Device for detecting and maintaining bridge pile foundation

Abstract

The utility model provides a device for detecting and maintaining a bridge pile foundation, which comprises a main bin cage, the main bin cage comprises at least one sub-cage, a standard test piece and / or at least one maintenance test piece are / is accommodated in the sub-cage, and the standard test piece is a test piece manufactured according to a set standard mold. The maintenance test piece is a test piece which simulates the pile foundation in maintenance construction and has the same material, and the maintenance test piece is used for maintaining the pile foundation in the maintenance construction under the same condition and is detected according to different set time. According to the device for detecting and maintaining the bridge pile foundation, the real maintenance condition of the pile foundation under the same maintenance condition is simulated, the real maintenance state of the maintenance material of the pile foundation under the actual seawater environment can be timely and conveniently known by detecting and maintaining the test piece, whether the construction requirement is met or not is judged, and whether further maintenance or other measures need to be taken or not is decided.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a device for detecting and maintaining bridge pile foundations. Background Art

[0002] In recent years, the problem of pile foundation scour on bridges in waters has become increasingly serious, and the construction of underwater pile foundation anti-scour protection is also imminent. The conventional reinforcement method is to use riprap filling. However, this method is not only costly, but also causes secondary damage to the bridge pile foundation. The uneven surface of the gravel can also cause secondary scouring, resulting in poor protection. To this end, construction workers used a high-flow solidified soil with added curing agent to fill the underwater pile foundation scour pits (filling the pile foundation scour pits is called pile foundation maintenance). It can fit well with the underwater mud surface, forming a whole, achieving the best protection effect.

[0003] However, when highly fluid solidified soil is pumped into a bridge scour pit, the solidification process of the fluidized soil in the pit cannot be visually displayed. The existing technology lacks effective technical means to obtain the actual maintenance status of the pile foundation under the same conditions as the maintenance construction, so as to understand the construction quality and decide whether further maintenance or other measures are needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defect that the prior art cannot accurately know the construction quality of the bridge pile foundation, and to provide a device for detecting and maintaining the bridge pile foundation.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A device for inspecting and maintaining bridge pile foundations, used to inspect the quality of maintenance construction on bridge pile foundations, the device comprising a main cage, the main cage comprising at least one sub-cage, the sub-cage containing a standard specimen and / or at least one maintenance specimen, the standard specimen being a test specimen made according to a set standard mold, the maintenance specimen being a test specimen made of the same material as a pile foundation undergoing maintenance construction, the maintenance specimen being used to undergo maintenance under the same conditions as the pile foundation undergoing maintenance construction, and being inspected according to different set times.

[0007] In this scheme, by simulating the pile foundation under maintenance construction and maintenance specimens with the same material, the maintenance specimens are placed in a cage and then placed near the scouring pit of the bridge pile foundation under maintenance construction, thereby simulating the actual maintenance situation of the pile foundation under the same maintenance conditions ("maintenance under the same conditions" means that the maintenance specimens and the pile foundation under actual maintenance construction are under the same construction conditions. While pouring the pile foundation, the maintenance specimens are placed around the underwater pile foundation to ensure that they have the same application conditions as the pile foundation). The maintenance specimens are then taken out of the water at different set times. By testing the maintenance specimens, the actual maintenance status of the pile foundation maintenance materials in the actual seawater environment can be known in a timely and convenient manner (that is, the anti-scouring performance of the materials filling the pile foundation scouring pit under real seawater currents can be examined) to determine whether the construction requirements are met and to decide whether further maintenance or other measures are needed. The device places standard specimens and curing specimens tested at different set times in different sub-cages of the main cage (that is, different curing specimens are cured together with the pile foundation at different set times to simulate the damage of the scour pit near the pile foundation at different intervals). It can not only use standard specimens to test according to the set standard requirements, but also effectively simulate the curing quality after different use times through the curing specimens, and compare the curing specimens with the standard specimens to determine whether the pile foundation meets the curing construction requirements and decide whether further curing or other measures are needed.

[0008] Preferably, the main cage includes at least four sub-cages, and at least three of the sub-cages contain the curing specimens.

[0009] In this solution, by providing at least three sub-cages to accommodate the curing specimens, more curing specimen samples can be obtained to improve the accuracy of the test. The use of four sub-cages can make the main cage have a regular shape, which is convenient for construction.

[0010] Preferably, the curing specimen includes underwater original soil in the same working condition as the pile foundation under construction and solidified soil slurry cast on the underwater original soil and made of the same material as the pile foundation under curing construction.

[0011] In this scheme, through the above settings, the curing specimens accurately simulate the pile foundations undergoing curing construction, have the same material and application environment, and can compare the quality of pile foundations under the same curing conditions.

[0012] Preferably, the frame of the main cage and / or the sub-cage includes a plurality of keels arranged in different directions.

[0013] In this solution, the frame of the main cage and / or sub-cage is strengthened by keels arranged in different directions, so as to stably bear the maintenance specimens and standard specimens used for testing.

[0014] Preferably, a horizontal partition bar and / or a vertical partition bar are provided between two adjacent sub-cages.

[0015] In this solution, the sub-cages are separated by partition horizontal bars and / or partition vertical bars to ensure that the curing specimens or the standard specimens and the curing specimens do not interfere with each other during underwater applications, thereby ensuring the integrity of the specimens and improving the accuracy of the test.

[0016] Preferably, the main cage is provided with a fixing piece detachably connected to the partition cross bar and / or the partition vertical bar.

[0017] The fixing piece is connected to the standard specimen and the curing specimen;

[0018] Alternatively, the fixing member covers the surfaces of the standard specimen and the curing specimen, and the standard specimen and the curing specimen are placed in the inner cavity of the sub-cage.

[0019] In this solution, the standard specimens and the curing specimens can be effectively fixed by the fixing parts provided above, and will not become detached or deviate from the surrounding of the pile foundation when used underwater.

[0020] Preferably, the outer frame of the main cage is provided with a lifting lug, and / or the frame of the sub-cage is provided with a lifting lug.

[0021] In this solution, the main cage and / or sub-cage can be easily lifted by the lifting lugs to put them into or take them out of the water.

[0022] Preferably, the main cage further comprises a bottom frame, each sub-cage is placed on the bottom frame, and the bottom frame is further equipped with a counterweight.

[0023] In this solution, by installing counterweights on the bottom frame, the main cage can be easily fixed around the pile foundation and is not easy to change its position, ensuring that the curing specimen and the pile foundation have the same curing conditions.

[0024] Preferably, the frame of the sub-cage is detachably connected to the frame of the main cage.

[0025] In this solution, the frame of the sub-cage is detachably connected to the frame of the main cage, so that when one of the sub-cages is taken out, the other sub-cages do not need to be taken out, which facilitates the operation of taking out the specimens before testing and does not affect the specimens in other sub-cages to maintain a stable use state, making construction convenient.

[0026] Preferably, the sub-cage is not higher than the frame height of the main cage.

[0027] In this solution, the sub-cage is no higher than the frame height of the main cage, which is beneficial to the stability of the sub-cage in the main cage and will not detach. It is more stable when maintained under the same conditions underwater.

[0028] The positive progressive effect of the present invention is that the device for detecting and maintaining bridge pile foundations simulates the pile foundations under maintenance construction and has maintenance specimens of the same material, places the maintenance specimens in a cage, and then places them near the scouring pit of the bridge pile foundation under maintenance construction, simulating the actual maintenance conditions of the pile foundation under the same maintenance conditions, and then takes the maintenance specimens out of the water according to different set times. By detecting the maintenance specimens, the actual maintenance status of the pile foundation maintenance materials in the actual seawater environment can be timely and conveniently known to determine whether the construction requirements are met and whether further maintenance or other measures need to be taken. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic top view of the structure of a device for detecting and maintaining bridge pile foundations according to an embodiment of the utility model.

[0030] Figure 2 This is a schematic side view of the structure of the device for detecting and maintaining bridge pile foundations according to an embodiment of the utility model (wherein the sub-cage is placed into the main cage).

[0031] Figure 3 This is a schematic side view of the structure of the device for detecting and maintaining bridge pile foundations according to an embodiment of the utility model (wherein the sub-cage is being hoisted into the main cage).

[0032] Figure 4 This is a top view showing the structure of the main cage of an embodiment of the present utility model.

[0033] Figure 5 for Figure 4 Cross-sectional view along the AA direction.

[0034] Figure 6 This is a top view showing the structure of a sub-cage containing a curing specimen according to an embodiment of the present invention.

[0035] Description of reference numerals:

[0036] Main cage 1

[0037] Cage 2

[0038] First cage 21

[0039] Second subcage 22

[0040] The third cage 23

[0041] Fourth cage 24

[0042] Standard specimen 3

[0043] Curing specimen 4

[0044] Underwater original soil 41

[0045] Solidified soil slurry 42

[0046] Keel 5

[0047] Partition crossbar 6

[0048] Partition vertical rod 7

[0049] Lug 8

[0050] Bottom frame 9 DETAILED DESCRIPTION

[0051] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0052] Example 1

[0053] This embodiment provides a device for detecting and maintaining bridge pile foundations, which is used to detect the quality of maintenance construction on bridge pile foundations. Such pile foundations are pile foundations for building bridges or operating platforms on rivers and seas.

[0054] like Figure 1-3 As shown, the device includes a main cage 1, which includes at least one sub-cage 2. The sub-cage 2 contains a standard specimen 3 and / or at least one curing specimen 4. The standard specimen 3 is a test piece made according to a set standard mold. The curing specimen 4 is a test piece made of the same material as the pile foundation under curing construction. The curing specimen 4 is used to oxidize under the same conditions as the pile foundation under curing construction, and is tested according to different set times to obtain the construction quality of the pile foundation.

[0055] Specifically, in this embodiment, the main cage 1 includes four sub-cages, forming a four-grid curing cage. The entire cage is manufactured from ordinary steel sections, which is low-cost. The four sub-cages 2 are the first sub-cage 21 (also known as the standard specimen curing chamber) for accommodating the standard specimen 3, the second sub-cage 22, the third sub-cage 23, and the fourth sub-cage 24 (also known as the seabed simulation curing chamber) for accommodating the curing specimen 4. The standard specimen 3 is a standard specimen manufactured using a standard mold established by national standards. The second sub-cage 22, the third sub-cage 23, and the fourth sub-cage 24 each contain a curing specimen 4 and are cured in the same river and sea water conditions as the pile foundation undergoing curing construction at set intervals of 7 days, 28 days, and 60 days, respectively, to observe the scour resistance of the material used in the curing pile foundation under real seawater and ocean currents. In this embodiment, the material used in curing the pile foundation is highly fluid solidified soil. In other embodiments, the number of sub-cages 2 can be adjusted accordingly according to the needs of maintenance and testing, and the materials for maintaining the pile foundation can also be selected from other suitable materials according to actual effects; the maintenance interval time can also be adjusted as needed.

[0056] The device simulates the pile foundation under maintenance construction and a maintenance specimen 4 of the same material, places the maintenance specimen 4 in a cage, and then places it near the scouring pit of the bridge pile foundation under maintenance construction, simulating the actual maintenance situation of the pile foundation under the same conditions ("maintenance under the same conditions" means that the maintenance specimen 4 and the pile foundation under actual maintenance construction are under the same construction conditions. While pouring the pile foundation, the maintenance specimen 4 is placed around the underwater pile foundation to ensure that the same application conditions as the pile foundation are met). The maintenance specimen 4 is then taken out of the water according to different set times. By testing the maintenance specimen 4, the actual maintenance status of the high-fluidity solidified soil in the actual seawater environment can be known in a timely and convenient manner (that is, the anti-scouring performance of the high-fluidity solidified soil filled in the pile foundation scouring pit under real seawater currents can be examined) to determine whether the construction requirements are met and to decide whether further maintenance or other measures are needed). The device places standard specimens 3 and curing specimens 4 tested at different set times in different sub-cages 2 of the main cage 1 (that is, different curing specimens 4 are cured together with the pile foundation at different set times to simulate the damage of the scour pit near the pile foundation at different time intervals). It can not only use the standard specimens 3 to test according to the set standard requirements, but also use the curing specimens 4 to effectively simulate the curing quality after different use times to determine whether the pile foundation meets the construction requirements and decide whether further curing or other measures are needed.

[0057] In this embodiment, at least three sub-cages contain the curing specimens 4, which can provide more curing specimens 4 and improve the accuracy of the test. The use of four sub-cages 2 can make the main cage 1 have a regular shape, which is convenient for construction.

[0058] Among them, such as Figure 3 As shown, curing specimen 4 consists of untouched underwater soil 41, constructed under the same conditions as the pile foundation under construction, and solidified soil slurry 42, cast atop untouched underwater soil 41 and made of the same material as the pile foundation under curing and filling. This material configuration accurately simulates the curing pile foundation under construction, sharing the same material and application environment, enabling comparison of the quality of pile foundations under the same curing conditions.

[0059] Among them, such as Figure 4-6 As shown, the frames of the main cage 1 and the sub-cage 2 include several keels 5 arranged in different directions, which enhance the strength of the frame and stably carry the maintenance specimens 4 and standard specimens 3 used for testing.

[0060] Among them, a horizontal partition bar 6 and a vertical partition bar 7 are provided between two adjacent sub-cages 2. The partition bar 6 and the partition bar 7 are used to separate the sub-cages 2 to ensure that the curing specimens 4 or the standard specimens 3 and the curing specimens 4 do not interfere with each other during underwater use, thereby ensuring the integrity of the specimens and improving the accuracy of the detection.

[0061] like Figure 4 As shown, the main cage 1 is provided with fixings that are detachably connected to the partition cross bars 6 and / or partition vertical bars 7. In this embodiment, the fixings are specifically steel mesh covering the surfaces of the standard specimen 3 and the curing specimen 4. The steel mesh holds the standard specimen 3 and the curing specimen 4 in the inner cavity of the sub-cage 2. This effectively secures the standard specimen 3 and the curing specimen 4 and prevents them from becoming detached or shifting around the pile foundation during underwater use.

[0062] In other embodiments, the fixing member has various forms, such as a chain or a rope, one end of the chain is directly connected to the standard specimen 3 and the curing specimen 4, and the other end is detachably fixed to the frame of the sub-cage 2.

[0063] like Figure 3 As shown, the outer frame of the main cage 1 is provided with a lifting lug 8, and / or the frame of the sub-cage 2 is provided with a lifting lug 8. The lifting lug 8 facilitates the lifting of the main cage 1 and / or the sub-cage 2 to be placed in or taken out of the water.

[0064] Among them, such as Figure 3 As shown, the main cage 1 also includes a bottom frame 9, on which each sub-cage 2 is mounted. The bottom frame 9 is also equipped with a counterweight (not shown). By installing the counterweight on the bottom frame 9, the main cage 1 can be easily fixed around the pile foundation, making it difficult to change its position, ensuring that the curing conditions of the curing specimen 4 and the pile foundation are the same.

[0065] like Figure 6 As shown, in this embodiment, the frame edge of the sub-cage 2 is provided with a sliding structure, which enables the sub-cage 2 to be detachably connected to the frame of the main cage 1. The detachable connection between the frame of the sub-cage 2 and the frame of the main cage 1 allows one sub-cage 2 to be removed without removing the other sub-cages 2, facilitating the removal of specimens before testing while maintaining the stability of the specimens in the other sub-cages 2.

[0066] Among them, the sub-cage 2 is not higher than the frame height of the main cage 1, which is beneficial to the stability of the sub-cage 2 in the main cage 1 and will not fall away. It is more stable when maintained under the same conditions underwater.

[0067] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A device for detecting and maintaining bridge pile foundations, used to detect the quality of pile foundation maintenance construction, characterized in that: The device includes a main cage, which includes at least one sub-cage. The sub-cage contains a standard test piece and / or at least one curing test piece. The standard test piece is a test piece made according to a set standard mold. The curing test piece is a test piece made of the same material as the pile foundation under curing construction. The curing test piece is used to perform curing under the same conditions as the pile foundation under curing construction and is tested according to different set time periods. The frame of the main cage and / or the sub-cage includes a plurality of keels arranged in different directions; The frame edge of the sub-cage is provided with a sliding structure so that the frame of the sub-cage can be detachably connected to the frame of the main cage, and the sub-cage is not higher than the frame height of the main cage.

2. The device for detecting and maintaining bridge pile foundations according to claim 1, characterized in that: The main cage includes at least four sub-cages, and at least three of the sub-cages contain the curing specimens.

3. The device for detecting and maintaining bridge pile foundations according to claim 1, characterized in that: The curing specimen includes underwater original soil in the same working condition as the pile foundation under construction and solidified soil slurry poured on the underwater original soil and having the same material as the pile foundation under curing construction.

4. The device for detecting and maintaining bridge pile foundations according to claim 1, characterized in that: A horizontal partition bar and / or a vertical partition bar are provided between two adjacent sub-cages.

5. The device for detecting and maintaining bridge pile foundations according to claim 4, characterized in that: The main cage is provided with a fixing piece detachably connected to the partition cross bar and / or the partition vertical bar. The fixing piece is connected to the standard specimen and the curing specimen; Alternatively, the fixing member covers the surfaces of the standard specimen and the curing specimen, and the standard specimen and the curing specimen are placed in the inner cavity of the sub-cage.

6. The device for detecting and maintaining bridge pile foundations according to claim 1, characterized in that: The outer frame of the main cage is provided with a lifting lug, and / or the frame of the sub-cage is provided with a lifting lug.

7. The device for detecting and maintaining bridge pile foundations according to claim 1, characterized in that: The main cage also includes a bottom frame, each sub-cage is placed on the bottom frame, and the bottom frame is also equipped with a counterweight.

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