CN109811808B

CN109811808B - Measuring instrument for low-strain detection of foundation pile and field supervision system

Info

Publication number: CN109811808B
Application number: CN201910123857.5A
Authority: CN
Inventors: 唐丙贵; 李舜; 杨人禄; 李刚; 吴振福
Original assignee: WUHAN ROCKSEA ENGINEERING TECHNOLOGY CO LTD
Current assignee: WUHAN ROCKSEA ENGINEERING TECHNOLOGY CO LTD
Priority date: 2019-02-19
Filing date: 2019-02-19
Publication date: 2021-04-23
Anticipated expiration: 2039-02-19
Also published as: CN109811808A

Abstract

The invention discloses a measuring instrument and an on-site supervision system for low-strain detection of foundation piles, which comprise a testing hammer, a plurality of impact pipes and a supervision system, wherein the surface of the testing hammer is in sliding connection with the inner surface of the impact pipe, the top of the testing hammer is in threaded connection with a metal piston, the number of the impact pipes is multiple, and the outer surfaces of the impact pipes are all sleeved with semicircular magnetic sleeves. This a measuring instrument and on-site supervision system for foundation pile low strain detection, through setting up the track of strikeing the pipe as metal piston and test hammer, utilize the semicircle magnetic sleeve with metal piston and test hammer absorption back, utilize aeration machine and aeration pipe cooperation, the impact force in the twinkling of an eye can provide thrust for metal piston and test hammer, make the more powerful impact foundation pile of test hammer, utilize the aeration machine to provide power, the fatigue of artifical striking has been saved, and set up multiunit and strike pipe and test hammer, can carry out the multiple spot and detect, high durability and convenient use.

Description

Measuring instrument for low-strain detection of foundation pile and field supervision system

Technical Field

The invention relates to the technical field of engineering detection devices, in particular to a measuring instrument and an on-site supervision system for low strain detection of a foundation pile.

Background

Engineering detection is an important work for testing foundations, building materials, construction processes and building structures related to buildings in the whole construction process in order to guarantee the safety of the constructed, under-construction and to-be-constructed building engineering. The foundation structure detection research institute comprises foundation pit monitoring, pile foundation detection and other foundation basic engineering. Specific pile foundation detection (high strain, low strain, core drilling detection and static load test), foundation pit monitoring, foundation pit support and the like. And (5) detecting the quality of the pile foundation engineering. The construction of the cast-in-place pile is divided into two parts of hole forming and pile forming, so that the detection of the pile foundation can be divided into two parts of hole forming quality detection and pile forming quality detection. The hole forming is the first link in the construction of the cast-in-place pile. The hole forming operation is finished underground or underwater, the quality control difficulty is high, and the problems of hole collapse, hole shrinkage, pile hole deflection, excessive sediment and the like can be caused by complicated geological conditions or errors in construction. Pile quality detection can be divided into bearing capacity detection and integrity detection.

When pile foundation engineering quality detects, often adopt the low strain detection mode of foundation pile to detect foundation pile body structural integrity in the pile foundation. The existing detection mode is that a detection hammer is adopted to knock a foundation pile, the fluctuation of the foundation pile is detected through an instrument to judge the quality, but the manual knocking of the foundation pile needs larger force, the received anti-vibration force is also larger, the workers can be tired under the condition of more foundation piles, the manual knocking force can be weakened, and the detected data is unstable.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a measuring instrument and a field supervision system for low strain detection of a foundation pile, and solves the problems that a large force is required for manually knocking the foundation pile, the received anti-seismic force is also large, workers are very tired under the condition of more foundation piles, the manual knocking force is weakened, and the detected data is unstable.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a measuring instrument for foundation pile low-strain detection and an on-site supervision system comprise a testing hammer, a plurality of impact pipes and a supervision system, wherein the surface of the testing hammer is in sliding connection with the inner surface of the impact pipes, the top of the testing hammer is in threaded connection with a metal piston, the impact pipes are provided with a plurality of semicircular magnetic sleeves, the outer surfaces of the impact pipes are sleeved with semicircular magnetic sleeves, the semicircular magnetic sleeves are fixedly connected through a connecting plate, the semicircular magnetic sleeves are clamped with the impact pipes through bolts, pin holes matched with the bolts are formed in the surfaces of the impact pipes, the top ends of the impact pipes are clamped with sealing plugs, the tops of the sealing plugs are communicated with an aeration pipe, one end of the aeration pipe is communicated with an aerator, the outer surface of the bottom end of the impact pipe is fixedly connected with a base through a flange, a low-strain foundation pile dynamic measuring instrument penetrates through the middle of the top of the base, a pressing sleeve is fixedly connected to the middle of the top of the base and positioned outside of the, the surface of low foundation pile dynamometry appearance that meets an emergency just is located the top fixedly connected with clamping ring of base, and fixedly connected with spring between the top of clamping ring and the top of pressing the cover internal surface, the top of pressing the cover is through supporting a cover fixedly connected with installation section of thick bamboo, and the fixed surface of installation section of thick bamboo is connected with speed detector.

Preferably, the speed detector is provided with a plurality of, the surface of low strain foundation pile electrometer and speed detector all has the processor through wire electric connection.

Preferably, a threaded sleeve is in threaded connection between the outer surfaces of the two impact pipes close to one end, and the outer surfaces of the multiple impact pipes are fixedly connected through a connecting plate.

Preferably, the impact tube is far away from one side fixedly connected with plug bush of semicircle magnetic sleeve, the outside cover of plug bush is equipped with the fixed disk, and the fixture block of the surperficial looks joint with the plug bush is seted up to the internal surface of fixed disk.

Preferably, the supervision system comprises a central server and a sub-server, the sub-server comprises a wireless signal transmitting module, and the central server comprises a wireless signal receiving module, a central processing assembly and a display screen.

Preferably, the output ends of the speed detector and the low-strain foundation pile dynamic measuring instrument are both connected with the input end of a processor, and the output end of the processor is connected with the input end of an aerator.

Preferably, the output end of the processor is connected with the input end of the wireless signal transmitting module, and the output end of the wireless signal transmitting module is connected with the input end of the wireless signal receiving module through a wireless signal.

Preferably, the output end of the wireless signal receiving module is connected with the input end of the central processing component, and the output end of the central processing component is connected with the input end of the display screen.

(III) advantageous effects

The invention provides a measuring instrument for low-strain detection of a foundation pile and an on-site supervision system. Compared with the prior art, the method has the following beneficial effects:

(1) the measuring instrument and the on-site supervision system for the foundation pile low strain detection are characterized in that the surface of a testing hammer is connected with the inner surface of an impact pipe in a sliding manner, a metal piston is connected with the top of the testing hammer in a threaded manner, the impact pipe is provided with a plurality of impact pipes, the outer surfaces of the impact pipes are respectively sleeved with a semicircular magnetic sleeve, the semicircular magnetic sleeves are fixedly connected with each other through a connecting plate, the semicircular magnetic sleeves are clamped with the impact pipes through bolts, pin holes matched with the bolts are formed in the surface of the impact pipes, sealing plugs are clamped at the top ends of the impact pipes, the top parts of the sealing plugs are communicated with an aeration pipe, one end of the aeration pipe is communicated with an aerator, the impact pipe is arranged as a track of the metal piston and the testing hammer, after the metal piston and the testing hammer are adsorbed by the semicircular magnetic sleeves, the aerator is matched with the aeration pipe, and the instant impact force can provide, make the more powerful impact foundation pile of test hammer, utilize the aeration machine to provide power, saved the fatigue that the manual work was strikeed, and set up multiunit and strike pipe and test hammer, can carry out multiple spot and detect convenient to use.

(2) The measuring instrument and the on-site supervision system for the foundation pile low-strain detection are characterized in that a base is fixedly connected to the outer surface of the bottom end of an impact pipe through a flange, a low-strain foundation pile dynamic measuring instrument penetrates through the middle of the top of the base, a pressing sleeve is fixedly connected to the middle of the top of the base and positioned outside the low-strain foundation pile dynamic measuring instrument, a pressing ring is fixedly connected to the surface of the low-strain foundation pile dynamic measuring instrument and positioned at the top of the base, and a spring is fixedly connected between the top of the compression ring and the top of the inner surface of the pressure sleeve, the top of the pressure sleeve is fixedly connected with an installation cylinder through a support sleeve, the surface of the mounting cylinder is fixedly connected with a speed detector, the low-strain foundation pile dynamic measuring instrument can be tightly pressed on the surface of the foundation pile by utilizing the matching of the spring, the pressure ring and the pressure sleeve, the fluctuation can be more accurately detected, meanwhile, the speed detector is arranged to detect the falling instantaneous speed of the test hammer, so that the detection precision is improved.

(3) This a measuring instrument and on-site supervision system for foundation pile low strain detection, there is the thread bush through threaded connection between two impact tubes are close to the surface of one end mutually, through connecting plate fixed connection between a plurality of impact tubes's the surface, impact one side fixedly connected with plug bush that the semicircle magnetic housing was kept away from to the pipe, plug bush's outside cover is equipped with the fixed disk, and the internal surface of fixed disk set up with plug bush's the fixture block of surface looks joint, impact the pipe and divide into about two sets of, connect through the thread bush between, and through plug bush between six impact tubes in every group, the fixed disk is connected with the fixture block cooperation, it is comparatively convenient to install and dismantle between each structure, can install on the spot, also be convenient for transport, high durability and convenient use.

(4) The output ends of the speed detector and the low-strain foundation pile dynamic measuring instrument are connected with the input end of the processor, the output end of the processor is connected with the input end of the aerator, the output end of the processor is connected with the input end of the wireless signal transmitting module, the output end of the wireless signal transmitting module is connected with the input end of the wireless signal receiving module through a wireless signal, the output end of the wireless signal receiving module is connected with the input end of the central processing module, the output end of the central processing module is connected with the input end of the display screen, the detecting equipment is divided into a plurality of groups, each group is a sub-server, the wireless signal transmitting module and the wireless signal receiving module are matched to wirelessly transmit the detected data to the central server for processing, and the detected data of the whole construction site are conveniently arranged, is favorable for monitoring the construction state and is convenient to use.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a top view of the structure of the present invention;

FIG. 3 is a cross-sectional view of an impingement tube structure of the present invention;

FIG. 4 is a side view of an impact structure of the present invention;

FIG. 5 is a schematic view of the installation structure of the low-strain foundation pile dynamic measuring instrument and the speed detector of the invention;

FIG. 6 is a top view of the base structure of the present invention;

fig. 7 is a schematic block diagram of the system of the present invention.

In the figure, 1-test hammer, 2-impact tube, 3-supervision system, 31-central server, 32-sub server, 33-wireless signal transmitting module, 34-wireless signal receiving module, 35-central processing module, 36-display screen, 4-metal piston, 5-semicircle magnetic sleeve, 6-bolt, 7-sealing plug, 8-aeration tube, 9-aerator, 10-base, 11-low strain foundation pile dynamic measuring instrument, 12-pressing sleeve, 13-pressing ring, 14-spring, 15-supporting sleeve, 16-mounting cylinder, 17-speed detector, 18-processor, 19-thread sleeve, 20-inserting sleeve, 21-fixing disk and 22-clamping block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, an embodiment of the present invention provides a technical solution: a measuring instrument and an on-site supervision system for low strain detection of foundation piles comprise a testing hammer 1, impact pipes 2 and a supervision system 3, wherein a thread sleeve 19 is connected between the outer surfaces of one ends, close to two impact pipes 2, of the two impact pipes 2 in a threaded manner, the outer surfaces of the multiple impact pipes 2 are fixedly connected through a connecting plate, one sides, far away from a semicircular magnetic sleeve 5, of the impact pipes 2 are fixedly connected with an inserting sleeve 20, a fixed plate 21 is sleeved outside the inserting sleeve 20, a clamping block 22 clamped with the surface of the inserting sleeve 20 is arranged on the inner surface of the fixed plate 21, the impact pipes 2 are divided into an upper group and a lower group and are connected through the thread sleeve 19, six impact pipes 2 in each group are connected through the inserting sleeve 20, the fixed plate 21 and the clamping block 22 in a matched manner, the installation and the disassembly among all structures are convenient, the on-site installation and the transportation are convenient, the use is convenient, the sub-server 32 comprises a wireless signal transmitting module 33, the wireless signal transmitting module 33 is a wireless signal transmitting module of LC-512X model, the wireless signal transmitting module 33 is positioned in the processor 18, the central server 31 comprises a wireless signal receiving module 34, a central processing assembly 35 and a display screen 36, the wireless signal receiving module 34 is a wireless signal receiving module of LC-512X model, the wireless signal receiving module 34 is positioned in the central processing assembly 35, the output end of the processor 18 is connected with the input end of the wireless signal transmitting module 33, the output end of the wireless signal transmitting module 33 is connected with the input end of the wireless signal receiving module 34 through a wireless signal, the output end of the wireless signal receiving module 34 is connected with the input end of the central processing assembly 35, the output end of the central processing assembly 35 is connected with the input end of the display screen 36, the detecting equipment is divided into a plurality of groups, each group is a sub-server 32, the wireless signal transmitting module 33 and the wireless signal receiving module 34 are matched to wirelessly transmit detection data to the central server 31 for processing, the detection data of the whole construction site can be conveniently arranged, the construction state can be conveniently supervised, the use is convenient, the surface of the testing hammer 1 is in sliding connection with the inner surface of the impact tube 2, the top of the testing hammer 1 is in threaded connection with a metal piston 4, only the surface of the metal piston 4 is provided with steel metal, therefore, the weight of the metal piston 4 and the testing hammer 1 is not large and can be sucked up by the semicircular magnetic sleeves 5, the impact tubes 2 are provided with a plurality of impact tubes 2, the outer surfaces of the impact tubes 2 are all sleeved with the semicircular magnetic sleeves 5, the semicircular magnetic sleeves 5 are fixedly connected through a connecting plate, the semicircular magnetic sleeves 5 are clamped with the impact tubes 2 through bolts 6, and the surface of the impact tubes 2 is provided with pin holes matched with the, the top end of the impact pipe 2 is clamped with a sealing plug 7, the top of the sealing plug 7 is communicated with an aeration pipe 8, one end of the aeration pipe 8 is communicated with an aerator 9, the impact pipe 2 is arranged as a track of the metal piston 4 and the test hammer 1, after the metal piston 4 and the test hammer 1 are adsorbed by the semicircular magnetic sleeve 5, the aerator 9 is matched with the aeration pipe 8, the instantaneous impact force can provide thrust for the metal piston 4 and the test hammer 1, so that the test hammer 1 can more powerfully impact the foundation pile, the aerator 9 provides power, the fatigue caused by manual knocking is saved, a plurality of groups of impact pipes 2 and test hammers 1 are arranged, multi-point detection can be carried out, the use is convenient, the outer surface of the bottom end of the impact pipe 2 is fixedly connected with a base 10 through a flange, a low-strain foundation pile dynamic tester 11 penetrates through the middle of the top of the base 10, and the low-strain foundation pile dynamic tester 11 is a ZBL-PB000 model low-strain foundation pile dynamic, the middle of the top of the base 10 and the outside of the low-strain foundation pile dynamic measuring instrument 11 are fixedly connected with a pressing sleeve 12, the surface of the low-strain foundation pile dynamic measuring instrument 11 and the top of the base 10 are fixedly connected with a pressing ring 13, a spring 14 is fixedly connected between the top of the pressing ring 13 and the top of the inner surface of the pressing sleeve 12, the top of the pressing sleeve 12 is fixedly connected with an installation cylinder 16 through a supporting sleeve 15, the surface of the installation cylinder 16 is fixedly connected with a speed detector 17, the speed detector 17 is a CM-P type speed sensor, a through hole is formed in the position of the impact tube 2 facing the speed detector 17, the low-strain foundation pile dynamic measuring instrument 11 can be tightly pressed on the surface of a foundation pile by utilizing the matching of the spring 14, the pressing ring 13 and the pressing sleeve 12, the fluctuation can be more accurately detected, meanwhile, the speed detector 17 is arranged to detect the instantaneous speed of the falling test hammer 1, the detection precision, the surfaces of the low-strain foundation pile dynamic measuring instrument 11 and the speed detector 17 are electrically connected with a processor 18 through leads, the output ends of the speed detector 17 and the low-strain foundation pile dynamic measuring instrument 11 are connected with the input end of the processor 18, and the output end of the processor 18 is connected with the input end of the aerator 9.

When in use, six impact pipes 2 are connected into a group by a fixed disc 21, then six impact pipes 2 with flanges are fixedly connected with a base 10 by bolts, a test hammer 1 and a metal piston 4 are placed in the impact pipes 2, then two groups of impact pipes 2 are connected together by a thread sleeve 19, then a semicircular magnetic sleeve 5 is sleeved outside the impact pipes 2, a speed detector 17 and a data line of a low-strain foundation pile dynamic tester 11 are connected with a processor 18, so that detection can be carried out, the semicircular magnetic sleeve 5 positioned below is pulled upwards, the metal piston 4 is adsorbed by magnetism and drives the test hammer 1 to slide upwards, when the test hammer moves to the top, the semicircular magnetic sleeve 5 is fixed by a bolt 6, a sealing plug 7 connected with an aeration pipe 8 is plugged at the top end of one impact pipe 2, then the aerator 9 is started to inflate the impact pipes 2, and the metal piston 4 is pushed downwards by instant pressure, and then the test hammer 1 is downwards punched at a high speed until the test hammer strikes a foundation pile, meanwhile, the speed detector 17 detects the instantaneous speed of the test hammer 1, the low-strain foundation pile dynamic tester 11 detects the fluctuation of the foundation pile, then data is transmitted to the processor 18, the data is transmitted to the wireless signal receiving module 34 of the central processing assembly 35 through the wireless signal transmitting module 33, then the data is displayed on the display screen 36, after the detection is once, the sealing plug 7 can be replaced on another impact pipe 2 to test another point again until all the points are tested, or the points are selected for detection.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a measuring instrument and on-spot supervisory system for foundation pile low strain detection, includes test hammer (1), strikes pipe (2) and supervisory system (3), the surface of test hammer (1) and the internal surface sliding connection who strikes pipe (2), its characterized in that: the top threaded connection of test hammer (1) has metal piston (4), it is multiple that impact pipe (2) are provided with, and is a plurality of the surface of impact pipe (2) all overlaps and is equipped with semicircle magnetic sleeve (5), through connecting plate fixed connection between a plurality of semicircle magnetic sleeves (5), through bolt (6) joint between semicircle magnetic sleeve (5) and impact pipe (2), and the surface of impact pipe (2) set up the pinhole with bolt (6) looks adaptation, the top joint of impact pipe (2) has sealing plug (7), and the top intercommunication of sealing plug (7) has aeration pipe (8), and the one end intercommunication of aeration pipe (8) has aeration machine (9), the surface of impact pipe (2) bottom passes through flange fixed connection has base (10), the centre at base (10) top is run through there is low strain foundation pile kinematical survey appearance (11), the centre at base (10) top just is located the outside fixed connection of low strain foundation pile kinematical survey appearance (11) and is connected The device comprises a pressing sleeve (12), a pressing ring (13) is fixedly connected to the surface of the low-strain foundation pile dynamic measuring instrument (11) and located at the top of a base (10), a spring (14) is fixedly connected between the top of the pressing ring (13) and the top of the inner surface of the pressing sleeve (12), the top of the pressing sleeve (12) is fixedly connected with an installation barrel (16) through a supporting sleeve (15), and the surface of the installation barrel (16) is fixedly connected with a speed detector (17);

impact pipe (2) keep away from one side fixedly connected with plug bush (20) of semicircle magnetic sleeve (5), the outside cover of plug bush (20) is equipped with fixed disk (21), and the fixture block (22) of the surperficial looks joint with plug bush (20) is seted up to the internal surface of fixed disk (21).

2. The measuring instrument and site supervision system for pile low strain detection according to claim 1, characterized in that: the speed detector (17) is provided with a plurality of, the surface of low strain foundation pile dynamic measurement appearance (11) and speed detector (17) all has processor (18) through wire electric connection.

3. The measuring instrument and site supervision system for pile low strain detection according to claim 1, characterized in that: the outer surface of one end, close to each other, of each of the two impact pipes (2) is connected with a threaded sleeve (19) through threads, and the outer surfaces of the multiple impact pipes (2) are fixedly connected through a connecting plate.

4. The measuring instrument and site supervision system for pile low strain detection according to claim 1, characterized in that: the supervision system (3) comprises a central server (31) and a sub-server (32), wherein the sub-server (32) comprises a wireless signal transmitting module (33), and the central server (31) comprises a wireless signal receiving module (34), a central processing assembly (35) and a display screen (36).

5. The measuring instrument and site supervision system for pile low strain detection according to claim 4, characterized in that: the output ends of the speed detector (17) and the low-strain foundation pile dynamic measuring instrument (11) are connected with the input end of a processor (18), and the output end of the processor (18) is connected with the input end of an aerator (9).

6. The measuring instrument and site supervision system for pile low strain detection according to claim 5, characterized in that: the output end of the processor (18) is connected with the input end of the wireless signal transmitting module (33), and the output end of the wireless signal transmitting module (33) is connected with the input end of the wireless signal receiving module (34) through a wireless signal.

7. The measuring instrument and site supervision system for pile low strain detection according to claim 4, characterized in that: the output end of the wireless signal receiving module (34) is connected with the input end of the central processing component (35), and the output end of the central processing component (35) is connected with the input end of the display screen (36).