CN114000512B - Connecting beam and using method - Google Patents

Connecting beam and using method Download PDF

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Publication number
CN114000512B
CN114000512B CN202110992858.0A CN202110992858A CN114000512B CN 114000512 B CN114000512 B CN 114000512B CN 202110992858 A CN202110992858 A CN 202110992858A CN 114000512 B CN114000512 B CN 114000512B
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China
Prior art keywords
displacement
piles
data processor
monitor
front row
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CN114000512A (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
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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)
  • General Engineering & Computer Science (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Piles And Underground Anchors (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (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, the retaining structure who comprises concrete front row stake, back row stake and tie beam of arranging the setting along the foundation ditch lateral wall is common supporting construction in the engineering work progress, wherein parallel arrangement's front row stake, back row stake are under the soil pressure effect of the initiative district soil body, the concrete stake can produce the lateral displacement towards foundation ditch one side, the biggest lateral displacement of back row stake appears at the pile bolck, and front row stake is owing to the soil pressure of passive area soil body and the drawing of tie beam, its displacement curve can present drum belly shape, the biggest lateral displacement promptly can appear in the stake. 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 a front row of piles from generating overlarge lateral displacement of a pile body.
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 movable 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 solution 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 for controlling the shortening and the extension of the action output end, the second input end 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 scheme of the invention, the device further comprises a pressure sensor, wherein the pressure sensor is installed between the action output end and the first fixed support and is electrically connected with 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 monitor a And transmitting the data to the data processor for processing;
s2, real-time data L a Is recorded as L a1 And is compared with a preset safety value L An By contrast, if L a1 Less than L An If yes, executing step S1; if L is a1 Greater than or equal to L An If yes, executing step S3;
s3, the data processor controls the displacement adjusting assembly to shorten the preset displacement L Shrinking device ；
S4, shortening L Shrinking device Said first displacement after this is denoted L c Wherein L is c =L a 1 -L Shrinking device If L is c Less than L An If yes, executing step S1; if L is c Greater than or equal to L An If yes, executing step S5;
s5, the distance monitor measures real-time data L of the telescopic length of the displacement adjusting assembly b And transmitted to the data processor;
s6, real-time data L b A minimum length L obtained after shortening the displacement adjusting component min By contrast, if L b Greater than L min If yes, executing step S3; if L is b Less than or equal to L min Then execution is terminated.
Compared with the prior art, the invention has the beneficial effects that:
the displacement adjusting assembly is arranged between the front row of piles and the rear row of piles and is fixedly connected with the front row of piles and the rear row of piles respectively through the first beam body and the second beam body, a first displacement monitor installed on the front row of piles can transmit measured lateral displacement of the pile bodies to the data processor, and the data processor can monitor the displacement of the front row of piles and the lateral displacement of the rear row of piles in real time through manual operation or scripts.
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 are as follows:
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, in the present application, the embodiments and features of the embodiments 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, 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 an i-shaped steel structure, the front row pile 1 and the rear row pile 2 are of a concrete structure 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 located on one side far away from the foundation pit 9, and the first displacement monitor 5 is mounted on one side of the front row pile 1 close to the foundation pit 9, so as to monitor lateral displacement of the front row pile 1.
First roof beam body 3 one end with the inside framework of steel reinforcement fixed connection of front row pile 1, the preferred welding of fixed connection mode, the other end with displacement adjustment subassembly 7 fixed connection. 4 one end of the second roof beam body with 2 inside steel framework fixed connection of back campshed, the other end with displacement adjusting subassembly 7 keeps away from the one end fixed connection of the first roof beam body 3, the preferred welding of fixed connection mode, displacement adjusting subassembly 7 can extend and shorten and be located under data processor 8's the control first roof beam body 3 with between the second roof beam body 4, distance monitor 6 is used for monitoring displacement adjusting subassembly 7's flexible length, data processor 8 still electricity is connected with wireless communication ware and alarm device, and when the lateral displacement of 1 pile body of present campshed was too big and can not be adjusted, start alarm device and pass through 1 pile body lateral displacement too big alarm information of preceding campshed of wireless communication ware output to report to the police to remind constructor, can provide the time of fleing when the dangerous condition can't be solved simultaneously.
Data processor 8 includes first input 81 and first output 82, first output 82 is used for control displacement adjusting part 7's extension and shortening, first input 81 respectively with first displacement monitor 5 distance monitor 6 electricity is connected, and the first displacement monitor 5 of installation at front row pile 1 can transmit the pile body lateral displacement who records to data processor 8, through artifical or script real-time supervision, when the displacement of double row pile is too big, or takes place emergency and probably make pile lateral displacement too big, take measures by manual or script, to data processor 8 transport signal, make data processor 8 control displacement adjusting part 7's flexible length adjust the interval between front and back row pile 2 to adjust the lateral displacement of front row pile 1 pile body, avoid causing front row pile 1 to break because front row pile 1 pile body lateral displacement is too big, and then guarantee the safe construction of foundation ditch 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 mount 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 second input end 721 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 front row pile 1 generates lateral displacement towards the direction of the foundation pit 9, the first displacement monitor arranged on the front row pile 1The detector 5 measures the first displacement, namely the real-time data L of the lateral displacement of the pile body of the front row of piles 1 a And transmitted to the data processor 8 for processing, the real-time data L of the first displacement a The lateral displacement from the initial vertical pile body position of the front row of piles 1 to the pile body position during detection.
S2, real-time data L a Is recorded as L a1 And is compared with a preset safety value L An Comparing and presetting a safety value L An Can be set according to the site construction condition, if L a1 Less than L An When the lateral displacement of the pile body of the front row of piles 1 is smaller than a preset safety value, executing the step S1 to continuously record the numerical value of the lateral displacement; if L is a1 Greater than or equal to L An If 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 electric signal to the displacement adjusting assembly 7 in step S3.
S3, the data processor 8 controls the displacement adjusting assembly 7 to shorten the preset displacement L Shrinking device A preset safety value L Shrinking device Can be set according to the site operation condition, the displacement adjusting component 7 receives the electrical signal that the data processor 8 sent out the shortening, and the displacement adjusting component 7 carries out the action of shortening and realizes that the beam body of the connecting beam shortens to make the lateral displacement of the pile body of the front row pile 1 reduce L Shrinking device Of the length of (c).
S4, shortening L Shrinking device Said first displacement after this is denoted L c Wherein L is c =L a1 -L Shrinking device ，L c For the front row pile 1 to shorten to L Shrinking device The lateral displacement of the pile body position detected after the length is L c Less than L An The lateral displacement of the pile body of the front row of piles 1 after the shortening action is smaller than a preset safety value L An When the lateral displacement of the pile body of the front row pile 1 is adjusted, executing the step S1 to continuously record the numerical value of the lateral displacement; if L is c Greater than or equal to L An The adjusted pile body lateral displacement of the front row of piles 1 is still greater than or equal to a preset safety value L An If the displacement of the front row pile 1 is reduced, the step S5 is performed to determine whether the displacement adjusting assembly 7 can perform the shortening operationFurther shortening is performed.
S5, the distance monitor 6 measures real-time data L of the telescopic length of the displacement adjusting component 7 b And 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 shortened b Less than the initial length L of the displacement regulating assembly 7 First stage Wherein L is b =L First stage -L Shrinking device 。
S6, when the displacement adjusting component 7 realizes maximum shortening displacement, the displacement adjusting component has a minimum length L min Real-time data L b A minimum length L obtained after shortening the displacement regulating member 7 min By contrast, if L b Greater than L min If the maximum displacement of the displacement adjusting assembly 7 is not realized yet and the further shortening action can be executed, the step S3 is executed to further adjust the lateral displacement of the pile body of the front row pile 1; if L is b Less than or equal to L min When the displacement adjusting assembly 7 has achieved the 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 adjusting assembly 7 to further perform the shortening action, and the site constructor can thus obtain 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 (7)

1. A use method of a connecting beam is characterized in that: the pile foundation pit pile displacement monitoring device comprises a connecting beam, wherein the connecting beam is used for connecting a front row of piles and a rear row of piles, the connecting beam comprises a first beam body, a second beam body, a first displacement monitor, a distance monitor, a displacement adjusting assembly and a data processor, 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 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 contraction of the displacement adjusting assembly, and the first input end is electrically connected with the first displacement monitor and the distance monitor respectively;
the use method of the connecting beam comprises the following steps:
s1, real-time data L of first displacement measured by the first displacement monitor a And transmitting the data to the data processor for processing;
s2, real-time data L a Is recorded as L a1 And is compared with a preset safety value L An By contrast, if L a1 Less than L An If yes, executing step S1; if L is a1 Greater than or equal to L An If yes, executing step S3;
s3, the data processor controls the displacement adjusting assembly to shorten the preset displacement L Shrinking device ；
S4, shortening L Shrinking device Said first displacement after this is denoted L c Wherein L is c =L a1 -L Shrinking device If L is c Less than L An If yes, executing step S1; if L is c Greater than or equal to L An If yes, executing step S5;
s5, the distance monitor measures real-time data L of the telescopic length of the displacement adjusting assembly b And transmitted to the data processor;
s6, real-time data L are processed b A minimum length L obtained after shortening the displacement regulating component min By contrast, if L b Greater than L min If yes, executing step S3; if L is b Less than or equal to L min Then execution is terminated.
2. The method of using the tie beam of claim 1, wherein: the data processor is also electrically connected with a wireless communicator and an alarm device.
3. The method of using 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 method of using 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 method of using 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 the extension of action output, the second input with the data processor electricity is connected, the action output with first fixing support fixed connection.
6. The method of using the tie beam of claim 5, wherein: the telescopic controller is a servo valve.
7. The method of using 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.
CN202110992858.0A 2021-08-27 2021-08-27 Connecting beam and using method Active CN114000512B (en)

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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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CN104532853B (en) * 2014-12-30 2017-03-22 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
CA2898002A1 (en) * 2015-07-22 2017-01-22 James Foley Trench box and method of assembly
KR101599327B1 (en) * 2015-10-16 2016-03-03 롯데건설 주식회사 Earth self-retaining wall method
CN107630478B (en) * 2017-11-02 2023-05-12 中国建筑第八工程局有限公司 Simulation test device and method for action mechanism of pile-soil-anchor combined support system
CN208266878U (en) * 2017-12-14 2018-12-21 上海天演建筑物移位工程股份有限公司 Pattern foundation pit supporting structure intelligence support device
CN110984180B (en) * 2019-12-13 2021-10-29 中交第一航务工程局有限公司 Supporting system for excavating pipe gallery foundation trench and construction method thereof
CN111122329A (en) * 2020-01-21 2020-05-08 中铁十五局集团有限公司 Electric movable retaining wall test system
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