JP2023178939A - Calculation method of predicting bed settlement curve outside pit by pit excavation - Google Patents

Calculation method of predicting bed settlement curve outside pit by pit excavation Download PDF

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JP2023178939A
JP2023178939A JP2023027612A JP2023027612A JP2023178939A JP 2023178939 A JP2023178939 A JP 2023178939A JP 2023027612 A JP2023027612 A JP 2023027612A JP 2023027612 A JP2023027612 A JP 2023027612A JP 2023178939 A JP2023178939 A JP 2023178939A
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暁真 范
Xiaozhen Fan
長節 徐
Changjie Xu
智 丁
Zhi Ding
綱 魏
Gang Wei
禄鉅 梁
Luju Liang
麗莎 章
Lisha Zhang
昊宇 蒋
Haoyu Jiang
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Zhejiang University City College ZUCC
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Abstract

SOLUTION: A calculation method of predicting a bed settlement curve outside a pit by pit excavation includes: determination of pit section parameters and horizontal displacement important parameters of a support protective structure; determination of a horizontal displacement curve calculation formula of the support protective structure of a part deeper than any one of depth, on the basis of the horizontal displacement important parameters of the support protective structure; calculation of a settlement influence range at any one of depth; acquisition of a bed settlement curve at any one of depth outside the pit; and drawing of a bed settlement curve diagram.EFFECT: A calculation method of the present invention allows the calculation of a bed settlement curve at any one of depth outside a pit, taking into consideration a relation of deformation of a support protective structure by pit excavation and the settlement of surrounding soil, with a relatively correct calculation result, while requiring relatively few parameters to be known, and can be used simply, as a calculation formula is a clear calculation formula.SELECTED DRAWING: Figure 3

Description

本発明は、地下工事分野に関し、より正確には、ピット掘削によるピット外の地層沈降曲線を予測する計算方法に関する。 TECHNICAL FIELD The present invention relates to the field of underground construction, and more precisely to a calculation method for predicting a geological sedimentation curve outside a pit due to pit excavation.

都市地域では、土地資源の緊張により、ピット辺には、一般的には既存の構築物が存在する。ピット掘削による周辺地層の沈降差が一定の許容値を超えると、周辺の既存の構築物の破壊を引き起こす可能性があるため、どのようにしてピット掘削による隣の構築物への影響を評価し、ピット掘削によるピット外の地層沈降曲線を予測し、ピット掘削設計と施工プロセスの、周辺環境の変形への制御を実現するかは、工事においてずっと関心を寄せられてきた重点的な問題である。 In urban areas, due to land resource tensions, existing structures generally exist along pit edges. If the difference in sedimentation of the surrounding strata due to pit excavation exceeds a certain tolerance value, it may cause the destruction of existing structures in the surrounding area. Predicting the subsidence curve of the strata outside the pit due to excavation and controlling the deformation of the surrounding environment in the pit excavation design and construction process has long been a key issue in construction.

現在、ピット掘削による周辺地層の変形を予測する技術は、主に、経験式、有限要素法及び理論方法の三つの種類に分けることができる。しかしながら、この三種類の従来の技術には、それぞれ以下の不足が存在する。（１）経験式：異なる土層条件及び施工条件に対する適応性が比較的に悪く、精度が比較的に低く、提供できる情報量が比較的に少なく、ほとんどの従来の経験式が提供するのは、地表沈降包絡線にすぎず、保守的すぎるとともに、支持保護構造の変形と地層沈降との関連性を考慮できないため、ピット工事の変形制御にうまく用いることができない。（２）有限要素法：有限要素モデルの品質は、土体構成モデル及び土体パラメータの取り値に大きく依存し、高品質の構成モデル及び土体パラメータモデルの取得が比較的に困難であるため、応用上に比較的に大きい制限が存在する。（３）理論方法：従来の理論方法の欠点は、式が一般的に比較的に複雑であり、且つほとんどの理論方法が地表沈降曲線を計算することしかできず、異なる深さ地層の沈降曲線を計算できないため、提供する情報量が限られており、工事応用が容易ではないことである。 At present, techniques for predicting the deformation of surrounding strata due to pit excavation can be mainly divided into three types: empirical formulas, finite element methods, and theoretical methods. However, these three types of conventional techniques each have the following deficiencies. (1) Empirical formula: The adaptability to different soil layer conditions and construction conditions is relatively poor, the accuracy is relatively low, and the amount of information that can be provided is relatively small. , which is only a ground subsidence envelope, is too conservative and cannot take into account the relationship between the deformation of the supporting protection structure and the subsidence of the ground, so it cannot be used successfully for deformation control in pit construction. (2) Finite element method: The quality of the finite element model largely depends on the soil constitutive model and soil parameter values, and it is relatively difficult to obtain high-quality constitutive models and soil parameter models. , there are relatively large limitations on the application. (3) Theoretical methods: The disadvantages of traditional theoretical methods are that the formulas are generally relatively complex, and most theoretical methods can only calculate the surface subsidence curve, and the subsidence curves of strata at different depths. cannot be calculated, the amount of information provided is limited, and application to construction work is not easy.

以上をまとめると、現在、ピット掘削の変形制御がますます厳しくなっている現状に対して、簡単で利用可能であり且つ正確なピット掘削によるピット外の地層沈降曲線を予測する明示的な計算方法を提案し、ピット支持保護構造の合理的な設計、工事リスクの防止に対して、非常に重要な工事応用価値を有する。 To summarize the above, in view of the current situation where deformation control in pit excavation is becoming increasingly strict, there is an explicit calculation method that is easy, available, and accurate for predicting the formation subsidence curve outside the pit due to pit excavation. This proposal has very important construction application value for rational design of pit support protection structure and prevention of construction risks.

本発明は、従来の技術における不足を克服する目的で、ピット掘削によるピット外の地層沈降曲線を予測する計算方法を提供することである。 The present invention aims to overcome the deficiencies in the prior art by providing a calculation method for predicting the formation settlement curve outside the pit due to pit excavation.

第一の態様によれば、ピット掘削によるピット外の地層沈降曲線を予測する計算方法を提供し、このピット掘削によるピット外の地層沈降曲線を予測する計算方法は、
ピット断面パラメータ及びピット掘削による支持保護構造の水平変位重要パラメータを決定するステップＳ１と、
According to a first aspect, there is provided a calculation method for predicting a strata sedimentation curve outside the pit due to pit excavation, and the calculation method for predicting the strata sedimentation curve outside the pit due to pit excavation includes:
Step S1 of determining pit cross-sectional parameters and horizontal displacement important parameters of the supporting protection structure due to pit excavation;

第二の態様によれば、ピット掘削によるピット外の地層沈降曲線を予測する計算装置を提供し、このピット掘削によるピット外の地層沈降曲線を予測する計算装置は、第一の態様のいずれか一つに記載のピット掘削によるピット外の地層沈降曲線を予測する計算方法を実行するために用いられ、
ピット断面パラメータ及びピット掘削による支持保護構造の水平変位重要パラメータを決定するための第一の決定モジュールと、
According to the second aspect, there is provided a calculation device for predicting a strata sedimentation curve outside the pit due to pit excavation, and the calculation device for predicting the stratum sedimentation curve outside the pit due to pit excavation is based on one of the first aspects. used to carry out the calculation method for predicting the formation sedimentation curve outside the pit due to pit excavation, as described in
a first determination module for determining pit cross-sectional parameters and horizontal displacement critical parameters of the supporting protection structure due to pit excavation;

第三の態様によれば、コンピュータ記憶媒体を提供し、前記コンピュータ記憶媒体にコンピュータプログラムが記憶されており、前記コンピュータプログラムがコンピュータ上で運行される時、コンピュータに第一の態様のいずれか一つに記載のピット掘削によるピット外の地層沈降曲線を予測する計算方法を実行させる。 According to a third aspect, a computer storage medium is provided, a computer program is stored on the computer storage medium, and when the computer program is run on the computer, one of the first aspects is provided on the computer. The calculation method for predicting the geological sedimentation curve outside the pit due to pit excavation is executed.

第四の態様によれば、コンピュータプログラム製品を提供し、このコンピュータプログラム製品は、前記コンピュータプログラム製品がコンピュータ上で運行される時、コンピュータに第一の態様のいずれか一つに記載のピット掘削によるピット外の地層沈降曲線を予測する計算方法を実行させることを特徴とする。 According to a fourth aspect, there is provided a computer program product, which, when the computer program product is run on a computer, causes the computer to excavate a pit according to any one of the first aspects. The present invention is characterized by executing a calculation method for predicting the geological subsidence curve outside the pit.

本発明の有益な効果は、以下のとおりである。 The beneficial effects of the present invention are as follows.

（１）本発明による計算方法は、知る必要があるパラメータが比較的に少なく、且つ計算式が明示的計算式であり、簡単で利用可能である。 (1) The calculation method according to the present invention requires relatively few parameters to be known, and the calculation formula is an explicit calculation formula, making it simple and usable.

（２）本発明は、ピット掘削による支持保護構造の変形と周辺地層の沈降との関係を考慮し、計算結果が比較的に正確である。 (2) The present invention takes into consideration the relationship between the deformation of the support protection structure due to pit excavation and the subsidence of the surrounding strata, and the calculation results are relatively accurate.

（３）本発明は、ピット外のいずれかの深さにおける地層沈降曲線を計算することができる。 (3) The present invention can calculate the formation subsidence curve at any depth outside the pit.

（４）本発明は、簡単実用性と正確性を両立し、且つピット掘削によるピット外のいずれかの深さでの地層沈降曲線計算に用いることができ、ピット掘削の変形制御に有利であり、良好な普及応用価値を有する。 (4) The present invention is both simple and practical and accurate, and can be used to calculate a geological sedimentation curve at any depth outside the pit due to pit excavation, and is advantageous for controlling deformation during pit excavation. , has good popular application value.

本出願によるピット掘削による支持保護構造の水平変位曲線の概略図である。FIG. 3 is a schematic diagram of the horizontal displacement curve of the support protection structure due to pit excavation according to the present application; 本出願による予測の支持保護構造の水平変位及びｚｉ＝０ｍでの地層沈降の概略図である。FIG. 3 is a schematic diagram of the horizontal displacement of the supporting protection structure and the subsidence of the formation at z i =0 m as predicted by the present application; 本出願による予測の支持保護構造の水平変位及びｚｉ＝３ｍでの地層沈降の概略図である。FIG. 2 is a schematic diagram of the horizontal displacement of the supporting protection structure and the subsidence of the formation at z i =3 m as predicted by the present application; 本出願による予測の支持保護構造の水平変位及びｚｉ＝７ｍでの地層沈降の概略図である。FIG. 3 is a schematic diagram of the horizontal displacement of the supporting protection structure and the subsidence of the formation at z i =7 m as predicted by the present application;

以下、実施例を併せて本発明についてさらに記述する。下記実施例の説明は、本発明の理解を支援するためのものに過ぎない。指摘すべきものとして、当業者にとって、本発明の原理を逸脱することなく、本発明にいくつかの修飾を加えることもでき、これらの改良と修飾も本発明の特許請求の保護範囲に属する。 The present invention will be further described below along with examples. The following description of the examples is only to assist in understanding the invention. It should be pointed out that those skilled in the art may make certain modifications to the present invention without departing from the principles of the invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

＜実施例１＞
ピット掘削によるピット外の地層沈降曲線を予測する計算方法は、以下を含む。 <Example 1>
Calculation methods for predicting the geological sedimentation curve outside the pit due to pit excavation include the following:

ステップＳ１、ピット断面パラメータ及びピット掘削による支持保護構造の水平変位重要パラメータを決定し、ここで、支持保護構造は、支持保護杭又は支持保護壁であってもよい。 Step S1, determining the pit cross-section parameters and the horizontal displacement important parameters of the supporting protection structure due to pit excavation, where the supporting protection structure may be a supporting protection pile or a supporting protection wall;

ステップＳ５、Ｓ４におけるいずれか一つの深さｚｉにおける地層沈降曲線に基づいて、対応する地層沈降曲線図を描画する。 Based on the geological subsidence curve at one of the depths z i in steps S5 and S4, a corresponding geological subsidence curve diagram is drawn.

例示的に、図２～図４において、ｚｉ＝０ｍの場合、ａ１＝－５．６１４×１０－４で、ｂ１＝１．１１９×１０－２で、ｃ１＝１．２１０×１０－２で、ａ２＝－６．２４２×１０－４で、ｂ２＝１．２４５×１０－２で、ｃ２＝５．８５７×１０－３で、ｘｉ＿ｒｅｆ＝３８．８ｍであり、
ｚｉ＝３ｍの場合、ａ１＝－５．６１４×１０－４で、ｂ１＝７．８２５×１０－３で、ｃ１＝４．０６３×１０－２で、ａ２＝－６．２４２×１０－４で、ｂ２＝８．７０１×１０－３で、ｃ２＝３．７５８×１０－２で、ｘｉ＿ｒｅｆ＝２６．８ｍであり、
ｚｉ＝７ｍの場合、ａ１＝－５．６１４×１０－４で、ｂ１＝３．３３４×１０－３で、ｃ１＝６．２９４×１０－２で、ａ２＝－６．２４２×１０－４で、ｂ２＝３．７０８×１０－３で、ｃ２＝６．２４０×１０－２で、ｘｉ＿ｒｅｆ＝１０．８ｍである。 For example, in FIGS. 2 to 4, when z i =0m, a 1 =-5.614×10 −4 , b 1 =1.119×10 −2 , and c 1 =1.210× 10 -2 , a 2 = -6.242x10 -4 , b 2 = 1.245x10 -2 , c 2 = 5.857x10 -3 , and x i_ref = 38.8 m. ,
When z i =3m, a 1 =-5.614×10 −4 , b 1 =7.825×10 −3 , c 1 =4.063×10 −2 , a 2 =−6. 242×10 −4 , b 2 =8.701×10 −3 , c 2 =3.758×10 −2 , x i_ref =26.8 m,
When z i =7m, a 1 =-5.614×10 −4 , b 1 =3.334×10 −3 , c 1 =6.294×10 −2 , a 2 =−6. 242×10 −4 , b 2 =3.708×10 −3 , c 2 =6.240×10 −2 , and x i_ref =10.8 m.

以上をまとめると、従来の技術と比較すると、本発明は、知る必要があるパラメータが比較的に少なく、且つ計算式が明示的計算式であり、簡単で利用可能である。また、本発明は、ピット掘削による支持保護構造の変形と周辺地層の沈降との関係を考慮し、計算結果が比較的に正確である。なお、本発明は、ピット外のいずれかの深さにおける地層沈降曲線を計算することができる。そのため、本発明は、簡単実用性と正確性を両立し、且つピット掘削によるピット外のいずれかの深さでの地層沈降曲線計算に用いることができ、ピット掘削の変形制御に有利であり、良好な普及応用価値を有する。 To summarize the above, compared to the conventional techniques, the present invention requires relatively few parameters to be known, and the calculation formula is an explicit calculation formula, making it simple and usable. Furthermore, the present invention takes into consideration the relationship between the deformation of the support protection structure due to pit excavation and the subsidence of the surrounding strata, and the calculation results are relatively accurate. Note that the present invention can calculate the geological subsidence curve at any depth outside the pit. Therefore, the present invention has both simple practicality and accuracy, and can be used to calculate a geological sedimentation curve at any depth outside the pit due to pit excavation, and is advantageous for controlling deformation of pit excavation. It has good popular application value.

１ 地表
２ 支持保護構造
３ 支持保護構造の頂部水平変位
４ 支持保護構造の水平変位曲線
５ 支持保護構造の最大水平変位
６ ピットピット底部
７ 支持保護構造底部 1 Ground surface 2 Support and protection structure 3 Horizontal displacement of the top of the support and protection structure 4 Horizontal displacement curve of the support and protection structure 5 Maximum horizontal displacement of the support and protection structure 6 Pit bottom 7 Bottom of the support and protection structure

Claims (8)

ピット掘削によるピット外の地層沈降曲線を予測する計算方法であって、
ピット断面パラメータ及びピット掘削による支持保護構造の水平変位重要パラメータを決定するステップＳ１と、
を含むことを特徴とするピット掘削によるピット外の地層沈降曲線を予測する計算方法。 A calculation method for predicting a geological sedimentation curve outside a pit due to pit excavation,
Step S1 of determining pit cross-sectional parameters and horizontal displacement important parameters of the supporting protection structure due to pit excavation;
A calculation method for predicting a geological sedimentation curve outside a pit due to pit excavation, characterized by including the following. ピット掘削によるピット外の地層沈降曲線を予測する計算装置であって、請求項１～５のいずれか１項に記載のピット掘削によるピット外の地層沈降曲線を予測する計算方法を実行するために用いられ、
ピット断面パラメータ及びピット掘削による支持保護構造の水平変位重要パラメータを決定するための第一の決定モジュールと、
A calculation device for predicting a sedimentation curve of strata outside the pit due to pit excavation, for carrying out the calculation method for predicting a sedimentation curve of strata outside the pit due to pit excavation according to any one of claims 1 to 5. used,
a first determination module for determining pit cross-sectional parameters and horizontal displacement critical parameters of the supporting protection structure due to pit excavation;
コンピュータ記憶媒体であって、前記コンピュータ記憶媒体にコンピュータプログラムが記憶されており、前記コンピュータプログラムがコンピュータ上で運行される時、コンピュータに請求項１～５のいずれか１項に記載のピット掘削によるピット外の地層沈降曲線を予測する計算方法を実行させる、ことを特徴とするコンピュータ記憶媒体。 A computer storage medium, wherein a computer program is stored in the computer storage medium, and when the computer program is run on the computer, the computer is operated by the pit excavation according to any one of claims 1 to 5. A computer storage medium for executing a calculation method for predicting a geological sedimentation curve outside a pit. コンピュータプログラム製品であって、前記コンピュータプログラム製品がコンピュータ上で運行される時、コンピュータに請求項１～５のいずれか１項に記載のピット掘削によるピット外の地層沈降曲線を予測する計算方法を実行させる、ことを特徴とするコンピュータプログラム製品。 A computer program product, when the computer program product is run on a computer, the calculation method for predicting a geological subsidence curve outside a pit due to pit excavation according to any one of claims 1 to 5 is executed on the computer. A computer program product characterized by being executed.
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