JP2002115260A - Extension method for basement - Google Patents
Extension method for basementInfo
- Publication number
- JP2002115260A JP2002115260A JP2000310751A JP2000310751A JP2002115260A JP 2002115260 A JP2002115260 A JP 2002115260A JP 2000310751 A JP2000310751 A JP 2000310751A JP 2000310751 A JP2000310751 A JP 2000310751A JP 2002115260 A JP2002115260 A JP 2002115260A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- foundation
- wall
- basement
- underground
- 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.)
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、既設建築物の下
に地下階を増築する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for expanding a basement floor under an existing building.
【０００２】[0002]
【従来の技術】地価が高い都心部などの市街地では、建
物を建替える際に地上階の増築に加えて地下階も増築し
たいと希望する人が近年増加している。このような要求
に対しては、従来は既設の地下階は全て解体撤去し、一
旦土砂などで埋め戻して更地にしたのち、新たに山留め
壁を構築し、切梁など支保工を用いた掘削、地下構造躯
体の構築と云った手順で施工していた。2. Description of the Related Art In urban areas such as city centers where land prices are high, the number of people who wish to expand the basement floor in addition to the ground floor when rebuilding a building has increased in recent years. In response to such demands, all existing basement floors were conventionally dismantled and removed, backfilled with earth and sand, etc., and vacant land was rebuilt. Excavation and construction of the underground structure were carried out in the same procedure.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記従来の施
工方法では、既設地下階を解体する際に騒音・振動・
粉塵が発生する、既設地下階の解体に伴って産業廃棄
物（コンクリートがら）が発生する、すぐに掘り返す
ことになる埋め戻し土の手配・転圧・締固めなどの工事
が必要となり、費用の増大と工期の大幅な延びが避けら
れない、既設地下階の解体に伴う原位置地盤の撹乱に
より土圧が増加する、などと云った問題点があったの
で、これら問題点を解決する必要があった。However, according to the above-mentioned conventional construction method, noise, vibration, and noise are generated when the existing basement floor is dismantled.
Dust is generated, industrial waste (concrete waste) is generated due to the dismantling of the existing basement floor, and construction work such as arranging, compacting, compacting, etc. of backfill soil that will be dug up immediately is required. There were problems such as an increase in the construction period and a significant increase in the construction period, and an increase in earth pressure due to disturbance of the in-situ ground due to the demolition of the existing basement floor. there were.
【０００４】[0004]
【課題を解決するための手段】この発明は上記従来技術
の問題点を解決するためになされたもので、第１の発明
は、既設建築物の地下外壁の下に止水性を備えた山留め
壁を形成し、その山留め壁の内部または山留め壁より内
側の部位に山留め杭を配設し、既設建築物が杭基礎を備
えているときにはその基礎杭と連結された基礎梁部分を
除く底盤部を解体撤去し、既設建築物が基礎杭を備えな
い直接基礎のときには仮基礎杭を打設した後その仮基礎
杭の部分を除く底盤部を解体撤去し、撤去した底盤部位
から掘削して地下階増築空間を形成し、その部分に地下
階を増築することを特徴とする地下階増築方法である。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and a first invention is a mountain retaining wall provided with a waterproof property below an underground outer wall of an existing building. Forming a pile, and arranging a pile on the inside of the retaining wall or inside the retaining wall, and when the existing building has a pile foundation, remove the bottom except for the foundation beam connected to the foundation pile. Demolition and removal, when the existing building is a direct foundation without foundation piles, cast a temporary foundation pile, dismantle and remove the bottom except for the temporary foundation pile, excavate from the removed bottom part, and basement floor This is a basement floor extension method characterized by forming an extension space and adding a basement floor to that part.
【０００５】第２の発明は、前記第１の発明において掘
削を、山留め杭を支保工により支持して行うようにした
ことを特徴とする地下階増築方法である。According to a second aspect of the present invention, there is provided a method of extending an underground floor according to the first aspect, wherein the excavation is carried out by supporting a pile retaining pile with a support.
【０００６】[0006]
【発明の実施の形態】以下、この発明の実施形態を図面
に基づいて詳細に説明する。なお、この場合は図６に示
したように、地下２階の下に地下３階部分を増築する例
である。Embodiments of the present invention will be described below in detail with reference to the drawings. In this case, as shown in FIG. 6, this is an example in which a third basement is added below a second basement.
【０００７】〔第１の実施形態〕本発明の第１の実施形
態を図１〜図４に基づいて説明する。この第１の実施形
態の地下階増築方法は、地上階を取り壊した既設建築物
の地下階（例えば地下２階）の下にさらに比較的天井の
低い地下階を増築するときに有効な増築方法である。[First Embodiment] A first embodiment of the present invention will be described with reference to FIGS. The underground floor extension method according to the first embodiment is effective when an underground floor having a relatively low ceiling is further extended below the underground floor (for example, the second basement floor) of an existing building whose top floor has been demolished. It is.
【０００８】図１（Ｂ）などに示したように、既設建築
物の残した地下外壁１の下に止水性を備えた山留め壁７
を形成する。この山留め壁７は、地下外壁１それ自体
に、または地下外壁１の外側などに適宜の間隔（例え
ば、＿ｍ間隔）で開設する、地下外壁１下端の深さの図
示しない改良剤注入穴から、例えば高圧ジェットグラウ
トなどの工法によりセメントやモルタルなどの地盤改良
剤（硬化剤）を掘削予定底面６より深い位置まで注入
し、それを硬化させて地下外壁１の下に、地下外壁１よ
り幅広く形成する。なお、前記地盤改良剤は、後工程で
挿入設置する、例えばＨ型鋼からなる山留め杭８の下端
より深い部分は、その幅を狭めて注入しても良い。As shown in FIG. 1 (B) and the like, a mountain retaining wall 7 having waterproofness is provided under the underground outer wall 1 left by the existing building.
To form The mountain retaining wall 7 is formed at an appropriate interval (for example, _m interval) on the underground outer wall 1 itself or on the outside of the underground outer wall 1 from an improving agent injection hole (not shown) having a depth at the lower end of the underground outer wall 1. For example, a ground improvement agent (hardening agent) such as cement or mortar is injected to a position deeper than the planned bottom 6 to be excavated by a method such as high-pressure jet grout, and is hardened to form below the underground outer wall 1 and wider than the underground outer wall 1. I do. The ground improvement agent may be inserted and installed in a later step, for example, at a portion deeper than the lower end of the mountain retaining pile 8 made of H-shaped steel, the width thereof may be narrowed and injected.
【０００９】そして、地下外壁１のすぐ内側から既設建
築物の底盤３の基礎梁３Ａと、その下側に硬化形成した
山留め壁７とに掘削予定底面６を超える深さの山留め杭
挿入穴を掘り、そこに例えばＨ形鋼からなる山留め杭８
を挿入設置し、隙間に図示しないソイルモルタルを充填
して山留め杭８を山留め壁７に固着させる。[0009] Then, from just inside the underground outer wall 1, a pier pile insertion hole having a depth exceeding the planned excavation bottom surface 6 is formed in the foundation beam 3A of the bottom 3 of the existing building and the reinforced wall 7 formed below the foundation beam 3A. Digging, there is a retaining pile 8 made of, for example, H-section steel
And the gap is filled with soil mortar (not shown) to fix the mountain retaining pile 8 to the mountain retaining wall 7.
【００１０】なお、山留め杭８と基礎梁３との連結は、
例えば図４に示したようにして行われる。[0010] The connection between the retaining pile 8 and the foundation beam 3 is as follows.
For example, this is performed as shown in FIG.
【００１１】増築する既設建築物が複数の基礎杭９によ
り支持された杭基礎式構造物であり、且つ、掘削予定底
面６が比較的浅いときには、基礎杭９に支持されている
基礎梁３Ａの部分を残して底盤３の大部分を解体撤去
し、その部分から掘削予定底面６の深さまですぐさま掘
削して地下空間を広げ、そこに従来と同様の手法を用い
て新たに底盤５と、基礎梁３Ａを含む地下２階床４と、
Ｈ形鋼製の山留め杭８の内側に配置する新設地下外壁１
Ａとを構築すると共に、不要な基礎杭９を撤去して地下
３階を増築する（図２参照）。When the existing building to be added is a pile foundation type structure supported by a plurality of foundation piles 9 and the planned bottom 6 to be excavated is relatively shallow, the foundation beam 3A supported by the foundation piles 9 is formed. Most of the bottom 3 is dismantled and removed, leaving the part, and the underground space is expanded by immediately excavating from that part to the depth of the bottom 6 to be excavated. A second basement floor 4 including beams 3A,
New underground outer wall 1 placed inside H-shaped steel retaining pile 8
In addition to building A, unnecessary foundation piles 9 are removed and the third basement floor is expanded (see FIG. 2).
【００１２】また、増築する既設建築物が基礎杭９によ
り支持されていない直接基礎式構造物であり、且つ、掘
削予定底面６が比較的浅いときには、図３に示したよう
に複数の仮基礎杭９Ａを打設した後、仮基礎杭Ａ９に支
持されている基礎梁３Ａの部分を残して底盤３の大部分
を解体撤去し、その部分から掘削予定底面６の深さまで
すぐさま掘削して地下空間を広げ、そこに前記図２と同
様に新たに底盤５と、基礎梁３Ａを含む地下２階床４
と、新設地下外壁１Ａとを構築して地下３階を増築する
（山留め杭８は、この場合は山留め壁７のすぐ内側に設
けられている）。Further, when the existing building to be added is a direct foundation type structure which is not supported by the foundation pile 9 and the bottom surface 6 to be excavated is relatively shallow, as shown in FIG. After placing the pile 9A, most of the bottom plate 3 is dismantled and removed, excluding the portion of the foundation beam 3A supported by the temporary foundation pile A9, and excavation is immediately performed from the portion to the depth of the planned bottom 6 to be excavated. The space is expanded, and a bottom plate 5 and a second basement floor 4 including a foundation beam 3A are newly added thereto as in FIG.
And a new underground outer wall 1A to build a third basement floor (the retaining pile 8 is provided immediately inside the retaining wall 7 in this case).
【００１３】〔第２の実施形態〕本発明の第２の実施形
態を図５に基づいて説明する。この第２の実施形態の地
下階増築方法は、地上階を取り壊した既設建築物の地下
階（例えば地下２階）の下にさらに天井の高い地下階を
増築するときに有効な増築方法である。[Second Embodiment] A second embodiment of the present invention will be described with reference to FIG. The basement floor extension method according to the second embodiment is an effective extension method when an underground floor with an even higher ceiling is added below the basement floor (for example, the second basement floor) of an existing building whose top floor has been demolished. .
【００１４】地下２階の下に天井の高い地下３階を増築
するときには、掘削予定底面６の位置が深くなり、した
がって山留め杭８は掘削により露出する部分の長さが長
くなって撓み易くなるので、山留め壁７のすぐ内側に設
けた山留め杭８を例えば図５（Ａ）に示したように地下
２階床４から吊り下げたリング支保工１０により支持補
強しながら掘削する、図５（Ｂ）に示したように斜め切
梁１１により支持補強しながら掘削する、図５（Ｃ）に
示したようにアイランド工法の切梁１２により支持補強
しながら掘削する、などして山留め杭８が施工時に地下
室側に撓まないようにする。When the third basement floor with a high ceiling is added below the second basement floor, the position of the bottom surface 6 to be excavated is deepened, so that the excavation pile 8 has a longer portion exposed by excavation and is easily bent. Therefore, as shown in FIG. 5 (A), for example, as shown in FIG. 5 (A), a pier pile 8 provided immediately inside the pier wall 7 is excavated while being supported and reinforced by a ring supporter 10 suspended from the second basement floor 4. As shown in FIG. 5B, the excavation is performed while being supported and reinforced by the diagonally cut beam 11, and as shown in FIG. 5C, the excavation is performed while being supported and reinforced by the cut beam 12 of the island construction method. Do not bend to the basement side during construction.
【００１５】前記図５などのように山留め杭８を支持補
強して掘削した後、仮基礎杭９Ａ（あるいは基礎９）に
支持されている基礎梁３Ａの部分を残して底盤３の大部
分を解体撤去し、その部分から掘削予定底面６の深さま
で掘削して地下空間を広げ、そこに従来と同様の手法を
用いて底盤５と、基礎梁３Ａを含む地下２階床４と、山
留め杭８の内側に配置する新設地下外壁１Ａとを構築す
ると共に、不要な仮基礎杭９Ａ（または基礎杭９）を撤
去して地下３階を増築する（図２参照）。As shown in FIG. 5 and the like, after excavation while supporting and reinforcing the pile retaining pile 8, most of the bottom plate 3 is removed except for the portion of the foundation beam 3A supported by the temporary foundation pile 9A (or the foundation 9). Demolition and removal, excavation from that part to the depth of the planned bottom 6 to expand the underground space, using the same method as in the past, the base 5, the second basement floor 4 including the foundation beam 3A, and the pile retaining pile In addition to constructing a new underground outer wall 1A to be disposed inside the base 8 and removing unnecessary temporary foundation piles 9A (or foundation piles 9), the third basement floor is expanded (see FIG. 2).
【００１６】なお、本発明は上記実施形態に限定される
ものではないので、特許請求の範囲に記載の趣旨から逸
脱しない範囲で各種の変形実施が可能である。Since the present invention is not limited to the above embodiment, various modifications can be made without departing from the spirit of the present invention.
【００１７】例えば、揚水井戸（穴）を設けて地下水を
汲み上げ、地下水位を掘削予定底面６より下げて掘削を
行うようにしても良い。また、この地下水の汲み上げ
は、地盤改良剤を地盤に注入する前に行っても良いし、
山留め杭８を設置した後で行うようにしても良い。For example, a pumping well (hole) may be provided to pump up the groundwater, and the groundwater level may be lowered below the planned bottom surface 6 for drilling. Also, this pumping of groundwater may be performed before injecting the soil conditioner into the ground,
It may be performed after the mountain retaining pile 8 is installed.
【００１８】また、地下水を既存の基礎梁位置まで低下
させた後、既存の床の一部を解体し、既存床下の地盤を
水中掘削することも可能である。水中掘削した後、底盤
コンクリートを打設し、その後地下水を底盤コンクリー
ト位置まで低下させて地下室を作ると、切梁などの支保
工は不要で掘削が可能となる。After the groundwater is lowered to the existing foundation beam position, a part of the existing floor can be dismantled and the ground under the existing floor can be excavated underwater. After excavation in water, concrete is poured into the bottom, and then the groundwater is lowered to the level of the concrete in the basement to create a basement.
【００１９】[0019]
【発明の効果】以上説明したように、本発明は既設建築
物の地下階の大部分を残して地下階を増築する方法であ
るので、既設地下階を全て解体して一旦埋め戻し、その
後に地下階を構築する従来工法に比べ、騒音・振動・
粉塵の発生が少ない、産業廃棄物（コンクリートが
ら）の発生量が少ない、埋め戻し土の手配・転圧・締
固めなどの工事が不要となり、費用の大幅な削減と工期
の大幅な短縮が図れる、原位置地盤の撹乱に伴う土圧
の増加が少ない、などと云った顕著な効果がある。As described above, the present invention is a method of expanding an underground floor while leaving most of the underground floor of an existing building. Compared to the conventional method of constructing the basement floor, noise, vibration,
Low dust generation, low generation of industrial waste (concrete waste), no need to arrange backfill soil, compaction, compaction, etc., greatly reducing costs and shortening the construction period There is a remarkable effect that the increase of the earth pressure due to the disturbance of the in-situ ground is small.
【図１】 第１の実施形態を示す説明図であり、（Ａ）
は平面図、（Ｂ）は断面図である。FIG. 1 is an explanatory view showing a first embodiment, and FIG.
Is a plan view, and (B) is a sectional view.
【図２】 第１の実施形態により増築した地下階を示す
説明図である。FIG. 2 is an explanatory diagram showing a basement floor added according to the first embodiment.
【図３】 第１の実施形態において仮基礎杭を使用して
増築するときの説明図である。FIG. 3 is an explanatory diagram when an extension is performed using a temporary foundation pile in the first embodiment.
【図４】 第１の実施形態における基礎梁と山留め杭と
の連結要領を示す説明図である。FIG. 4 is an explanatory diagram showing a connection point between a foundation beam and a retaining pile according to the first embodiment.
【図５】 第２の実施形態を示す説明図であり、（Ａ）
は山留め杭をリング支保杭により支持した説明図、
（Ｂ）は山留め杭を斜め切梁により支持した説明図、
（Ｃ）は山留め杭をアイランド工法の切梁により支持し
た説明図である。FIG. 5 is an explanatory view showing a second embodiment, and FIG.
Is an illustration in which the retaining pile is supported by a ring support pile,
(B) is an explanatory view in which the retaining pile is supported by diagonally cut beams,
(C) is an explanatory view in which the mountain retaining pile is supported by the cut beam of the island construction method.
【図６】 増築の概要を示す説明図である。FIG. 6 is an explanatory diagram showing an outline of an extension.
１ （既設）地下外壁 １Ａ （新設）地下外壁 ２ （既設）地下１階床 ３ （既設）底盤 ３Ａ 基礎梁 ４ （新設）地下２階床 ５ （新設）底盤 ６ 掘削予定底面 ７ 山留め壁 ８ 山留め杭 ９ 基礎杭 ９Ａ 仮基礎杭 １０ リング支保工 １１ 斜め切梁 １２ アイランド工法の切梁 Reference Signs List 1 (existing) underground outer wall 1A (new) underground outer wall 2 (existing) 1st floor underground 3 (existing) bottom 3A foundation beam 4 (new) 2nd floor underground 5 (new) bottom 6 Excavated bottom 7 mountain retaining wall 8 retaining Pile 9 Foundation pile 9A Temporary foundation pile 10 Ring support 11 Diagonally cut beam 12 Cut beam of island method
───────────────────────────────────────────────────── フロントページの続き (72)発明者 浅香 美治 東京都港区芝浦一丁目２番３号 清水建設 株式会社内 Ｆターム(参考） 2D047 AA01 AB08 2E176 AA01 AA07 BB32 BB36 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Miji Asaka 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation F-term (reference) 2D047 AA01 AB08 2E176 AA01 AA07 BB32 BB36
Claims (2)
えた山留め壁を形成し、その山留め壁の内部または山留
め壁より内側の部位に山留め杭を配設し、既設建築物が
杭基礎を備えているときにはその基礎杭と連結された基
礎梁部分を除く底盤部を解体撤去し、既設建築物が基礎
杭を備えない直接基礎のときには仮基礎杭を打設した後
その仮基礎杭の部分を除く底盤部を解体撤去し、撤去し
た底盤部位から掘削して地下階増築空間を形成し、その
部分に地下階を増築することを特徴とする地下階増築方
法。1. A mountain retaining wall having waterproofness is formed below an underground outer wall of an existing building, and a mountain retaining pile is disposed inside the mountain retaining wall or at a portion inside the mountain retaining wall. When the foundation is provided, the bottom excluding the foundation beam connected to the foundation pile is dismantled and removed, and when the existing building is a direct foundation without foundation pile, the temporary foundation pile is cast and then A basement floor extension method characterized by dismantling and removing the bottom part except for the above-mentioned part, excavating from the removed bottom part part to form an underground floor extension space, and adding an underground floor to that part.
保工により支持して掘削を行うことを特徴とする請求項
１記載の地下階増築方法。2. The method according to claim 1, wherein the excavation is carried out by supporting the pile retaining pile with a support after the bottom portion is dismantled and removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000310751A JP2002115260A (en) | 2000-10-11 | 2000-10-11 | Extension method for basement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000310751A JP2002115260A (en) | 2000-10-11 | 2000-10-11 | Extension method for basement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002115260A true JP2002115260A (en) | 2002-04-19 |
Family
ID=18790648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000310751A Pending JP2002115260A (en) | 2000-10-11 | 2000-10-11 | Extension method for basement |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005002675A (en) * | 2003-06-12 | 2005-01-06 | Shimizu Corp | Method of evaluating timbering performance of composite earth retaining wall |
| CN102444142A (en) * | 2011-09-20 | 2012-05-09 | 新世纪建设集团有限公司 | Pile group column replacement expanded basement and construction method of same |
| CN103233477A (en) * | 2013-04-25 | 2013-08-07 | 温州天然工程勘察有限公司 | Method for pouring open type reinforced concrete support and baseboard floor in deep foundation pit supporting engineering |
| JP2013174049A (en) * | 2012-02-23 | 2013-09-05 | Taisei Corp | Extension method for earth retaining wall and earth retaining wall structure |
| CN108301635A (en) * | 2016-07-26 | 2018-07-20 | 朱奎 | The Basement reconstruction structure of bored pile foundation |
| CN108331367A (en) * | 2016-07-26 | 2018-07-27 | 朱奎 | The Basement reconstruction structure of raft foundation |
| CN110273432A (en) * | 2019-06-13 | 2019-09-24 | 广州穗岩土木科技股份有限公司 | A kind of existing main structure of subway station enlarging construction method |
| CN110616738A (en) * | 2019-09-12 | 2019-12-27 | 上海建工集团股份有限公司 | Underground space vertical building construction method and structure |
| CN111236311A (en) * | 2020-03-06 | 2020-06-05 | 华东建筑设计研究院有限公司 | Construction platform and construction method for underground space development of dense existing building group |
| CN112813983A (en) * | 2020-12-31 | 2021-05-18 | 长江勘测规划设计研究有限责任公司 | Cantilever beam-column system implemented synchronously with pit depth in pit and construction method |
| CN113513041A (en) * | 2021-03-22 | 2021-10-19 | 中铁第四勘察设计院集团有限公司 | Assembled multi-layer flat-top large-span pillar-free underground structure and open excavation construction method thereof |
| CN113718796A (en) * | 2021-09-30 | 2021-11-30 | 山东大学 | Underground structure system with foundation pit supporting function and construction method |
| CN114250791A (en) * | 2021-12-31 | 2022-03-29 | 浙江恒鸿建设有限公司 | Construction method of deep foundation pit support replacing system |
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2000
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005002675A (en) * | 2003-06-12 | 2005-01-06 | Shimizu Corp | Method of evaluating timbering performance of composite earth retaining wall |
| CN102444142A (en) * | 2011-09-20 | 2012-05-09 | 新世纪建设集团有限公司 | Pile group column replacement expanded basement and construction method of same |
| CN102444142B (en) * | 2011-09-20 | 2014-01-15 | 新世纪建设集团有限公司 | Pile group column replacement expanded basement and construction method of same |
| JP2013174049A (en) * | 2012-02-23 | 2013-09-05 | Taisei Corp | Extension method for earth retaining wall and earth retaining wall structure |
| CN103233477A (en) * | 2013-04-25 | 2013-08-07 | 温州天然工程勘察有限公司 | Method for pouring open type reinforced concrete support and baseboard floor in deep foundation pit supporting engineering |
| CN108301635A (en) * | 2016-07-26 | 2018-07-20 | 朱奎 | The Basement reconstruction structure of bored pile foundation |
| CN108331367A (en) * | 2016-07-26 | 2018-07-27 | 朱奎 | The Basement reconstruction structure of raft foundation |
| CN108331154A (en) * | 2016-07-26 | 2018-07-27 | 朱奎 | Basement reconstruction construction method with raft foundation building |
| CN108360561A (en) * | 2016-07-26 | 2018-08-03 | 朱奎 | The Basement reconstruction of raft foundation constructs |
| CN108360553A (en) * | 2016-07-26 | 2018-08-03 | 朱奎 | The construction method of Basement reconstruction construction with raft foundation building |
| CN110273432A (en) * | 2019-06-13 | 2019-09-24 | 广州穗岩土木科技股份有限公司 | A kind of existing main structure of subway station enlarging construction method |
| CN110616738A (en) * | 2019-09-12 | 2019-12-27 | 上海建工集团股份有限公司 | Underground space vertical building construction method and structure |
| CN111236311A (en) * | 2020-03-06 | 2020-06-05 | 华东建筑设计研究院有限公司 | Construction platform and construction method for underground space development of dense existing building group |
| CN111236311B (en) * | 2020-03-06 | 2024-04-09 | 华东建筑设计研究院有限公司 | Construction platform and construction method for developing underground space of dense existing building group |
| CN112813983A (en) * | 2020-12-31 | 2021-05-18 | 长江勘测规划设计研究有限责任公司 | Cantilever beam-column system implemented synchronously with pit depth in pit and construction method |
| CN112813983B (en) * | 2020-12-31 | 2022-07-22 | 长江勘测规划设计研究有限责任公司 | Cantilever beam-column system implemented synchronously with pit depth in pit and construction method |
| CN113513041A (en) * | 2021-03-22 | 2021-10-19 | 中铁第四勘察设计院集团有限公司 | Assembled multi-layer flat-top large-span pillar-free underground structure and open excavation construction method thereof |
| CN113718796A (en) * | 2021-09-30 | 2021-11-30 | 山东大学 | Underground structure system with foundation pit supporting function and construction method |
| CN114250791A (en) * | 2021-12-31 | 2022-03-29 | 浙江恒鸿建设有限公司 | Construction method of deep foundation pit support replacing system |
| CN114250791B (en) * | 2021-12-31 | 2023-03-28 | 浙江恒鸿建设有限公司 | Construction method of deep foundation pit support replacing system |
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