JP2011256652A - Pneumatic caisson settling method - Google Patents

Pneumatic caisson settling method Download PDF

Info

Publication number
JP2011256652A
JP2011256652A JP2010133610A JP2010133610A JP2011256652A JP 2011256652 A JP2011256652 A JP 2011256652A JP 2010133610 A JP2010133610 A JP 2010133610A JP 2010133610 A JP2010133610 A JP 2010133610A JP 2011256652 A JP2011256652 A JP 2011256652A
Authority
JP
Japan
Prior art keywords
caisson
inclination
hydraulic jacks
ground
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2010133610A
Other languages
Japanese (ja)
Inventor
Motoo Mochidome
留 元 男 持
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maruto Ind Co Ltd
MARUTO INDUSTRY CO Ltd
Original Assignee
Maruto Ind Co Ltd
MARUTO INDUSTRY CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maruto Ind Co Ltd, MARUTO INDUSTRY CO Ltd filed Critical Maruto Ind Co Ltd
Priority to JP2010133610A priority Critical patent/JP2011256652A/en
Publication of JP2011256652A publication Critical patent/JP2011256652A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Working Measures On Existing Buildindgs (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a caisson settling method capable of accurately correcting an inclination of a caisson through a remote operation immediately after detecting such inclination and reducing problematic seismic movement which possibly coincides with a caisson settling operation.SOLUTION: The method comprises: a display monitor 11 of a caisson inclination measuring device to monitor a settling operation from a ground level; hydraulic jacks 6,6 at four corners of a ceiling slab 2 of a caisson working room 3; and a remote operation control panel 10 placed above ground to control the hydraulic jacks 6,6. With the remote operation panel 10, the hydraulic jacks 6 at a side where a level of a cutting edge 1a is lower can be controlled to correct an inclination by extending the same or the hydraulic jack 6 extended at the time when the caisson is settled can be controlled to gradually contract the same.

Description

本発明は、ニューマチックケーソン（以下単にケーソンという）の沈設に際し、ケーソンの傾斜修正や微速度沈下を地上から遠隔操作で行うことができるケーソンの沈設工法に関するものである。   The present invention relates to a caisson laying method that can perform caisson inclination correction and subsidence by remote control from the ground when a pneumatic caisson (hereinafter simply referred to as caisson) is laid.

周知のように、ケーソンは地盤の所定位置まで、鉛直に沈下させ設定させる必要があり、ケーソン傾斜計測システム等により沈設時の傾斜状況をモニターで監視しつつ、ケーソンが傾斜した時はテレビカメラから伝送される映像をモニターテレビで見ながら、掘削機を遠隔操作等により運転して刃先等の下を掘削するなどして、傾斜修正を行なっている。   As is well known, it is necessary to set the caisson vertically by sinking it to a predetermined position on the ground. When the caisson is tilted, the caisson tilt measurement system etc. While watching the transmitted image on the monitor TV, the excavator is operated by remote control or the like to excavate under the cutting edge and so on to correct the inclination.

しかし乍ら、この修正作業は掘削機等を使用するため、迅速性と修正の精度に問題があった。   However, since this correction work uses an excavator or the like, there is a problem in the speed and accuracy of the correction.

また、ケーソンの沈下時に、地震動を生じ、ケーソンの沈設場所が住宅地に近い場合は、周辺住民の顰蹙を買っていた。   In addition, when the caisson subsidized, earthquake motion occurred, and when the caisson was set up near a residential area, the surrounding residents bought firewood.

平成５年３月 日本圧気技術協会発行「ニューマチックケーソン工法施工マニュアル」March 1993 "Pneumatic caisson method construction manual" published by Japan Pressure Technology Association

そこで本発明は、ケーソンの傾斜を検出した時、遠隔操作により直ちに精度良く修正することが出来、また問題となっているケーソン沈下時に発生する地震動を軽減することが出来るケーソンの沈設工法を提供することを課題とするものである。   Accordingly, the present invention provides a caisson laying method that can be corrected immediately and accurately by remote control when a caisson inclination is detected, and can reduce the earthquake motion that occurs when the caisson sinks in question. This is a problem.

本発明は、上記の課題を解決するためになされたもので、地上で監視できるケーソン傾斜計測手段を設け、且つ、ケーソンの作業室天井の少なくとも四隅に油圧ジャッキを固定すると共に、前記油圧ジャッキの遠隔操作装置を地上に設け、この遠隔操作装置により、刃口の低い側の油圧ジャッキのジャッキアップによる傾斜の修正又は、ケーソンの降下時に伸長させた油圧ジャッキの微速縮小による微速沈下を行わせることを特徴とするニューマチックケーソンの沈設工法である。   The present invention has been made in order to solve the above-described problems, and includes caisson inclination measuring means that can be monitored on the ground, and fixing hydraulic jacks at least at four corners of the caisson working room ceiling, A remote control device is installed on the ground, and this remote control device makes it possible to correct the inclination by jacking up the hydraulic jack with the lower blade edge, or to perform subsidence by slowing down the hydraulic jack extended when the caisson descends. This is a pneumatic caisson construction method.

本発明は、地上で監視できるケーソンの傾斜計測手段と、遠隔操作の油圧ジャッキをケーソンの作業室天井の少なくとも四隅に設けたので、前記ケーソンの傾斜計測手段により、ケーソンの傾斜を検知したときに、直ちに刃口の低い側の油圧ジャッキを遠隔操作により伸長させることにより、傾斜を修正することができる。   In the present invention, the caisson inclination measuring means that can be monitored on the ground and the remotely operated hydraulic jacks are provided at at least four corners of the ceiling of the caisson's work room, so when the caisson inclination measuring means detects the inclination of the caisson. The inclination can be corrected by immediately extending the hydraulic jack on the lower end of the blade edge by remote control.

また、大型のケーソンの場合、従来、沈下開始時に、大きな地震動を発生していたが、沈下開始に先立って、油圧ジャッキを伸長させてケーソン支持の状態とし、次いで全油圧ジャッキを微速縮小させて沈下速度を遅速させることにより地震動を軽減させることができる。   In the case of a large caisson, a large earthquake motion has been generated at the start of the settlement. Seismic motion can be reduced by slowing down the settlement speed.

本発明の実施例の概略構成を示す縦断面図。The longitudinal cross-sectional view which shows schematic structure of the Example of this invention. 本発明の実施例における微速沈下の動作説明図。The operation | movement explanatory drawing of the subsidence in the Example of this invention.

図１は本発明の実施例の概略構成を示す縦断面図で、１はケーソン本体、１ａはその刃口、２は作業室３の天井スラブ、４はマンシャフト、５はマテリアルシャフトである。   FIG. 1 is a longitudinal sectional view showing a schematic configuration of an embodiment of the present invention, wherein 1 is a caisson body, 1a is its blade edge, 2 is a ceiling slab of a work chamber 3, 4 is a man shaft, and 5 is a material shaft.

本発明実施例では、前記作業室３の天井スラブ２の少なくとも四隅に油圧ジャッキ６，６を設け、その送油管７をケーソン本体１に予め設けられたブローパイプ８内を通して、地上に設置した油圧装置９と遠隔操作盤１０に接続した。なお油圧ジャッキはケーソンの大きさに応じて必要数設置することは説明する迄もないところである。   In the embodiment of the present invention, hydraulic jacks 6 and 6 are provided in at least four corners of the ceiling slab 2 of the working chamber 3, and oil supply pipes 7 are installed on the ground through the blow pipe 8 provided in the caisson body 1 in advance. The apparatus 9 and the remote control panel 10 were connected. Needless to say, the required number of hydraulic jacks is installed according to the size of the caisson.

また、１１は、ケーソン傾斜計測手段における表示モニター、１１ａは前記表示モニターに接続される傾斜計、１２は天井スラブ２に設けたテレビカメラ、１３はそのモニターテレビ、１４は作業室内に配置した掘削機（開示せず）の遠隔操作盤である。
なお、表示モニター１１には、ケーソンの傾斜状況のみならず図示しないケーソンに設けた函内圧力計や函内ガス濃度計、函内温度計等による検出値が表示される。 Further, 11 is a display monitor in the caisson inclination measuring means, 11a is an inclinometer connected to the display monitor, 12 is a television camera provided on the ceiling slab 2, 13 is a monitor television, and 14 is an excavator disposed in the work chamber. This is a remote control panel of a machine (not disclosed).
The display monitor 11 displays not only the inclination state of the caisson but also the detected value by a box internal pressure gauge, a box internal gas concentration meter, a box internal thermometer or the like provided in the caisson not shown.

次に、ケーソンの傾斜修正の手順について説明すると、ケーソンの傾斜は傾斜計１１ａによって検出され、表示モニター１１の画面上に、沈下に応じて変化するケーソンの傾斜状況が表示されるので、それを見乍ら所定量以上にケーソンが傾斜する前に、刃口１ａの低い側に設けられた油圧ジャッキ６を遠隔操作レバー１０ａを操作して伸長させて傾斜修正を行なう。   Next, the caisson inclination correction procedure will be described. The inclination of the caisson is detected by the inclinometer 11a, and the inclination state of the caisson that changes according to the sinking is displayed on the screen of the display monitor 11. Apparently, before the caisson inclines more than a predetermined amount, the hydraulic jack 6 provided on the lower side of the blade edge 1a is extended by operating the remote control lever 10a to correct the inclination.

また、ケーソンの沈下開始前に図２に示すように、全油圧ジャッキ６，６を伸長させてケーソン支持の状態とした後、全油圧ジャッキ６，６を微速縮小させて沈下速度を遅速させることにより地震動を軽減させ、産業公害を緩和することができる。   Further, as shown in FIG. 2, before the caisson starts to sink, all the hydraulic jacks 6, 6 are extended to be in a caisson-supported state, and then all the hydraulic jacks 6, 6 are slightly reduced to slow down the settlement speed. Can reduce earthquake motion and industrial pollution.

以上説明したように、このシステムは、地上より遠隔操作で傾斜を修正することができるため、高気圧室内業務の省力化となり、公知のケーソン計測システム等と一体化することにより高精度のケーソン沈設が可能である。   As explained above, since this system can correct the inclination by remote control from the ground, it becomes labor-saving in high-pressure indoor work, and by integrating with a known caisson measurement system etc., highly accurate caisson deposition can be achieved. Is possible.

本工法における油圧ジャッキの操作は、下記のような場合に有用である。
１）ケーソンの初期沈下時に初期の不当沈下を修正するために使用する。
２）鋼殻ケーソン裾付時に着底後の傾斜修正に使用する。
３）沈下完了後、コンクリート打設の沈下重量に対抗する沈下抵抗として
使用する。
４）ケーソンの自重が沈下抵抗よりも大きい場合に、沈下を制御するため
に使用する。
５）最終掘削時でも沈下荷重が大きい場合に使用する。 The operation of the hydraulic jack in this method is useful in the following cases.
1) Used to correct initial improper settlement during initial caisson settlement.
2) Used to correct the inclination after bottoming when the steel shell caisson is attached.
3) After the settlement is completed, use it as a settlement resistance against the settlement weight of concrete casting.
4) Used to control settlement when the weight of the caisson is greater than the settlement resistance.
5) Used when the subsidence load is large even during final excavation.

１ ケーソン本体
１ａ 刃口
２ 天井スラブ
３ 作業室
４ マンシャフト
５ マテリアルシャフト
６ 油圧ジャッキ
７ 送油管
８ ブローパイプ
９ 油圧装置
１０ 遠隔操作盤
１０ａ 遠隔操作レバー
１１ 表示モニター
１１ａ 傾斜計
１２ テレビカメラ
１３ モニターテレビ
１４ 遠隔操作盤 DESCRIPTION OF SYMBOLS 1 Caisson main body 1a Cutting edge 2 Ceiling slab 3 Work room 4 Man shaft 5 Material shaft 6 Hydraulic jack 7 Oil supply pipe 8 Blow pipe 9 Hydraulic device 10 Remote operation panel 10a Remote operation lever 11 Display monitor 11a Inclinometer 12 Television camera 13 Monitor television
14 Remote control panel

Claims (1)

地上で監視できるケーソン傾斜計測手段を設け、且つケーソンの作業室天井の少なくとも四隅に油圧ジャッキを固定すると共に、前記油圧ジャッキの遠隔操作装置を地上に設け、この遠隔操作装置により刃口の低い側の油圧ジャッキのジャッキアップによる傾斜の修正、又は、ケーソンの降下時に伸長させた油圧ジャッキの微速縮小による微速沈下を行わせることを特徴とするニューマチックケーソンの沈設工法。 A caisson inclination measuring means that can be monitored on the ground is provided, and hydraulic jacks are fixed to at least four corners of the caisson's working room ceiling, and a remote control device for the hydraulic jack is provided on the ground. A pneumatic caisson laying method characterized in that the inclination of the hydraulic jack is corrected by jacking up, or the hydraulic jack that is extended when the caisson is lowered is subjected to slow subsidence.
JP2010133610A 2010-06-11 2010-06-11 Pneumatic caisson settling method Pending JP2011256652A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010133610A JP2011256652A (en) 2010-06-11 2010-06-11 Pneumatic caisson settling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010133610A JP2011256652A (en) 2010-06-11 2010-06-11 Pneumatic caisson settling method

Publications (1)

Publication Number Publication Date
JP2011256652A true JP2011256652A (en) 2011-12-22

Family

ID=45473125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010133610A Pending JP2011256652A (en) 2010-06-11 2010-06-11 Pneumatic caisson settling method

Country Status (1)

Country Link
JP (1) JP2011256652A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014047523A (en) * 2012-08-31 2014-03-17 Kajima Corp Immersion method for underground structure
JP2015074942A (en) * 2013-10-10 2015-04-20 株式会社安藤・間 Sinking method for pneumatic caisson
CN106812148A (en) * 2017-03-18 2017-06-09 北京中岩大地科技股份有限公司 A kind of open caisson construction technique
CN114922215A (en) * 2022-05-30 2022-08-19 中铁大桥局集团有限公司 Underwater open caisson positioning device and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6393931A (en) * 1986-10-09 1988-04-25 Taisei Corp Settlement of structure
JPH07233532A (en) * 1994-02-25 1995-09-05 Toda Constr Co Ltd Caisson method
JP2005226386A (en) * 2004-02-16 2005-08-25 Ohmoto Gumi Co Ltd Excavator carrying-in and carrying-out method and excavator recovery system for pneumatic caisson

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6393931A (en) * 1986-10-09 1988-04-25 Taisei Corp Settlement of structure
JPH07233532A (en) * 1994-02-25 1995-09-05 Toda Constr Co Ltd Caisson method
JP2005226386A (en) * 2004-02-16 2005-08-25 Ohmoto Gumi Co Ltd Excavator carrying-in and carrying-out method and excavator recovery system for pneumatic caisson

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014047523A (en) * 2012-08-31 2014-03-17 Kajima Corp Immersion method for underground structure
JP2015074942A (en) * 2013-10-10 2015-04-20 株式会社安藤・間 Sinking method for pneumatic caisson
CN106812148A (en) * 2017-03-18 2017-06-09 北京中岩大地科技股份有限公司 A kind of open caisson construction technique
CN114922215A (en) * 2022-05-30 2022-08-19 中铁大桥局集团有限公司 Underwater open caisson positioning device and method

Similar Documents

Publication Publication Date Title
CN110631560B (en) Underground excavation interval monitoring and measuring method for subway station in dense building area
CN103243747B (en) Deviation rectifying method of prestressed concrete pipe pile foundation
CN110219326B (en) Reverse construction method one-column one-pile underwater verticality adjusting construction process
CN204286365U (en) Foundation pit side-wall displacement monitor
AU2020100838A4 (en) A kind of stress adjustment system for side walls of foundation pit in deep and unstable strata
JP2011256652A (en) Pneumatic caisson settling method
CN112576812B (en) Large-diameter long-distance linear jacking pipe jacking method
WO2016013508A1 (en) Pipe evaluation method, measurement device, and pipe evaluation system
CN104458425B (en) Grouting effect evaluation device for geotechnical engineering
CN210238595U (en) One-column one-pile underwater verticality adjusting construction device by reverse construction method
CN1884725A (en) Steel pipe stake positioning and plumbing device for underground architecture
CN108589775A (en) Prevent the construction method that underground pipe gallery generates relative settlement
CN208721064U (en) Real-time monitoring system across existing subway tunnel on a kind of city tunnel
CN110747876A (en) Auxiliary device for sinking in open caisson construction and operation method thereof
CN106140821A (en) Milling train tilts and the bearing calibration of skew
CN101806073A (en) Resistance-free load test device and method for upper extension section of foundation pile
JP4879719B2 (en) Method for measuring earth pressure on in situ ground
CN110700293A (en) Rotary excavating leading hole steel sheet pile cofferdam construction method under deep water sloping rock environment
CN110686918B (en) Simulation system and experimental method for stabilizing excavation surface of gas drainage control tunnel
CN100564697C (en) Horizontal top pipe ground treatment construction method
CN104878735A (en) Soil osmotic coefficient in-situ testing device and testing method thereof
CN211690479U (en) Pile top displacement recovery device
CN211201968U (en) Monitoring device for tunnel jacking construction guide
CN2915952Y (en) Underground building steel pipe column positioning and verticality adjusting device
CN107063178A (en) A kind of concrete level mark for installing displacement transducer and its elevation observation and computational methods

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20130125

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20131018

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20131029

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20140401