CN114000512A - Connecting beam and using method - Google Patents

Connecting beam and using method Download PDF

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Publication number
CN114000512A
CN114000512A CN202110992858.0A CN202110992858A CN114000512A CN 114000512 A CN114000512 A CN 114000512A CN 202110992858 A CN202110992858 A CN 202110992858A CN 114000512 A CN114000512 A CN 114000512A
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China
Prior art keywords
displacement
data processor
piles
monitor
front row
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Granted
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CN202110992858.0A
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Chinese (zh)
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CN114000512B (en
Inventor
张旭群
陈晓丹
隋耀华
刘成军
李志利
张思远
张煜钊
薛子龙
王杰
庄家煌
王城斌
兰志
颜圣
泰培
朱敬奇
陈锐
李兆锋
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Guangzhou Metro Design and Research Institute Co Ltd
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Guangzhou Metro Design and Research Institute Co Ltd
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Priority to CN202110992858.0A priority Critical patent/CN114000512B/en
Publication of CN114000512A publication Critical patent/CN114000512A/en
Application granted granted Critical
Publication of CN114000512B publication Critical patent/CN114000512B/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00—Testing foundations or foundation structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The invention discloses a connecting beam and a using method, wherein the connecting beam is used for connecting a front row of piles and a rear row of piles and comprises a first beam body, a second beam body, a first displacement monitor, a distance monitor, a displacement adjusting component and a data processor, the front row of piles are connected with a foundation pit, the displacement adjusting component can extend and shorten under the control of a first output end of the data processor and is respectively connected with the front row of piles and the rear row of piles through the first beam body and the second beam body, and the first displacement monitor is used for monitoring the first displacement of the front row of piles; the distance monitor is used for monitoring the telescopic length of the displacement adjusting assembly; the first input end of the data processor is electrically connected with the first displacement monitor and the distance monitor. The first displacement monitor transmits the measured lateral displacement of the pile body to the data processor for real-time monitoring, when the displacement is too large, the data processor controls the telescopic length of the displacement adjusting assembly to adjust the lateral displacement of the pile body of the front row pile, the situation that the front row pile is broken due to too large displacement is avoided, and then the safe construction of foundation pit engineering is guaranteed.

Description

Connecting beam and using method
Technical Field
The invention belongs to the field of construction engineering, and particularly relates to a connecting beam and a using method thereof.
Background
At present, a retaining structure which is arranged along the side wall of a foundation pit and consists of concrete front piles, rear piles and a connecting beam is a common supporting structure in the engineering construction process, wherein the front piles and the rear piles which are arranged in parallel can generate lateral displacement towards one side of the foundation pit under the action of the soil pressure of a soil body in an active area, the maximum lateral displacement of the rear piles appears at the pile top, and the displacement curve of the front piles can present a drum-shaped shape due to the soil pressure of a soil body in a passive area and the pulling of the connecting beam, namely the maximum lateral displacement can appear in the piles. Because the foundation ditch digs more deeply, the too big condition of lateral displacement can appear in preceding, back row pile, not only influences construction safety and construction progress, still can cause the destruction to the foundation basis that closes on the building on every side.
Therefore, a new technology is needed to solve the problem of excessive lateral displacement of the pile body of the front row pile in the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a connecting beam and a using method thereof, which have the effect of preventing the front row of piles from generating overlarge lateral displacement of pile bodies.
The invention adopts the following technical scheme:
the utility model provides a linking roof beam for connect front row pile and back row pile, includes first roof beam body, second roof beam body, first displacement monitor, distance monitor, displacement adjusting part and data processor, the front row pile is connected with the foundation ditch, first displacement monitor is used for monitoring the lateral displacement of the pile body of front row pile, the back row pile with the front row pile is adjacent and is located and keeps away from one side of foundation ditch.
First roof beam body one end with front row stake fixed connection, the other end with displacement adjusting part fixed connection, second roof beam body one end with back row stake fixed connection, the other end with displacement adjusting part keeps away from the one end fixed connection of first roof beam body, displacement adjusting part can extend and shorten and be located under data processor's the control first roof beam body with between the second roof beam body, the distance monitor is used for the monitoring displacement adjusting part's flexible length.
The data processor comprises a first input end and a first output end, the first output end is used for controlling the extension and the shortening of the displacement adjusting assembly, and the first input end is electrically connected with the first displacement monitor and the distance monitor respectively.
As a further improvement of the technical scheme of the invention, the data processor is also electrically connected with a wireless communicator and an alarm device.
As a further improvement of the technical scheme of the invention, the first displacement monitor is arranged on one side, close to the foundation pit, of the front row of piles.
As a further improvement of the technical scheme of the invention, the beam further comprises a first fixed support and a second fixed support, wherein the first fixed support and the second fixed support are respectively used for fixedly connecting the first beam body and the second beam body with the displacement adjusting piece.
As a further improvement of the technical scheme of the present invention, the displacement adjusting member is provided with a telescopic controller and a telescopic device, the telescopic device is provided with a second input end and an action output end, the telescopic controller is electrically connected with the second input end and is used for controlling shortening and extension of the action output end, the telescopic controller is electrically connected with the data processor, and the action output end is fixedly connected with the first fixed support.
As a further improvement of the technical scheme of the invention, the telescopic controller is a servo valve.
As a further improvement of the technical solution of the present invention, the present invention further comprises a pressure sensor, wherein the pressure sensor is installed between the motion output end and the first fixing support and electrically connected to the data processor.
A method of using an attachment beam, including an attachment beam as described above, comprising the steps of:
s1, measuring real-time data L of the first displacement by the first displacement monitoraAnd transmitting the data to the data processor for processing;
s2, real-time data LaIs recorded as La1And is compared with a preset safety value LAnBy contrast, if La1Less than LAnThen go to step S1; if L isa1Is greater than or equal toIs equal to LAnThen go to step S3;
s3, the data processor controls the displacement adjusting assembly to shorten a preset displacement LShrinking device；
S4, recording the first displacement after L shortening as LcWherein L isc＝La 1-LShrinking deviceIf L iscLess than LAnThen go to step S1; if L iscGreater than or equal to LAnThen go to step S5;
s5, the distance monitor measures real-time data L of the telescopic length of the displacement adjusting assemblybAnd transmitted to the data processor;
s6, real-time data LbA minimum length L obtained after shortening the displacement adjusting componentminBy contrast, if LbGreater than LminThen go to step S3; if L isbLess than or equal to LminThen execution is terminated.
Compared with the prior art, the invention has the beneficial effects that:
be equipped with the displacement adjusting part between preceding row pile and the back row pile, the displacement adjusting part is through first roof beam body, the second roof beam body respectively with preceding row pile, back row pile fixed connection, the first displacement monitor of installing at preceding row pile can transmit the pile body lateral displacement who records to data processor, through artifical or script real-time supervision, when the displacement of double row pile is too big, or take measures by manual or script when taking place emergency probably makes the lateral displacement of pile too big, carry the signal to data processor, make data processor control displacement adjusting part's flexible length adjust the interval between the front and back row pile, thereby adjust the lateral displacement of preceding row pile body, avoid causing the front row pile to split because preceding row pile body lateral displacement is too big, and then guarantee the safe construction of foundation ditch engineering.
Drawings
The technology of the present invention will be described in further detail with reference to the accompanying drawings and detailed description below:
fig. 1 is a schematic view of the overall structure.
Fig. 2 is a flow chart of the tie beam use process.
Reference numerals:
1-front row of piles;
2-rear row of piles;
3-a first beam;
4-a second beam;
5-a first displacement monitor;
6-a distance monitor;
7-a displacement adjustment assembly; 71-telescoping controller; 72-a telescopic device; 721-a second input; 722-an action output;
8-a data processor; 81-a first input; 82-a first output;
9-foundation pit;
10-a first fixed support;
11-a second fixed support;
12-pressure sensor.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the respective components of the present invention with respect to each other in the drawings.
Referring to fig. 1 to 2, a connecting beam for connecting a front row pile 1 and a rear row pile 2 includes a first beam body 3, a second beam body 4, a first displacement monitor 5, a distance monitor 6, a displacement adjusting assembly 7 and a data processor 8, wherein the first displacement monitor 5 is preferably a displacement sensor and may be provided with a resistance strain gauge, an adjuster and an amplifier, the distance monitor 6 is preferably a distance sensor, the first beam body 3 and the second beam body 4 are preferably h-shaped steel structures, the front row pile 1 and the rear row pile 2 are of concrete structures and are internally provided with a steel reinforcement framework, the front row pile 1 is connected with a foundation pit 9, the first displacement monitor 5 is used for monitoring lateral displacement of a pile body of the front row pile 1, the rear row pile 2 is adjacent to the front row pile 1 and is located at a side far away from the foundation pit 9, the first displacement monitor 5 is mounted at a side of the front row pile 1 close to the foundation pit 9, it is convenient to monitor the lateral displacement of the front row of piles 1.
First roof beam body 3 one end with 1 inside steel reinforcement framework fixed connection of front row pile, the preferred welding of fixed connection mode, the other end with displacement adjustment subassembly 7 fixed connection. One end of the second beam body 4 is fixedly connected with the steel reinforcement framework inside the back row pile 2, the other end of the second beam body is fixedly connected with one end of the displacement adjusting assembly 7 far away from the first field beam body, the fixed connection mode is preferably welding, the displacement adjustment assembly 7 is extendable and retractable under the control of the data processor 8 and is located between the first beam 3 and the second beam 4, the distance monitor 6 is used for monitoring the telescopic length of the displacement adjusting component 7, the data processor 8 is also electrically connected with a wireless communicator and an alarm device, when the lateral displacement of the pile body of the front row pile 1 is overlarge and cannot be adjusted, the alarm device is started and alarm information that the lateral displacement of the pile body of the front row pile 1 is overlarge is output through the wireless communicator, the alarm reminding device can give an alarm to constructors to remind the constructors, and meanwhile, the escape time can be provided when dangerous conditions cannot be solved.
The data processor 8 comprises a first input end 81 and a first output end 82, the first output end 82 is used for controlling the extension and the shortening of the displacement adjusting component 7, the first input end 81 is respectively electrically connected with the first displacement monitor 5 and the distance monitor 6, the first displacement monitor 5 arranged on the front row pile 1 can transmit the measured lateral displacement of the pile body to the data processor 8, and after manual or script real-time monitoring, when the displacement of the double row pile is overlarge or the lateral displacement of the pile is possibly overlarge due to an emergency, measures are taken manually or by scripts to transmit signals to the data processor 8, so that the data processor 8 controls the telescopic length of the displacement adjusting component 7 to adjust the distance between the front row pile 2 and the rear row pile 2, thereby adjusting the lateral displacement of the pile body of the front row pile 1, and avoiding the breakage of the front row pile 1 caused by overlarge lateral displacement of the pile body of the front row pile 1, thereby ensuring the safe construction of the foundation pit 9 engineering. The connecting beam adopts a non-concrete structure, so that on one hand, a large amount of construction materials are saved, on the other hand, due to the characteristic that the concrete structure is compression-resistant and not tensile, the concrete double-row piles cannot bear overlarge strain, and the tensile area of the double-row pile structure is easily damaged under the pressure action of the soil body of the active area.
The number and location of the distance monitors 6 can be changed at any time according to the site construction needs, and in one embodiment, the distance monitors 6 are mounted on the first fixing support 10.
In another embodiment, the distance monitor 6 is mounted on the first beam 3.
Specifically, the first fixed support 10 and the second fixed support 11 are further included, the fixed supports may preferably be fixed joints, and the first fixed support 10 and the second fixed support 11 are respectively used for fixedly connecting the first beam body 3 and the second beam body 4 with the displacement adjusting member.
Specifically, the displacement adjusting member is provided with a telescopic controller 71 and a telescopic device 72, the telescopic controller 71 may preferably be a servo valve, the displacement adjusting member may preferably be a hydraulic cylinder with a piston rod, the servo valve receives an electrical signal and converts the electrical signal into a hydraulic signal to adjust the length of the piston rod extending out of the hydraulic cylinder so as to shorten the length, the telescopic device 72 is provided with a second input end 721 and an action output end 722, the telescopic controller 71 is electrically connected with the second input end 721 and is used for controlling the shortening and the extending of the action output end 722, the telescopic controller 71 is electrically connected with the data processor 8, the action output end 722 is fixedly connected with the first fixed support 10, and the action output end 722 is arranged at one end of the displacement adjusting member close to the front row pile 1, so as to adjust the lateral displacement of the pile body of the front row pile 1. The data processor 8 transmits an electric signal to the telescopic controller 71, and the telescopic controller 71 converts the electric signal into an action signal of the telescopic device 72 to control the shortening of the action output end 722 so as to shorten the whole length of the connecting beam and reduce the lateral displacement of the pile body of the front row pile 1.
Specifically, still include pressure sensor 12, pressure sensor 12 installs action output 722 with between the first fixing support 10 and with data processor 8 electricity is connected, can real-time recording the load between the row's of piles 2 around, can speculate the dangerous condition according to the load numerical value of record, can start wireless communication ware and the alarm device who is connected with data processor 8 electricity when the load numerical value between the current row's of piles 2 is too big or suddenly too big to report to the police and remind constructor, can provide the time of fleing when the dangerous condition can't be solved simultaneously.
As shown in fig. 2, the invention also discloses a use method of the connecting beam, which comprises the following steps:
s1, when the pile body of the current row pile 1 generates lateral displacement towards the direction of a foundation pit 9, the first displacement monitor 5 installed on the front row pile 1 measures the first displacement, namely real-time data L of the pile body lateral displacement of the front row pile 1aAnd transmitted to the data processor 8 for processing, the real-time data L of the first displacementaThe lateral displacement from the initial vertical pile body position of the front row of piles 1 to the pile body position during detection.
S2, recording the real-time data La as La1And is compared with a preset safety value LAnComparing and presetting a safety value LAnCan be set according to the site construction condition, if La1Less than LAnWhen the lateral displacement of the pile body of the front row pile 1 is smaller than the preset safety value, executing the step S1 to continuously record the numerical value of the lateral displacement; if L isa1Greater than or equal to LAnThen, step S3 is executed, and when the lateral displacement of the pile body of the front row pile 1 is greater than or equal to the preset safety value, the data processor 8 sends a shortened electrical signal to the displacement adjustment assembly 7.
S3, the data processor 8 controls the displacement adjusting assembly 7 to shorten the preset displacement LShrinking deviceA preset safety value LShrinking deviceCan be set according to the site construction situation, the displacement regulating component 7 receives the shortening sent by the data processor 8The displacement adjusting component 7 executes shortening action to shorten the connecting beam body, so that the lateral displacement of the pile body of the front row pile 1 is reduced by LShrinking deviceLength of (d).
S4, shortening LShrinking deviceSaid first displacement after this is denoted LcWherein L isc＝La1-LShrinking device，LcFor the front row pile 1 to shorten to LShrinking deviceThe lateral displacement of the pile body position detected after the length is LcLess than LAnThe lateral displacement of the pile body of the front row of piles 1 after the shortening action is less than a preset safety value LAnIf so, namely the adjustment of the lateral displacement of the pile body of the front row pile 1 is finished, executing the step S1 to continuously record the numerical value of the lateral displacement; if L iscGreater than or equal to LAnThe adjusted pile body lateral displacement of the front row of piles 1 is still larger than or equal to a preset safety value LAnThen, the step of reducing the lateral displacement of the pile body of the front pile 1 needs to be executed continuously, and step S5 needs to be executed before the shortening action is executed further to determine whether the displacement adjusting assembly 7 can execute the shortening action further.
S5, the distance monitor 6 measures real-time data L of the telescopic length of the displacement adjusting component 7bAnd transmitted to the data processor 8, the displacement regulating component 7 executes the real-time data L of the telescopic length after the command is shortenedbLess than the initial length L of the displacement regulating assembly 7First stageWherein L isb＝LFirst stage-LShrinking device。
S6, when the displacement adjusting component 7 realizes maximum shortening displacement, the displacement adjusting component has a minimum length LminReal-time data LbA minimum length L obtained by shortening the displacement adjusting assembly 7minBy contrast, if LbGreater than LminIf the maximum displacement of the displacement adjusting assembly 7 is not achieved yet and the further shortening action can be performed, step S3 is executed to further adjust the lateral displacement of the pile body of the front row pile 1; if L isbLess than or equal to LminWhen the displacement adjustment assembly 7 has achieved maximum displacement, the first displacement monitor 5 continues to record the lateral displacement of the front pile 1, but the data processor 8 no longer controls the displacement adjustment assembly 7 furtherAnd the shortening action is executed, and the site constructor can obtain the warning information.
Other contents of the connecting beam and the using method are referred to in the prior art and are not described herein again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims (8)

1. The utility model provides a tie beam for connect front row pile and back row pile, its characterized in that: the pile displacement monitoring device comprises a first beam body, a second beam body, a first displacement monitor, a distance monitor, a displacement adjusting assembly and a data processor, wherein the front row of piles are connected with a foundation pit, the first displacement monitor is used for monitoring the lateral displacement of the pile body of the front row of piles, and the rear row of piles are adjacent to the front row of piles and are positioned on one side far away from the foundation pit;
one end of the first beam body is fixedly connected with the front row of piles, the other end of the first beam body is fixedly connected with the displacement adjusting assembly, one end of the second beam body is fixedly connected with the rear row of piles, the other end of the second beam body is fixedly connected with one end, far away from the first field beam body, of the displacement adjusting assembly, the displacement adjusting assembly can extend and shorten under the control of the data processor and is located between the first beam body and the second beam body, and the distance monitor is used for monitoring the extension length of the displacement adjusting assembly;
the data processor comprises a first input end and a first output end, the first output end is used for controlling the extension and the shortening of the displacement adjusting assembly, and the first input end is electrically connected with the first displacement monitor and the distance monitor respectively.
2. The tie beam of claim 1, wherein: the data processor is also electrically connected with a wireless communicator and an alarm device.
3. The tie beam of claim 1, wherein: the first displacement monitor is installed on one side, close to the foundation pit, of the front row of piles.
4. The tie beam of claim 1, wherein: the first fixed support and the second fixed support are respectively used for fixedly connecting the first beam body and the second beam body with the displacement adjusting piece.
5. The tie beam of claim 4, wherein: the displacement regulating part is equipped with flexible controller and telescoping device, the telescoping device is equipped with second input and action output, flexible controller with the second input electricity is connected, is used for control shortening and extension of action output, flexible controller with the data processor electricity is connected, the action output with first fixing support fixed connection.
6. The tie beam of claim 5, wherein: the telescopic controller is a servo valve.
7. The tie beam of claim 5, wherein: the pressure sensor is installed between the action output end and the first fixed support and electrically connected with the data processor.
8. A method of using an attachment beam comprising the attachment beam of any one of claims 1-7, wherein: the method comprises the following steps:
s1, real-time data L of first displacement measured by the first displacement monitoraAnd transmitting the data to the data processor for processing;
s2, real-time data LaIs recorded as La1And is compared with a preset safety value LAnBy contrast, if La1Less than LAnThen step S1 is executed(ii) a If L isa1Greater than or equal to LAnThen go to step S3;
s3, the data processor controls the displacement adjusting assembly to shorten a preset displacement LShrinking device；
S4, shortening LShrinking deviceSaid first displacement after this is denoted LcWherein L isc＝La1-LShrinking deviceIf L iscLess than LAnThen go to step S1; if L iscGreater than or equal to LAnThen go to step S5;
s5, the distance monitor measures real-time data L of the telescopic length of the displacement adjusting assemblybAnd transmitted to the data processor;
s6, real-time data LbA minimum length L obtained after shortening the displacement adjusting componentminBy contrast, if LbGreater than LminThen go to step S3; if L isbLess than or equal to LminThen execution is terminated.
CN202110992858.0A 2021-08-27 2021-08-27 Connecting beam and using method Active CN114000512B (en)

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CN111576902A (en) * 2020-04-30 2020-08-25 上海佳友市政建筑有限公司 Device that non-excavation construction both ends work hole was strutted is exclusively used in

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CN104532853A (en) * 2014-12-30 2015-04-22 武汉中力岩土工程有限公司 Deep foundation pit supporting method and system characterized by steel reinforced cement-soil piles, bolts easy to detach and automatic monitoring and early warning
US20180209114A1 (en) * 2015-07-22 2018-07-26 James Foley Trench box and method of assembly
KR101599327B1 (en) * 2015-10-16 2016-03-03 롯데건설 주식회사 Earth self-retaining wall method
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CN114561957B (en) * 2022-03-15 2024-06-07 中铁四院集团工程建设有限责任公司 Foundation pit supporting system adjacent to existing building and construction method thereof

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