CN202644541U - Steel support structure for ultra-deep foundation pit construction in narrow field - Google Patents

Steel support structure for ultra-deep foundation pit construction in narrow field Download PDF

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Publication number
CN202644541U
CN202644541U CN2012202616071U CN201220261607U CN202644541U CN 202644541 U CN202644541 U CN 202644541U CN 2012202616071 U CN2012202616071 U CN 2012202616071U CN 201220261607 U CN201220261607 U CN 201220261607U CN 202644541 U CN202644541 U CN 202644541U
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CN
China
Prior art keywords
steel
support
foundation pit
steel support
bearing
Prior art date
Application number
CN2012202616071U
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Chinese (zh)
Inventor
谢惠庆
康清泉
黄旭
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成都市第四建筑工程公司
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Publication date
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Priority to CN2012202616071U priority Critical patent/CN202644541U/en
Application granted granted Critical
Publication of CN202644541U publication Critical patent/CN202644541U/en

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Abstract

The utility model relates to a steel support structure for an ultra-deep foundation pit construction in a narrow field. The steel support structure comprises a first support base and a second support base both of which are respectively arranged on two opposite sidewalls inside the foundation pit, wherein a steel support is arranged between the first support base and the second support base; tow ends of the steel support respectively serve as a fixed end and a movable end; the fixed end of the steel support is fixedly connected with a first support base; the movable end of the steel support is matched with the second support base in a sliding manner; and a jack is arranged between the movable end of the steel support and the sidewall of the foundation pit. As such the structure is adopted, and the jack arranged between the sidewall of the foundation pit and the movable end of the steel support is used for supporting, the steel support structure for the ultra-deep foundation pit construction in the narrow field, disclosed by the utility model, is convenient to pre-apply an axial force rapidly and is convenient to operate.

Description

The steel support structure of a kind of narrow place Super Deep Foundation Pit Construction
Technical field
The utility model relates to the fixed structure that a kind of steel supports, particularly the steel support structure of a kind of narrow place Super Deep Foundation Pit Construction.
Background technology
In recent years, along with China's rapid development of economy, the urban construction middle-high building, super highrise building and municipal engineering (road, bridge, subway etc.) emerge in multitude, deep-foundation pit engineering is more and more, multiple material handling method of deep foundation pit is widely applied, and multiple material handling method of deep foundation pit becomes difficult point and the emphasis of foundation construction.
The compound supporting method that the pattern foundation pit supporting structure of narrow place ultra-deep foundation pit adopts excavated by manual work deep-well stake hole, Prestressing anchor cable, spray anchor, steel to support more is constructed.
When the foundation ditch chin-deep, the soil on next door will collapse, and usually need to do space enclosing structure and avoid occurring such situation.Steel pipe support is exactly a kind of form wherein, and is concrete, does soldier pile or diaphragm wall in the foundation ditch both sides first, then withstands stake or the wall of these both sides with steel pipe.Usually, in order to guarantee construction safety, adopt some row's steel support structures, during construction, then the absolute altitude of cutting the earth to and supporting is first done steel and is supported, carry out after the steel support, down continue the soil of the face that digs down, existing steel supports and usually directly two ends is fixed on the triangular support base again, and its weak point is to operate when steel supports brace pre axial force inconvenience.
The utility model content
The technical problems to be solved in the utility model is to overcome the above-mentioned deficiency of prior art, the steel support structure of narrow place Super Deep Foundation Pit Construction more convenient to operate when a kind of brace pre axial force is provided.
For solving the problems of the technologies described above, the utility model provides following technical scheme: the steel support structure of a kind of narrow place Super Deep Foundation Pit Construction, comprise the first bearing and the second bearing that are arranged at respectively on interior two opposing sidewalls of foundation ditch, being provided with steel between described the first bearing and the second bearing supports, the two ends that described steel supports are respectively fixed end and movable end, the fixed end that described steel supports is fixedly connected with the first bearing, the movable end that described steel supports cooperates with the second bearing sliding, is provided with jack between the movable end that described steel supports and the sidewall of foundation ditch.
Adopt such structure, shore by the jack between the movable end that is arranged on the support of foundation pit side-wall and steel, be convenient to carry out fast brace pre axial force, easy to operate.
Preferably, described jack is hydraulic jack.
Preferably, the axially parallel of the thrust direction of described hydraulic jack and described steel support.
Preferably, the middle part that described steel supports is fixedly connected with support post, and the bottom of described support post is fixedly connected on the bottom of foundation ditch.
Preferably, the top of described steel support is provided with hanger.
Preferably, the quantity of described hanger is two.
Preferably, the fixed end of described steel support is welded on the first bearing.
Compared with prior art, the beneficial effects of the utility model are: shore by the jack between the movable end that is arranged on the support of foundation pit side-wall and steel, be convenient to carry out fast brace pre axial force, and easy to operate.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Mark among the figure: foundation ditch-1; Sidewall-1a; The first bearing-2; The second bearing-3; Steel supports-4; Fixed end-4a; Movable end-4b; Jack-5; Support post-6; Hanger-7.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Embodiment of the present utility model is not limited to following examples, all belongs within the protection domain of the present utility model in the various variations of making under the prerequisite that does not break away from the utility model aim.
Embodiment 1
As shown in Figure 1, the steel support structure of a kind of narrow place of the present embodiment Super Deep Foundation Pit Construction, comprise the first bearing 2 and the second bearing 3 that are arranged at respectively on foundation ditch 1 interior two opposing sidewalls 1a, be provided with steel between the first bearing 2 and the second bearing 3 and support 4, in order to shore two sidewall 1a of foundation ditch 1, the two ends of steel support 4 are respectively fixed end 4a and movable end 4b, the fixed end 4a of steel support 4 is fixedly connected with the first bearing 2, the fixed end 4a of steel support 4 is welded on the first bearing 2, supports 4 horizontal slips to prevent steel; Movable end 4b and second bearing 3 of steel support 4 are slidingly matched, the movable end 4b that is steel support 4 cooperates with the upper surface slide of the second bearing 3, be provided with jack 5 between the movable end 4b of steel support 4 and the sidewall 1a of foundation ditch 1, in the present embodiment, one end of jack 5 is fixedly connected with the sidewall 1a of foundation ditch 1, the other end of jack 5 is axially shored and brace pre axial force along steel support 4, and jack 5 is hydraulic jack, and the thrust direction of hydraulic jack and steel support 4 axially parallel.
Embodiment 2
As shown in Figure 1, in the steel support structure of a kind of narrow place of the present embodiment Super Deep Foundation Pit Construction, for the ease of lifting, top in steel support 4 is provided with hanger 7, the quantity of hanger 7 is two, and Central Symmetry is arranged at steel and supports 4 both sides respectively, makes lifting more steady.Support 4 middle part at steel and be fixedly connected with support post 6, the bottom of support post 6 is fixedly connected on the bottom of foundation ditch 1, in the situation that steel supports 4 spans is large, with fixedly steel support 4 of support post 6, in order to control its amount of deflection.
All the other structures see also embodiment 1.
In the present embodiment, steel is installed is supported 4 and to apply the process of brace pre axial force as follows: after the soil excavation of foundation ditch 1 puts in place, support 4 at the good first floor steel of ground elder generation assembly unit, then begin lifting, adopt the mobile crane lifting during lifting, after slinging the two ends of steel support 4 are put down gently on the first bearing 2 and the second bearing 3, steel plate spot welding in steel column and the hat beam on the fixed end 4a of steel support 4 and the first bearing 2 is in case the support level slip; The movable end 4b of steel support 4 adopts the hydraulic jack 5 of two 100t to apply steel and supports 4 pre-applied forces, supporting 4 bilateral symmetry at movable end 4b along steel pressurizes step by step, apply prestressing force and be 70% of design axial force of the supports, till pressure gauge reading is stable, and use the chock jam-pack, last mobile crane wall slowly descends, and removes the lifting cable wire, finishes installation.
The utility model is not limited to the aforesaid specific embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.

Claims (7)

1. the steel support structure of a narrow place Super Deep Foundation Pit Construction, it is characterized in that: comprise the first bearing (2) and the second bearing (3) that are arranged at respectively on interior two opposing sidewalls of foundation ditch (1) (1a), be provided with steel between described the first bearing (2) and the second bearing (3) and support (4), the two ends that described steel supports (4) are respectively fixed end (4a) and movable end (4b), the fixed end (4a) that described steel supports (4) is fixedly connected with the first bearing (2), the movable end (4b) that described steel supports (4) is slidingly matched with the second bearing (3), is provided with jack (5) between the movable end (4b) of described steel support (4) and the sidewall (1a) of foundation ditch (1).
2. the steel support structure of narrow place according to claim 1 Super Deep Foundation Pit Construction, it is characterized in that: described jack (5) is hydraulic jack.
3. the steel support structure of narrow place according to claim 2 Super Deep Foundation Pit Construction, it is characterized in that: the thrust direction of described hydraulic jack and described steel support the axially parallel of (4).
4. the steel support structure of narrow place according to claim 3 Super Deep Foundation Pit Construction, it is characterized in that: the middle part that described steel supports (4) is fixedly connected with support post (6), and the bottom of described support post (6) is fixedly connected on the bottom of foundation ditch (1).
5. the steel support structure of narrow place according to claim 4 Super Deep Foundation Pit Construction, it is characterized in that: the top that described steel supports (4) is provided with hanger (7).
6. the steel support structure of narrow place according to claim 5 Super Deep Foundation Pit Construction, it is characterized in that: the quantity of described hanger (7) is two.
7. the steel support structure of narrow place according to claim 6 Super Deep Foundation Pit Construction, it is characterized in that: the fixed end (4a) that described steel supports (4) is welded on the first bearing (2).
CN2012202616071U 2012-06-05 2012-06-05 Steel support structure for ultra-deep foundation pit construction in narrow field CN202644541U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012202616071U CN202644541U (en) 2012-06-05 2012-06-05 Steel support structure for ultra-deep foundation pit construction in narrow field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012202616071U CN202644541U (en) 2012-06-05 2012-06-05 Steel support structure for ultra-deep foundation pit construction in narrow field

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CN202644541U true CN202644541U (en) 2013-01-02

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103437366A (en) * 2013-08-19 2013-12-11 浙江博雷重型机床制造有限公司 Prestress loading device connecting part
CN104846831A (en) * 2015-04-23 2015-08-19 成都科创佳思科技有限公司 Steel support structure
CN105507331A (en) * 2015-12-24 2016-04-20 上海市基础工程集团有限公司 Steel support of automatic servo steel bracing jack
CN103452119B (en) * 2013-08-19 2016-05-11 浙江博雷重型机床制造有限公司 The prestressing force charger of pattern foundation pit supporting structure inner support system
CN105951847A (en) * 2016-06-29 2016-09-21 广州市设计院 Easy-assembly and disassembly foundation pit supporting structure and construction method
CN108824443A (en) * 2018-06-28 2018-11-16 云南建投基础工程有限责任公司 Precisely adjust the device and its loading method of foundation pit steel support brace pre axial force
CN109706939A (en) * 2019-01-14 2019-05-03 杭州江润科技有限公司 Deep basal pit prestressing combination bracing members and construction method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103437366A (en) * 2013-08-19 2013-12-11 浙江博雷重型机床制造有限公司 Prestress loading device connecting part
CN103452119B (en) * 2013-08-19 2016-05-11 浙江博雷重型机床制造有限公司 The prestressing force charger of pattern foundation pit supporting structure inner support system
CN103437366B (en) * 2013-08-19 2016-06-08 浙江博雷重型机床制造有限公司 The connection member of prestressing force charger
CN104846831A (en) * 2015-04-23 2015-08-19 成都科创佳思科技有限公司 Steel support structure
CN105507331A (en) * 2015-12-24 2016-04-20 上海市基础工程集团有限公司 Steel support of automatic servo steel bracing jack
CN105951847A (en) * 2016-06-29 2016-09-21 广州市设计院 Easy-assembly and disassembly foundation pit supporting structure and construction method
CN108824443A (en) * 2018-06-28 2018-11-16 云南建投基础工程有限责任公司 Precisely adjust the device and its loading method of foundation pit steel support brace pre axial force
CN108824443B (en) * 2018-06-28 2020-05-19 云南建投基础工程有限责任公司 Device for accurately adjusting pre-axial force of foundation pit steel support and loading method thereof
CN109706939A (en) * 2019-01-14 2019-05-03 杭州江润科技有限公司 Deep basal pit prestressing combination bracing members and construction method
CN109706939B (en) * 2019-01-14 2020-09-15 杭州江润科技有限公司 Deep foundation pit prestress combined steel support and construction method

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