CN109056746A - The design and construction method of rectangle active well supporting construction can be recycled in a kind of flexible compound assembled - Google Patents
The design and construction method of rectangle active well supporting construction can be recycled in a kind of flexible compound assembled Download PDFInfo
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- CN109056746A CN109056746A CN201811095566.1A CN201811095566A CN109056746A CN 109056746 A CN109056746 A CN 109056746A CN 201811095566 A CN201811095566 A CN 201811095566A CN 109056746 A CN109056746 A CN 109056746A
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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
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Abstract
The present invention relates to the standardized designs construction methods that rectangle active well supporting construction can be recycled in a kind of flexible compound assembled, include the following steps: (one) miniature supporting pile driving construction；(2) stake top crown beam is constructed；(3) rectangle active well excavates, panel, waist rail installation, side wall high polymer grouting closure construction；(4) successively the construction of rectangle active well supporting construction is completed in vertical layered excavation, repetition step (3), construction to projected depth；(5) supporting construction completes that, with the beginning of the work of backfill, the recovery operation of supporting construction can be carried out using after function.The supporting structure system standardized designs construction that the present invention constructs, a set of supporting construction can satisfy the construction needs of the most rectangle active wells in an area, have many advantages, such as safe and reliable, quick construction, technologically advanced, recyclable recycling do, economic indicator it is superior, development and application prospect is considerable.
Description
Technical field
The invention belongs to the rectangle active well excavation supporting technology necks in the infrastructure such as building, water conservancy, mine, municipal administration
Domain specifically relates to the recyclable rectangle work of flexible compound assembled that above-mentioned field locally needs to carry out rectangle active well excavation supporting
The standardized designs construction method of well supporting construction.
Background technique
Since founding of New, the infrastructure constructions such as China's building, water conservancy, mine, municipal administration achieve highly visible
Achievement.During underground space utilization, mining mineral resource, especially in city planting ductwork construction and maintenance process, often need
Rectangle active well excavation supporting is carried out, its main feature is that rectangle excavates section 7m or so, depth is usually no more than 10m, Ke Nengcheng
It is leaked or underground water perplexs, it is short using the time.Along with the technology in geotechnical engineering field, machinery and civil engineering material etc.
Development, slope retaining technology have obtained effective development, soil nail wall, composite soil nailing wall, diaphram wall, campshed have correspondingly occurred
The supporting structure systems form such as supporting, pile-anchor retaining.It at the same time, is control underground water or leakage to rectangle active well side slope
Supporting and the influence of underground construction need to also consider that water-stop curtain is arranged in support system or be aided with dewatering measure.Especially
Level of ground water is higher, in the limited situation in slope space, pattern foundation pit supporting structure must consider to take the undergrounds such as precipitation or sealing simultaneously
Water process measure is just able to satisfy construction needs.In comparison, it is small to excavate space for rectangle active well, using traditional supporting construction,
Construction pauses more so that the construction period is long, and cost is high, and the influence to surrounding enviroment increases, in addition, being preferably control because seeping
Rectangle active well side wall creep caused by leakage and underground water needs further to improve the sealing and control water function of supporting construction, makes
The cost for obtaining rectangle active well supporting construction further increases.But from the angle of Technological Economy cost, rectangle active well branch
Interim measure necessary to shield is constructed as a kind of underground foundation, service life are usually no more than 1 month, are constructed in underground foundation
After discarded or removed, using traditional supporting construction, the construction period also close to 1 month, rectangle active well branch nurse
The cost of journey is just very expensive.
In current architecture engineering material, the processing performance of steel is preferable, excellent in mechanical performance, in civil engineering
To being widely applied.At the same time, high polymer grouting technology is that the foundation to grow up the 1970s quickly adds
Gu technology.For the technology by injecting high polymer material into ground, the volume after being chemically reacted using high polymer material is fast
Speed expansion and the quickly characteristic of cementation solidifying achieve the purpose that consolidated subsoil, filling is come to nothing or lift structure decanting zone.This patent
The characteristic research of mechanics and processable characteristic and high polymer grouting technology based on fashioned iron, has invented a kind of flexible compound assembled
The standardized designs construction method of recyclable rectangle active well supporting construction is the square of the industries such as building, water conservancy, mine, municipal administration
Shape active well excavation provides completely new support technology, and short time limit, low cost, recovery value is high, and high-frequency can repeat benefit
With.The country yet there are no the relevant report of the excavation supporting structure combined about rectangle active well high polymer grouting at present.
Summary of the invention
The present invention for building, water conservancy, mine, rectangle active well excavation supporting in municipal works growth requirement and mesh
Deficiency existing for preceding support technology has invented a kind of standardization of recyclable rectangle active well supporting construction of flexible compound assembled
Design and construction method.The present invention for the first time for the first time use supporting construction standardized designs theory, introduce high polymer grouting technology with
Technique can be recycled in assembled, expansive force, quick cementing hardening and the sealing characteristic provided by high polymer grouting technology, to rectangle
The creep of the active well side wall soil body and leakage control effectively, and based on earth pressure theory research and development；In construction technology
On, by giving full play to the excellent mechanics of fashioned iron and processing performance, the material property of high polymer technology and outstanding operating procedure,
Realize purpose of design of the invention.It can be rapidly completed using the invention to the rectangle work in building, water conservancy, mine, municipal works
The excavation supporting work for making well, truly realizes and completes the mission as a temporary work, and by square
The recycling of shape active well supporting construction, greatly reduces support cost, is the medium rectangle active well of above-mentioned all kinds of engineerings
Excavation supporting provides technologically advanced, safe and reliable, the superior new method of economic indicator.
The technical scheme adopted by the invention is as follows:
The standardized designs construction method of rectangle active well supporting construction can be recycled in a kind of flexible compound assembled, is provided according to correlation
After material completes calculating and design work, then the construction of supporting construction is carried out, work progress specifically comprises the following steps:
(1) the miniature supporting pile driving construction of fashioned iron, the specific steps of which are as follows:
(1) according to design requirement, the most rectangle active well supportings for meeting somewhere the miniature support pile processing of fashioned iron: are selected
The fashioned iron needed carries out miniature support pile processing, the processing including crown beam mounting hole, waist rail mounting hole and recovery holes；
(2) miniature supporting pile driving construction: in specified ground location, the pile hole construction of miniature support pile is completed using drilling machine, is applied
The good grooving precision of strict control during work, including plane positioning precision and slot vertical precision；
(3) pony support and plane positioning leveling block, the miniature supporting that will accurately process implantable miniature support pile: are utilized
The determining stake holes position of stake implantation, meets the location and installation required precision of design；
(4) it backfill on the outside of miniature support pile: is backfilled using the material for being suitble to stratum to need, to guarantee miniature support pile periphery
The stabilization of the soil body, backfilling material are low-grade concrete, sandstone and high molecular material；
(2) stake top crown beam is constructed, the specific steps of which are as follows:
(1) processing of stake top crown beam: according to rectangle active well support structure design as a result, the accurately installation of processing stake top crown beam
Hole, with facilitate stake top crown beam with the bolt of miniature support pile connect；
(2) the splicing installation of stake top crown beam: after miniature supporting pile driving construction, before active well excavation of foundation pit, level is used first
Instrument controls the absolute altitude of stake top crown beam, and then tentatively fix to its position, then uses high-strength bolt by stake top
It is fixedly connected at the top of crown beam and miniature support pile；
(3) rectangle active well excavates, panel, waist rail installation, side wall high polymer grouting closure construction, the specific steps of which are as follows:
(1) 0.5~1m of rectangle active well stage excavation, the side wall within the scope of cutting depth carry out panel installation protection, and panel can
To be bolted using steel facing, precast concrete facade panel or hard plank with miniature support pile；
(2) high polymer grouting after panel, grouting amount are subject to panel and combine closely with the side wall soil body；
(3) waist rail is installed, and after being excavated to setting absolute altitude, carries out waist rail installation, waist rail is connected by screw bolts with miniature support pile；
(4) successively vertical layered excavation, repetition step (3) are constructed to rectangle active well design work shaft bottom absolute altitude, that is, are completed
The construction of rectangle active well supporting construction can be recycled in flexible compound assembled, when necessary, according to specific use needs, is preced in stake top
The corresponding position setting of beam, waist rail is to support girder steel, with the rigidity and stability of enhancing structure system；
(5) supporting construction completes that, with the beginning of the work of backfill, the recycling work of supporting construction can be carried out using after function
Make, specific recycling step is as follows:
(1) with the progress of backfilling working, panel, waist rail are gradually recycled in layering；
(2) when being backfilled to earth's surface position, start to recycle stake top crown beam and miniature support pile.
Compared with the excavation supporting technology of existing rectangle active well, the invention has the following advantages that
(1) the use function for the rectangle active well excavation supporting structure that the art of this patent proposes embodies gib work well
The characteristics of journey engineering: safe and reliable, technologically advanced, economic indicator is superior.It is safe during guaranteeing Underground Construction temporarily to arrange
It applies, is securely and reliably primary factor, technologically advanced, superior economic indicator is the superiority and inferiority for evaluating rectangle active well excavation supporting structure
Safe criterion.
(2) material property plays perfect, sufficiently by the mechanics of fashioned iron and processing performance, the rapid expanding of high polymer material,
Quick cementation solidifying and sealing characteristic organically combine, and structure power transmission force way is clear, structure is safe and reliable.
(3) quick construction is not required to health.Work in every can work continuously to Non-intermittent, quick construction.It is especially high poly-
Object material forms 90% or so intensity after the reaction in 15 minutes, be not required to health, compared with traditional supporting structure system,
It can save for 40% or more construction period.
(4) overall economic efficiency has more advantage.Compared with traditional support technology, rectangle work is can be recycled in flexible compound assembled
The maximum feature for making well supporting construction is that foundation pit service stage is safe and reliable, and the standardized design structure, is suitable for solving
Areal is with whole excavation supporting problems of class rectangle active well, while subsequent recovery value is high, and reusable, and
Save a large amount of construction period.
Therefore, the standardized designs that rectangle active well supporting construction can be recycled in the flexible compound assembled that the present invention researches and develops are applied
Work method has a clear superiority in the excavation supporting technology of the rectangle active well in building, water conservancy, mine, municipal works.With
The support technology of existing rectangle active well is compared, and the standardization of rectangle active well supporting construction can be recycled in flexible compound assembled
Design and construction method is a whole set of completely new technology again, is mainly manifested in:
(1) completely new excavation supporting Structural design idea: in rectangle active well excavation supporting structure, supporting construction is used for the first time
Standardized designs theory, introducing high polymer grouting technology and assembled can be recycled technique, by the rapid expanding of high polymer material,
Quick cementation solidifying and sealing characteristic, completion control the soil body creep of side wall, the rectangle work being more suitable in municipal works
Make well and excavates needs.
(2) division of labor of structural system stress is clear: flexible compound assembled can be recycled rectangle active well and standardize supporting construction
The structure stress division of labor is clear in system.The toughness of high polymer material has played the effect of " soft " well, fills and has made face up
Stiffness difference between plate and the side wall soil body mitigates the stress mutation of miniature support pile, panel and the side wall soil body, and plays simultaneously
The anti-lateral creep effect for blending the control soil body of seam areas；The components such as miniature support pile, crown beam, waist rail play " rigid " jointly
Effect, undertake component of soil pressure itself and have uniform in material, isotropism, mechanical index is clear, and Structure Calculation is more reasonable
Reliably.And effective control of soil pressure, horizontal distortion can be realized by adjusting waist rail spacing.
(3) side slope side wall anti-seepage effect is obvious, with strong points.During the earth excavation of rectangle active well, by opening
The direct exposure of digging process, using rapid expanding of the high polymer material between the side wall soil body and structural system, formation has anti-
The high polymer surface layer of backwater function is seeped, while carrying out reinforcement using Weak points of the high polymer to the side wall soil body, so that structure is all
It is relatively uniform to enclose the soil body, apparent weak link is not present.
(4) structure rate of recovery height, high recycling rate: flexible compound assembled can be recycled rectangle active well and standardize supporting
The steel member of standardized production can be used in most components of structural system, changes a supporting construction in the past and plays use
Function, that is, outcast situation, this supporting construction is after having played using function, and not only the rate of recovery is high, but also recycles and reuse
Rate is high.
In conclusion the present invention no matter design concept from the excavation supporting structure of rectangle active well, force-mechanism, side wall
Recycling of anti-seepage effect or structural system etc. is all significantly different with existing similar support technology, has safety can
It leans on, quick construction, technologically advanced, recyclable recycling, the advantages that economic indicator is superior, and is successfully applied to rectangle active well
Support engineering, development and application prospect is considerable.
Detailed description of the invention
The miniature support pile floor plan of Fig. 1 rectangle active well；
Rectangle active well supporting construction elevation can be recycled in Fig. 2 flexible compound assembled；
Rectangle active well supporting construction sectional view can be recycled in Fig. 3 flexible compound assembled；
Rectangle active well supporting construction stage drawing can be recycled in Fig. 4 flexible compound assembled；
Appended drawing reference is as follows:
The miniature support pile of 1-, 2- crown beam mounting hole, 3- waist rail mounting hole, 4- recovery holes, the ground 5-, 6- stake holes, 7- backfilling material,
8- crown beam, 9- bolt, 10- panel, 11- waist rail, 12- high polymer grouting, 13- active well bottom.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
The standardized designs construction method of rectangle active well supporting construction, feature can be recycled in a kind of flexible compound assembled
It is, in the design of rectangle active well excavation supporting, uses supporting construction standardized designs theory for the first time, introduce high polymer grouting
Technique can be recycled in technology and assembled, by the rapid expanding of high polymer material, quick cementation solidifying and sealing characteristic, complete
The creep of the rectangle active well side wall soil body is controlled, the rectangle active well being more suitable in municipal works excavates needs.According to
After related data completes calculating and design work, then carry out the construction of supporting construction.Work progress specifically comprises the following steps:
(1) the miniature supporting pile driving construction of fashioned iron, the specific steps of which are as follows:
(1) the miniature support pile 1 of fashioned iron is processed: according to design requirement, selecting the most rectangle active well branch for meeting somewhere
The fashioned iron that shield needs carries out miniature support pile processing, the processing including crown beam mounting hole 2, waist rail mounting hole 3 and recovery holes 4.
(2) miniature supporting pile driving construction: in specified 5 position of ground, according to the planar dimension of rectangle active well, measuring mini pile
Behind the accurate stake position of supporting 1, is constructed, applied every the stake holes 6 that a dozen one jump manual labour skills complete miniature support pile using drilling machine
The good grooving precision of strict control during work, including plane positioning precision and slot vertical precision.
(3) implantable miniature support pile 1: utilizing pony support and plane positioning leveling block, accurately micro- by what is processed
The determining stake holes position of type support pile implantation, meets the location and installation required precision of design.
(4) it backfills: being backfilled using the material for being suitble to stratum to need, to guarantee miniature supporting on the outside of miniature support pile 1
The stabilization of the stake periphery soil body, backfilling material 7 are low-grade concrete, sandstone and high molecular material.
(2) stake top crown beam 8 is constructed, the specific steps of which are as follows:
(1) processing of stake top crown beam: according to rectangle active well support structure design as a result, the accurately installation of processing stake top crown beam 8
Hole, to facilitate stake top crown beam to connect with the bolt 9 of miniature support pile；
(2) the splicing installation of stake top crown beam 8: after miniature support pile 1 is constructed, before active well excavation of foundation pit, water is used first
Quasi- instrument controls the absolute altitude of stake top crown beam 8, and then tentatively fix to its position, then will using high-strength bolt 9
It is fixedly connected at the top of stake top crown beam and miniature support pile 1；
(3) rectangle active well excavates, and panel 10, waist rail 11 are installed, 12 closure construction of side wall high polymer grouting, specific steps
It is as follows:
(1) 0.5~1m of rectangle active well stage excavation, the side wall within the scope of cutting depth carry out the installation protection of panel 10, panel
It can be bolted using steel facing, precast concrete facade panel or hard plank with miniature support pile.
(2) high polymer grouting 12 after panel, grouting amount are subject to panel and combine closely with the side wall soil body.
(3) waist rail 11 is installed, and after being excavated to setting absolute altitude, is carried out waist rail 11 and is installed, waist rail 11 and miniature support pile 1 use
Bolt 9 connects.
(4) successively vertical layered excavation, repetition step (3) are constructed to 13 absolute altitude of rectangle active well design work shaft bottom,
Completing flexible compound assembled can be recycled the construction of rectangle active well supporting construction, when necessary, according to specific use needs,
The corresponding position setting of stake top crown beam, waist rail is to support girder steel, with the rigidity and stability of enhancing structure system.
(5) supporting construction completes that, with the beginning of the work of backfill, returning for supporting construction can be carried out using after function
Knock off work, specific recycling step is as follows:
(1) with the progress of backfilling working, panel 10, waist rail 11 are gradually recycled in layering.
(2) when being backfilled to earth's surface position, start to recycle stake top crown beam 8 and miniature support pile 11.
Obviously, above embodiment is only intended to clearly illustrate example, and does not limit the embodiments.
For those of ordinary skill in the art, other various forms of variations can also be made on the basis of the above description
Or it changes.There is no necessity and possibility to exhaust all the enbodiments.And obvious variation extended from this
Or it changes among still in the protection scope of this patent.
Claims (1)
1. a kind of design and construction method that rectangle active well supporting construction can be recycled in flexible compound assembled, which is characterized in that root
After completing calculating and design work according to related data, then the construction of supporting construction is carried out, work progress specifically comprises the following steps:
(1) the miniature supporting pile driving construction of fashioned iron, the specific steps of which are as follows:
(1) according to design requirement, the most rectangle active well supportings for meeting somewhere the miniature support pile processing of fashioned iron: are selected
The fashioned iron needed carries out miniature support pile processing, the processing including crown beam mounting hole, waist rail mounting hole and recovery holes；
(2) miniature supporting pile driving construction: in specified ground location, the pile hole construction of miniature support pile is completed using drilling machine, is applied
The good grooving precision of strict control during work, including plane positioning precision and slot vertical precision；
(3) pony support and plane positioning leveling block, the miniature supporting that will accurately process implantable miniature support pile: are utilized
The determining stake holes position of stake implantation, meets the location and installation required precision of design；
(4) it backfill on the outside of miniature support pile: is backfilled using the material for being suitble to stratum to need, to guarantee miniature support pile periphery
The stabilization of the soil body, backfilling material are low-grade concrete, sandstone and high molecular material；
(2) stake top crown beam is constructed, the specific steps of which are as follows:
(1) processing of stake top crown beam: according to rectangle active well support structure design as a result, the accurately installation of processing stake top crown beam
Hole, with facilitate stake top crown beam with the bolt of miniature support pile connect；
(2) the splicing installation of stake top crown beam: after miniature supporting pile driving construction, before active well excavation of foundation pit, level is used first
Instrument controls the absolute altitude of stake top crown beam, and then tentatively fix to its position, then uses high-strength bolt by stake top
It is fixedly connected at the top of crown beam and miniature support pile；
(3) rectangle active well excavates, panel, waist rail installation, side wall high polymer grouting closure construction, the specific steps of which are as follows:
(1) 0.5~1m of rectangle active well stage excavation, the side wall within the scope of cutting depth carry out panel installation protection, and panel can
To be bolted using steel facing, precast concrete facade panel or hard plank with miniature support pile；
(2) high polymer grouting after panel, grouting amount are subject to panel and combine closely with the side wall soil body；
(3) waist rail is installed, and after being excavated to setting absolute altitude, carries out waist rail installation, waist rail is connected by screw bolts with miniature support pile；
(4) successively vertical layered excavation, repetition step (3) are constructed to rectangle active well design work shaft bottom absolute altitude, that is, are completed
The construction of rectangle active well supporting construction can be recycled in flexible compound assembled, when necessary, according to specific use needs, is preced in stake top
The corresponding position setting of beam, waist rail is to support girder steel, with the rigidity and stability of enhancing structure system；
(5) supporting construction completes that, with the beginning of the work of backfill, the recycling work of supporting construction can be carried out using after function
Make, specific recycling step is as follows:
(1) with the progress of backfilling working, panel, waist rail are gradually recycled in layering；
(2) when being backfilled to earth's surface position, start to recycle stake top crown beam and miniature support pile.
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| CN201811095566.1A CN109056746A (en) | 2018-09-19 | 2018-09-19 | The design and construction method of rectangle active well supporting construction can be recycled in a kind of flexible compound assembled |
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| CN201811095566.1A CN109056746A (en) | 2018-09-19 | 2018-09-19 | The design and construction method of rectangle active well supporting construction can be recycled in a kind of flexible compound assembled |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110485467A (en) * | 2019-08-08 | 2019-11-22 | 郑州安源工程技术有限公司 | It is a kind of to preset the recyclable rectangle active well of detachable door opening, the sliding rear assembled by wall and its construction method |
| CN110485473A (en) * | 2019-08-08 | 2019-11-22 | 郑州安源工程技术有限公司 | Rectangle active well and its construction method can be recycled in a kind of assembled that presetting detachable door opening |
| CN110485472A (en) * | 2019-08-08 | 2019-11-22 | 南方工程检测修复技术研究院 | A kind of default push pipe door opening, the rotatably recyclable round-seal reservoir of the rear assembled by wall and its construction method |
| CN110485466A (en) * | 2019-08-08 | 2019-11-22 | 南方工程检测修复技术研究院 | Circular work hole and its construction method can be recycled in a kind of assembled of reserved door opening |
| CN110485469A (en) * | 2019-08-08 | 2019-11-22 | 南方工程检测修复技术研究院 | Round-seal reservoir and its construction method can be recycled by the integrated assembled of wall after one kind |
| CN110485471A (en) * | 2019-08-08 | 2019-11-22 | 郑州安源工程技术有限公司 | It is a kind of sliding rear by the recyclable rectangle active well of the integrated assembled of wall and its construction method |
| CN112796277A (en) * | 2020-12-10 | 2021-05-14 | 中山大学 | I-shaped steel pile-steel panel-high polymer composite layer soil retaining structure |
| CN112943256A (en) * | 2021-01-25 | 2021-06-11 | 西安建筑科技大学 | Construction method of prefabricated pipe-jacking working well |
| CN113737811A (en) * | 2021-09-22 | 2021-12-03 | 中国一冶集团有限公司 | Assembly type supporting structure in narrow foundation pit and construction method thereof |
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| CN110485467B (en) * | 2019-08-08 | 2021-05-04 | 郑州安源工程技术有限公司 | Assembled recyclable rectangular working well with preset detachable door opening and sliding type rear wall and construction method thereof |
| CN110485472B (en) * | 2019-08-08 | 2021-05-11 | 南方工程检测修复技术研究院 | Prefabricated recyclable circular working well with preset pipe jacking door opening and rotary type rear wall and construction method thereof |
| CN110485472A (en) * | 2019-08-08 | 2019-11-22 | 南方工程检测修复技术研究院 | A kind of default push pipe door opening, the rotatably recyclable round-seal reservoir of the rear assembled by wall and its construction method |
| CN110485466A (en) * | 2019-08-08 | 2019-11-22 | 南方工程检测修复技术研究院 | Circular work hole and its construction method can be recycled in a kind of assembled of reserved door opening |
| CN110485469A (en) * | 2019-08-08 | 2019-11-22 | 南方工程检测修复技术研究院 | Round-seal reservoir and its construction method can be recycled by the integrated assembled of wall after one kind |
| CN110485471A (en) * | 2019-08-08 | 2019-11-22 | 郑州安源工程技术有限公司 | It is a kind of sliding rear by the recyclable rectangle active well of the integrated assembled of wall and its construction method |
| CN110485473A (en) * | 2019-08-08 | 2019-11-22 | 郑州安源工程技术有限公司 | Rectangle active well and its construction method can be recycled in a kind of assembled that presetting detachable door opening |
| CN110485471B (en) * | 2019-08-08 | 2021-05-04 | 郑州安源工程技术有限公司 | Sliding type rear wall integrated assembly type recyclable rectangular working well and construction method thereof |
| CN110485467A (en) * | 2019-08-08 | 2019-11-22 | 郑州安源工程技术有限公司 | It is a kind of to preset the recyclable rectangle active well of detachable door opening, the sliding rear assembled by wall and its construction method |
| CN110485473B (en) * | 2019-08-08 | 2021-05-28 | 郑州安源工程技术有限公司 | Assembly type recyclable rectangular working well with preset detachable door opening and construction method thereof |
| CN112796277A (en) * | 2020-12-10 | 2021-05-14 | 中山大学 | I-shaped steel pile-steel panel-high polymer composite layer soil retaining structure |
| CN112943256A (en) * | 2021-01-25 | 2021-06-11 | 西安建筑科技大学 | Construction method of prefabricated pipe-jacking working well |
| CN112943256B (en) * | 2021-01-25 | 2023-10-03 | 西安建筑科技大学 | Construction method of prefabricated pipe-jacking working well |
| CN113737811A (en) * | 2021-09-22 | 2021-12-03 | 中国一冶集团有限公司 | Assembly type supporting structure in narrow foundation pit and construction method thereof |
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