Static load test device for overwater engineering

Abstract

The utility model provides a static load test device for overwater engineering, which comprises a stack-loading water tank and an umbrella-shaped force transmission frame, and the stack-loading water tank is closed and is used for containing water; the umbrella-shaped force transmission frame comprises a vertical main beam, the vertical main beam is located in the middle of the stack-loading water tank, the bottom of the vertical main beam penetrates out of the stack-loading water tank and is in sealing fit with the stack-loading water tank, and the bottom of the vertical main beam is used for being placed on a pile head; a plurality of connecting parts are arranged on the periphery of the top of the vertical main beam, one end of each connecting part is connected with the top of the vertical main beam, and the other end of each connecting part is connected with the periphery of the bottom of the stack-loading water tank and used for providing pulling force for the periphery of the stack-loading water tank. According to the utility model, the weight of the stacking water tank is increased by filling water into the stacking water tank, so that the transportation and installation of concrete blocks are avoided; the device is simple in structure, reliable in test result, convenient in material taking, recyclable, clean, environment-friendly and capable of being filled with the stacked objects quickly, and water is used as the stacked objects.

Description

TECHNICAL FIELD

[0001] The utility model relates to static load test technical field, concretely relates to a static load test device for waterborne engineering. BACKGROUND

[0002] The statements herein only provide background technology related to the utility model and do not necessarily constitute prior art.

[0003] China has numerous rivers and lakes, and in recent years, with the rapid development of transportation, a large number of bridge projects have been built. In bridge engineering, the quality of pile foundation engineering is crucial to the entire project and is directly related to the safety of the building. Since pile foundation engineering is a concealed project, pile foundation detection is an important link to ensure the quality and safety of pile foundation engineering.

[0004] The most widely used bearing capacity detection method in pile foundation engineering at present is static load test, which is a good pile foundation detection method with intuitive principle and reliable results. In the existing technical scheme, a test system composed of loading reaction device, load measuring device and settlement measuring device is generally used. During the test, the loading reaction device is used to apply vertical pressure step by step on the top of the pile, and the settlement displacement of the pile top with time is observed to determine the corresponding single pile vertical compressive bearing capacity. The commonly used loading reaction device is a heavy platform reaction device, which uses standard weight blocks for stacking. The size of the standard weight block is a cuboid of 6000mmx500mmx600mm, which is made of reinforced concrete, with a volume of 1.8 cubic meters and a mass of about 4.5 tons. During the field test, the jack, main beam and pile cap plate need to be placed in advance, and then the weight block is hoisted and placed on the pile cap plate.

[0005] In land engineering, the existing technical scheme is mature enough to meet the detection needs. However, with the increasing number of waterborne engineering in recent years, the transportation and installation of concrete blocks are extremely inconvenient, and some local areas even completely lack the conditions for on-site static load test. The limitations of the original test method are becoming more and more prominent, and the problem of bearing capacity detection of waterborne pile foundation engineering needs to be solved urgently. UTILITY MODEL CONTENT

[0006] To solve the problems mentioned in the background technology, the utility model provides a static load test device for waterborne engineering.

[0007] To achieve the above object, the technical scheme of the utility model is as follows: a static load test device for water engineering, comprising a stack water tank and an umbrella-shaped force transmission frame, the stack water tank is closed and used for containing water, the umbrella-shaped force transmission frame comprises a vertical main beam, the vertical main beam is located at the middle part of the stack water tank, the bottom of the vertical main beam penetrates through the stack water tank and is in sealing cooperation with the stack water tank, the bottom of the vertical main beam is used for being placed on a pile head, and the bottom of the main beam is in contact with the pile head surface, a plurality of connecting components are arranged around the top of the vertical main beam, one end of the connecting component is connected with the top of the vertical main beam, and the other end is connected with the bottom of the stack water tank, and the connecting component is used for providing a pulling force for the periphery of the stack water tank.

[0008] Further, the middle part of the connecting component is provided with a tensioning component, and the connecting component is tensioned through the tensioning component.

[0009] Further, the periphery of the stack water tank is provided with a cofferdam, and the periphery of the stack water tank is attached to the side wall of the cofferdam.

[0010] Further, the stack water tank is a spliced combined water tank, which is spliced and combined by a plurality of prefabricated plates, and the vertical main beam and the connecting component are detachably connected with the stack water tank.

[0011] Further, the utility model further comprises a load sensor, the load sensor is arranged between the vertical main beam and the pile head, and is used for measuring the load applied on the pile head.

[0012] Further, the utility model further comprises water inlet pipes and water outlet pipes arranged on both sides of the stack water tank, and water pumps and control valves are arranged on the water inlet pipes and the water outlet pipes.

[0013] Further, the top of the stack water tank is closed.

[0014] The utility model has the advantages of:

[0015] 1. The utility model discloses a method for increasing the weight of the stack water tank by pouring water into the stack water tank, thereby avoiding the transportation and installation of concrete blocks, and the structure is simple, the test result is reliable, the water is used as the stacking object, the water is convenient to obtain and can be recycled, the water is clean and environmentally friendly, the stacking object can be filled quickly, the cost is low, the construction is fast, and the utility model can be applied to the bearing capacity test of the water pile foundation engineering.

[0016] 2. In the utility model, the umbrella-shaped force transmission frame is arranged, the stack water tank is prevented from being damaged, and the pressure is better concentrated on the pile head, the vertical main beam is in contact with the pile head instead of the stack water tank being directly in contact with the pile head, and the stack water tank is prevented from being damaged due to stress concentration. DRAWINGS

[0017] In the drawings:

[0018] Figure 1 The utility model discloses a static load test device for water project structural schematic diagram.

[0019] Mark explanation:

[0020] 1, the water tank of heaping load;

[0021] 2, umbrella-shaped force transmission frame;21, vertical main beam;22, connecting part;

[0022] 3, inlet pipe;

[0023] 4, outlet pipe. Specific implementation

[0024] The utility model will make further detailed explanation in combination with the drawings and embodiment, obviously, the described embodiment is only a part embodiment of the utility model, not all the embodiment.In the case where there is no conflict, the embodiment in this application and the feature in the embodiment can be combined each other.Based on the embodiment in the utility model, all other embodiments that the ordinary skill in the art obtains without making the creative labor all belong to the range of the utility model protection.

[0025] See Figure 1 .

[0026] The utility model discloses a static load test device for water project, including the water tank of heaping load 1 and umbrella-shaped force transmission frame 2, this water tank of heaping load 1 is four around airtight, is used for containing water;The umbrella-shaped force transmission frame 2 includes vertical main beam 21, and the vertical main beam 21 is located in the middle part of heaping load water tank 1, and the bottom of vertical main beam 21 passes out heaping load water tank 1 and is sealed with heaping load water tank 1 cooperation, and the bottom of vertical main beam 21 is used to place on the pile head, and the bottom of main beam and the pile head face contact, to improve the stability when vertical main beam 21 and the pile head contact, the top of vertical main beam 21 all around evenly is provided with a plurality of connecting parts 22, and one end of connecting part 22 is connected with the top of vertical main beam 21, and the other end is connected with the bottom all around of heaping load water tank 1, is used to provide the pulling force for the bottom all around of heaping load water tank 1.

[0027] Compared with the prior art, the stack water tank 1 is used to replace the existing concrete counterweight, and other displacement measurement parts directly use the original displacement measurement system. In operation, the vertical main beam 21 of the umbrella-shaped force transmission frame 2 is placed on the pile head, and then the connecting parts 22 are sequentially connected to the bottom of the four sides of the stack water tank 1. Since the area of the pile head is small, most of the four sides of the stack water tank 1 are in a suspended state. Therefore, the setting of the umbrella-shaped force transmission frame 2 not only avoids damage to the stack water tank 1, but also better concentrates the pressure on the pile head. By making the vertical main beam 21 in contact with the pile head instead of the stack water tank 1 directly contacting the pile head, damage to the stack water tank 1 due to stress concentration is avoided.

[0028] In operation, water is poured into the stack water tank 1 to increase the weight of the stack water tank 1. The loading weight is controlled by controlling the amount of water in the water tank, which eliminates the transportation and installation of concrete blocks, uses local materials, has low cost, fast construction, and can be applied to the bearing capacity test of the pile foundation engineering on water.

[0029] In an embodiment, the middle part of the connecting part 22 is provided with a tensioning part (not shown in the figure), which is used to tension the connecting part 22. This design can avoid large deformation of the suspended part of the stack water tank 1 due to the deformation allowance of the connecting part 22, thereby preventing damage to the stack water tank 1.

[0030] Preferably, the tensioning part is a flower basket screw.

[0031] Preferably, the connecting part 22 can be a connecting rod or a connecting rope.

[0032] In an embodiment, the stack water tank 1 has a cofferdam around its periphery. The cross section of the stack water tank 1 matches the cross section of the space enclosed by the cofferdam, and the periphery of the stack water tank 1 abuts against the side wall of the cofferdam.

[0033] In a specific implementation, during the construction of the pile foundation engineering on water, a space around the pile is enclosed by a cofferdam, and then the water in the space is drained for internal pile foundation construction. The present application uses the cofferdam to support the periphery of the stack water tank 1 to improve the stability of the stack water tank 1 and prevent side tilting.

[0034] It can be understood that in order to improve the stability of the stack water tank 1, the stack water tank 1 can also be supported from the side by using supports and other easily thought of ways.

[0035] In an embodiment, the stack water tank 1 is a combined water tank, which is combined by a plurality of prefabricated plates. The vertical main beam 21 and the connecting part 22 are detachably connected with the stack water tank 1. In this way, the stack water tank 1 is convenient to transport and store, and the stack water tank 1 is combined to match the shape of the space enclosed by the cofferdam. In addition, the combined water tank is a prior art, and thus the specific structure is not described in detail.

[0036] In an embodiment, a load sensor (not shown in the figure) is arranged between the vertical main beam 21 and the pile head, and is used to measure the load applied to the pile head.

[0037] Of course, if the stack water tank 1 is of a standard size, a water level line can be arranged inside the stack water tank 1. Since the weight, internal volume and density of water of the stack water tank 1 are determined, the load applied to the pile head can be known through the water level line.

[0038] In an embodiment, water inlet pipes 3 and water outlet pipes 4 are arranged on both sides of the stack water tank 1, and water pumps and control valves are arranged on the water inlet pipes 3 and the water outlet pipes 4. Water is filled into the stack water tank 1 through the water inlet pipes 3 and water is discharged from the stack water tank 1 through the water outlet pipes 4, so as to control the water quantity in the water tank and further control the loading weight.

[0039] In an embodiment, the top of the stack water tank 1 is closed, so as to reduce the evaporation.

[0040] In the formal test, a reference beam is erected near the pile head, and a displacement sensor is fixed on the reference beam (i.e. a displacement measurement system, which is a prior art and is not described in detail). Meanwhile, load sensors are arranged on the top surface of the pile head. After the erection is completed, the umbrella-shaped force transmission frame 2 and the stack water tank 1 are assembled. The vertical main beam 21 of the umbrella-shaped force transmission frame 2 is placed on the pile head, and then the connecting parts 22 and the bottom plate of the stack water tank 1 are assembled in sequence. Finally, the side plates of the stack water tank 1 and the water pump are assembled, and the components are assembled through bolts. After the stack water tank 1 is assembled, airtightness test is performed, and the test can be started after the requirement is met.

[0041] In the test, water is injected into the stack water tank 1 through the water inlet pipes 3 by using the water pump, and the water quantity is controlled through the load sensor. When the first level load is reached, the water injection is stopped, and then the water is injected in stages according to the requirements of the slow load method. When unloading, water is pumped out from the stack water tank 1 through the water outlet pipes 4 by using the water pump, and the unloading is performed in stages. The unloading quantity of each stage is twice the loading quantity of each stage, and the loading is equal in each stage. In the test process, the displacement corresponding to each loading and unloading is recorded by the displacement sensor. After the test is completed, the stack water tank 1 and the umbrella-shaped force transmission frame 2 are removed.

[0042] 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 be included in the protection scope of the present application.

[0043] It should be noted that if the present application embodiments involve directional indications (such as up and down), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0044] In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, if the present application embodiments involve "first", "second", etc. description, the "first", "second", etc. description is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, "multiple" means two or more. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the present application.

Claims

1. A static load testing device for a water-based project, characterized by, The utility model provides a water storage tank and umbrella-shaped force transmission frame, the water storage tank (1) is closed around and is used for containing water, the umbrella-shaped force transmission frame (2) includes vertical main beam (21), the vertical main beam (21) is located in the middle of water storage tank (1), the bottom of vertical main beam (21) penetrates water storage tank (1) and is sealedly matched with water storage tank (1), and the bottom of vertical main beam (21) is used to place on the pile head, the top of vertical main beam (21) is provided with a plurality of connecting components (22) around, one end of connecting component (22) is connected with the top of vertical main beam (21), and the other end is connected with the bottom around water storage tank (1), and connecting component (22) is used to provide the pulling force for the four around of water storage tank (1).

2. The static load testing device for a water engineering work according to claim 1, wherein The middle part of the connecting component (22) is provided with a tensioning component, which is used to tension the connecting component (22).

3. The static load test apparatus for a water work according to claim 1 or 2, characterized by, The water storage tank (1) is provided with a cofferdam around, and the side wall of the cofferdam is attached to the water storage tank (1).

4. The static load testing device for a water work according to claim 1 or 2, wherein The water storage tank (1) is a combined water tank, which is assembled by a plurality of prefabricated plates, and the vertical main beam (21) and the connecting component (22) are detachably connected with the water storage tank (1).

5. The static load testing device for a water work according to claim 1 or 2, wherein The utility model also comprises a load sensor, which is arranged between the vertical main beam (21) and the pile head, and is used to measure the load applied on the pile head.

6. The static load test apparatus for a water work according to claim 1 or 2, wherein The utility model also comprises an inlet pipe (3) and an outlet pipe (4) arranged on both sides of the water storage tank (1), and a water pump and a control valve are arranged on the inlet pipe (3) and the outlet pipe (4).

7. The static load test apparatus for a water work according to claim 1 or 2, wherein The top of the water storage tank (1) is closed.

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