for detecting wave height and monitoring the water level change in the test box 1 in real time, and the concentration sensor is used for monitoring the ion concentration in the seawater in the test box 1.

[0026] In an optional embodiment, the counterforce frame 2, the wave maker, the wave height gauge 4 and the ion concentration sensor 3 are correspondingly connected to an operation table 7, the operation table 7 is provided with control switches corresponding to the counterforce frame 2 and the wave maker, the control switches can control the load applied to the concrete and the wave size of the wave maker, and the operation table 7 is correspondingly connected with a display screen 6, so that various data parameters are displayed in real time.

[0027] A pc host or a plc controller is arranged in the operation table, so that the counterforce frame 2 and the wave maker are controlled.

[0028] In an optional embodiment, the seawater outlet is provided with a water inlet end of a circulating water pump 9, the seawater in the test box 1 is circulated through the circulating water pump 9, the test box 1 is connected in communication with the circulating water pump 9 through a circulating water pipe, and the water outlet end of the circulating water pump 9 is connected to the middle part of the test box 1 or the end away from the seawater outlet through the circulating water pipe, so that the seawater flow is simulated truly.

[0029] In an optional embodiment, the test box 1 is externally provided with a gantry 5, the gantry 5 can move the concrete test block and the counterforce frame 2 in the form of hoisting, and then can move on different steps to meet the experimental requirements of different depths.

[0030] In an optional embodiment, the wave maker body 8 is located outside the test box 1, the wave maker body 8 is seat-shaped, used for stably placing on the ground and keeping stability during wave making, a cornice extending to above the test box 1 is arranged at the upper end of the wave maker, the length of the cornice extending into the test box 1 is matched with the wave making plate 12 to meet the wave making requirement of the wave making plate 12, and a plurality of lifting rods 10 are connected below the cornice, the lifting rod 10 can be a hydraulic cylinder, and the wave making plate 12 is connected to the lifting rod 10 through the inverted L-shaped connecting seat 11 below the lifting rod 10.

[0031] The connecting seat 11 is fixed to the lifting rod 10 by welding, the lower edge of the wave making plate 12 is hinged to the lower edge of the connecting seat 11, and the other end is connected to the middle part of the connecting seat 11 through an adjusting piece.

[0032] In an optional embodiment, the connecting seat 11 can be a solid or hollow closed cavity, an arc-shaped surface corresponding to the upper edge of the wave making plate 12 is arranged on the lower surface of the side of the connecting seat 11 away from the hinged end, so that the fit between the wave making plate 12 and the connecting seat 11 during angle adjustment is ensured, and arc-shaped flaps corresponding to the two sides of the connecting seat 11 are arranged on the two sides of the wave making plate 12 and are folded away from the counterforce frame 2, so that the arc-shaped flaps can be tightly attached to the connecting seat 11, and the pouring of seawater between the connecting seat 11 and the wave making plate 12 is avoided to affect wave making.

[0033] Correspondingly, the adjusting rod can be a bolt, the arc-shaped flap is provided with a corresponding bolt, the two sides of the connecting seat 11 are provided with bolt holes corresponding to the arc-shaped flaps, and a plurality of bolt holes are uniformly distributed along an arc concentric with the hinge shaft of the wave making plate 12, so that the bolt on the arc-shaped flap can be adjusted in different bolt holes to meet the angle adjustment requirement.

[0034] In an optional embodiment, the counterforce frame 2 includes a base 21 and a stand 22, the base 21 is provided with the stand 22 on the two sides, the upper end of the stand 22 is provided with a cross beam 25, the base 21 is used for placing the concrete test block, and the cross beam 25 is provided with an extrusion plate 23 corresponding to the concrete test block in the middle part.

[0035] The two stands 22 are provided with a slidingly assembled sliding beam 24, the stand 22 is provided with an extrusion spring 26 corresponding to the sliding beam 24 and the cross beam 25, and the extrusion plate 23 is connected to the middle part of the sliding beam 24 through a hydraulic rod to provide extrusion force to the concrete block.

[0036] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall within the scope of protection of the present application.

Claims

1. A multi-factor coupled test device for load-ion erosion-water level variation, characterized in that, include: The test chamber is filled with seawater. At one end of the test chamber, there are multiple steps, and at the bottom of the steps, there is a seawater outlet. A reaction frame, located on the steps of the test chamber, is used to apply loads to the concrete test blocks to simulate the load on concrete in a marine environment. A wave generator is located at the end of the test chamber away from the reaction frame. The wave generator is connected to a wave-making plate via a lifting rod. The side of the wave-making plate closest to the reaction frame is inclined so that the lifting rod can drive the wave-making plate to impact seawater longitudinally to simulate ocean waves. A wave height meter and an ion concentration sensor are provided on the side wall of the test chamber, located between the reaction frame and the wave generator.

2. The load-ion erosion-water level change multi-factor coupled test device according to claim 1, characterized in that, The reaction frame, wave generator, wave height meter, and ion concentration sensor are connected to the operating table, which is also connected to a display screen.

3. The load-ion erosion-water level change multi-factor coupled test device according to claim 1, characterized in that, The seawater outlet is equipped with an inlet for a circulating water pump, and the outlet of the circulating water pump is connected to the middle of the test chamber or to the end away from the seawater outlet via a circulating water pipe.

4. The load-ion erosion-water level change multi-factor coupled test device according to claim 1, characterized in that, The test chamber is equipped with a gantry frame on its exterior.

5. The load-ion erosion-water level change multi-factor coupled test device according to claim 1, characterized in that, The main body of the wave generator is located outside the test chamber. The upper end of the wave generator is provided with an overhang extending upwards from the test chamber. Multiple lifting rods are connected below the overhang, and the wave generator plate is connected to the lower part of the lifting rods through an inverted L-shaped connecting seat.

6. The load-ion erosion-water level variation multi-factor coupled test device according to claim 5, characterized in that, The lower edge of the wave-generating plate is hinged to the lower edge of the connecting seat, and the other end is connected to the middle of the connecting seat through an adjusting member.

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