CN112609678A - Construction method of low-clearance underground continuous steel wall locking profile steel - Google Patents
Construction method of low-clearance underground continuous steel wall locking profile steel Download PDFInfo
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- CN112609678A CN112609678A CN202011394078.8A CN202011394078A CN112609678A CN 112609678 A CN112609678 A CN 112609678A CN 202011394078 A CN202011394078 A CN 202011394078A CN 112609678 A CN112609678 A CN 112609678A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to a construction method of locking profile steel of an underground continuous steel wall under a low clearance condition, which comprises the following steps: (1) sleeving a sliding guide frame on a guide rod of an upright post of a crawler-type pile machine and placing the guide frame at the bottom of the upright post; after the crawler-type pile machine lifts a section of fore shaft section steel, the sliding guide frame is lifted firstly, so that the fore shaft section steel seam allowance embracing plate is sleeved into the bottom of the section steel seam allowance close to the side of the crawler-type pile machine, and is continuously lifted to the top end of the section steel and is synchronously lowered along with the section steel to be inserted; (2) the crawler-type pile machine lifts the section of the steel bottom to be inserted above the inserting position, slowly puts the section of the steel bottom to the height position of a guide wheel of the movable guide underframe, and sets a gathering station instrument to accurately position the section steel through the adjustment of the guide wheel; (3) in order to ensure the vertical accuracy and firm fixation of the first section steel during the insertion, the section steel is straightened and fixed by the adjusting and fixing device of the first locking section steel and is used as a reference marker post to guide the second section steel and the subsequent section steel in the insertion and the placement.
Description
Technical Field
The invention relates to an underground continuous steel wall, in particular to a construction process for forming the underground continuous steel wall by inserting locking notch section steel into underground soil.
Background
At present, in domestic city construction, deep foundation engineering projects are widely applied. The construction of deep foundation is characterized by that besides the conventional processes of diaphragm wall and drilled pile, the new construction process of underground diaphragm steel wall is introduced.
Compared with the underground continuous wall, the underground continuous steel wall has the following advantages: the wall body structure of pure cement and steel and the wall body structure of cement and profile steel can be used, and the wall body structure is more flexible and diversified; underground wall steel reinforcement cage general on-the-spot ligature, bulky, weight is heavy, and the work efficiency is low, is equipped with large-scale construction jack-up machines many, requires that the place is big. And the fore shaft section steel inserted and placed in the continuous steel wall is prefabricated in a factory and spliced on site, so that the occupied area is small, the configuration of a large construction crane is less, the working efficiency is high, the waste slurry is less, the environment is more protected, and the construction of the engineering in downtown areas is facilitated.
The fore shaft section steel inserted into the underground cemented soil continuous steel wall generally has deep insertion depth and large self weight, the height of a handle rod of a crawler crane is not suitable for the working condition of inserting and placing the section steel under the low clearance condition, and in order to meet the high-precision control requirement of inserting and placing the fore shaft section steel of the underground cemented soil continuous steel wall and facilitate the continuous operation of flexible operation, the construction method of the fore shaft section steel of the underground cemented soil continuous steel wall under the low clearance condition is researched and designed.
Disclosure of Invention
The invention aims to provide a construction method of locking profile steel of an underground continuous steel wall under a low clearance condition, which utilizes the structural characteristics of the underground continuous steel wall, and meets the requirements of engineering implementation and quality under low clearance spaces such as urban overhead overpasses, bridges, building structures and the like through special machines and tools, improved technological measures and the like.
In order to achieve the above object, the present invention provides the following technical solutions:
a construction method of low clearance condition underground continuous steel wall fore shaft shaped steel utilizes the conventional crawler type pile machine configuration to meet the height requirement of the process of inserting the fore shaft shaped steel into the low clearance underground continuous steel wall, a top pulley block frame and a sliding type guide frame, and configures a movable guiding chassis and a first fore shaft shaped steel adjusting and fixing device for the process implementation of inserting the fore shaft shaped steel into the underground continuous steel wall, the construction method comprises the following concrete steps:
(1) sleeving a sliding guide frame on a guide rod of an upright post of a crawler-type pile machine and placing the guide frame at the bottom of the upright post; after the crawler-type pile machine lifts a section of fore shaft section steel, the sliding guide frame is lifted firstly, so that the fore shaft section steel seam allowance embracing plate is sleeved into the bottom of the section steel seam allowance close to the side of the crawler-type pile machine, and is continuously lifted to the top end of the section steel and is synchronously lowered along with the section steel to be inserted;
(2) moving the operating platform vehicle to the position of the section steel group to be inserted, hoisting the bottom section of the section steel to be inserted above the inserting position by the crawler-type pile machine, slowly placing the section steel to be inserted to the height position of a guide wheel of the movable guide underframe, accurately positioning the section steel by erecting a gathering station instrument through adjustment of the guide wheel, and installing an inclinometer on the bottom section of the inserted section steel to assist in measuring and checking the section steel posture in the soil entering process; under the condition of low clearance, due to construction height limitation, under the working condition that the movable guide underframe can only be provided with one layer of guide wheels, the crawler-type pile machine is adopted to control the sliding guide frame to perform matching adjustment, so that the position degree and the vertical precision of the section steel inserting process are ensured;
(3) in order to ensure the vertical accuracy and firm fixation of the first section steel during the insertion, the section steel is straightened and fixed by the adjusting and fixing device of the first locking section steel and is used as a reference marker post to guide the second section steel and the subsequent section steel in the insertion and the placement.
Furthermore, a plurality of groups of pulley blocks are arranged on a pulley block rack at the top of the upright post of the crawler-type pile machine and used for hanging the locking port section steel, the spigot protection core tube and the sliding type guide frame holding plate.
Furthermore, the sliding guide frame is arranged on an upright post guide rod of the crawler-type pile machine, and vertical precision of the profile steel inserting process is controlled under the combined action of the movable guide underframe.
Further, portable direction chassis removes through prefabricating the track on leading the wall, leads to inserting of fore shaft shaped steel, and the straightness that hangs down is controlled to the shaped steel, under the condition that receives the clearance restriction can only arrange the operating mode of individual layer guide pulley, combines slidingtype guide bracket combined action, controls the perpendicular precision of shaped steel process of inserting.
Further, the adjusting and fixing device for the first fore-root locking section steel can accurately adjust and control the verticality of the section steel and fix the section steel on the guide wall.
The invention has the beneficial effects that:
the invention can meet the engineering construction in low clearance space such as urban overhead flyovers, bridges, building structures and the like by utilizing the structural characteristics of the underground continuous steel wall through special machines and tools and improved process methods, and can ensure the construction quality.
Drawings
FIG. 1 is an elevation view of the construction of a low clearance condition underground continuous steel wall latch-up profile steel;
wherein: (a) the pile machine carries on the profiled bar to insert, (b) the pile machine rotates 90 degrees and carries on the profiled bar handling;
FIG. 2 is a construction plan view of a low headroom condition underground continuous steel wall latch notch section steel;
FIG. 3 is a front view of a top pulley block frame of the pile machine column configuration;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a top view of FIG. 3;
FIG. 6 is a front view of the sliding guide;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a sectional view of an adjusting block for a male seam allowance of the holding type steel;
FIG. 9 is a front view of the mobile guide chassis;
FIG. 10 is a left side view of FIG. 9;
FIG. 11 is a top view of FIG. 10;
FIG. 12 is a front sectional view of the adjusting fixture for the first fore-lock shape steel;
FIG. 13 is a left side sectional view of the adjusting and fixing device of the first fore-shaft section steel;
FIG. 14 is a front view of the base with the spindle in the adjustment fixture;
FIG. 15 is a left side view of FIG. 14;
fig. 16 is a top view of fig. 14.
Detailed Description
The following describes in further detail embodiments of the present invention with reference to the accompanying examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in (a), (b) and (2) of fig. 1, the construction method of the clearance limited condition underground continuous steel wall fore shaft section steel of the invention utilizes the conventional crawler-type pile driver 1 to configure the structural members of the upright post 2, the top pulley block frame 3, the sliding guide frame 4 and the like which meet the height requirement of the process of inserting the fore shaft section steel into the low clearance underground continuous steel wall. Meanwhile, special machines such as a movable guide underframe 5, a first locking section steel adjusting and fixing device 6 and the like are also arranged in cooperation with the process implementation of inserting and placing the locking section steel in the underground continuous steel wall.
As shown in fig. 3 to 5, the top pulley block frame 3 includes: 3-1 parts of a pulley block rack body at the top of the upright post, 3-2 parts of a fixed pulley block for hanging profile steel, 3-3 parts of a pulley for hanging a sliding guide frame, 3-4 parts of a passing door pulley for a steel wire rope of a winch, 3-5 parts (one on the left and the right) for hanging a spigot protection core pipe and the like.
As shown in fig. 6 to 8, the sliding guide 4 includes: the guide frame 4-1, the pile frame upright post guide rod holding plate 4-2, the locking section steel female spigot holding plate 4-3, the holding section steel male spigot adjusting block 4-4 and other parts are arranged on the upright post guide rod of the pile machine, and the vertical precision of the section steel inserting process is controlled by combining the combined action of the movable guide bottom frame.
As shown in fig. 9 to 11, the movable guide base frame 5 includes a frame 5-1, a movable wheel 5-2, a holder 5-3, an upper guide wheel 5-4, and a lower guide wheel 5-5. Two layers of guide wheels are generally configured to guide the insertion of the fore shaft section steel and control the verticality of the section steel, and the movable guide underframe 5 is positioned at one time and can control the insertion of three (hereinafter referred to as a group) section steels; inserting and constructing a plurality of groups of profile steels through the movement of a track prefabricated on the guide wall; under the condition of clearance limitation, under the working condition that only a single-layer guide wheel can be arranged, the vertical precision of the section steel inserting process is controlled by combining the combined action of the sliding guide frame 4.
As shown in fig. 12 to 16, the adjusting and fixing device 6 for the first fore-lock section steel includes: a rotating shaft fixing base 6-1, a rotating shaft 6-2, an inclined stay bar 6-3 and a special top section component 6-4. The special top section assembly 6-4 is provided with a special guide catch wheel 6-5 convenient for inserting the second section steel, a shelving rod seat 6-6 with adjustable height difference and the like, and the verticality of the section steel is accurately adjusted and controlled and fixed on a guide wall.
The specific construction process of the invention is as follows:
(1) a conventional crawler-type pile machine 1 is configured with a stand column 2, a top pulley block frame 3, a sliding guide frame 4 and the like which meet the height requirement of a low-clearance underground continuous steel wall mortise lock mouth section steel process. The sliding guide frame 4 is sleeved on the guide rod of the upright post 2 and is arranged at the bottom of the upright post 2. After the crawler-type pile machine hangs 1 and plays a section of fore shaft shaped steel 7, promote slidingtype guide frame 4 earlier, make fore shaft shaped steel tang embrace the board and overlap into the shaped steel tang bottom of nearly crawler-type pile machine 1 side to continue to promote to this shaped steel top department, and follow and plant shaped steel 8 and transfer in step.
(2) The operation platform vehicle is moved to the position of the section steel group to be inserted, the crawler-type pile machine 1 lifts the bottom section of the section steel 8 to be inserted above the inserting position, the bottom section of the section steel is slowly placed to the height position of a guide wheel of the movable guide underframe 8, a gathering station instrument is erected to accurately position the section steel to be inserted through adjustment of the guide wheel, and an inclinometer is arranged on the bottom section of the section steel to be inserted to assist in measuring and checking the posture of the section steel in the soil entering process (one of the section steel to be inserted in each 1-2 groups can be selected to be placed into the inclinometer). Under the low headroom condition, because the construction height restriction, under the operating mode that portable direction chassis 5 can only arrange the one deck guide pulley to need to control slidingtype guide frame 4 with the stake machine and coordinate the adjustment, guarantee the position degree and the vertical accuracy of shaped steel process of inserting.
(3) In the process of inserting the fore-shaft section steel, the inserting positioning and the vertical precision control of the fore-shaft section steel are very important, and the construction quality and the progress control of the whole project can be influenced. In order to ensure the vertical accuracy and firm fixation of the first section steel, the first section steel is straightened and fixed by the adjusting and fixing device 6 of the first section steel, and the first section steel is used as a benchmark marker post section steel (inserted section steel 9) to guide the second section steel and the subsequent section steel to be inserted.
The construction method of the underground continuous steel wall locking section steel is suitable for clearance construction working conditions of urban overhead overpasses, bridges, building structures and the like, and the technical scheme of the method is also suitable for normal working conditions of non-low clearance.
Claims (5)
1. A construction method of low clearance condition underground continuous steel wall fore shaft shaped steel utilizes the configuration of a conventional crawler-type pile driver to meet the requirements of the high upright post, a top pulley block frame and a sliding guide frame of the process of inserting the fore shaft shaped steel into the low clearance underground continuous steel wall, and configures a movable guide underframe and an adjusting and fixing device of a first fore shaft shaped steel for the process implementation of inserting the fore shaft shaped steel into the underground continuous steel wall, and is characterized in that the construction method comprises the following specific steps:
(1) sleeving a sliding guide frame on a guide rod of an upright post of a crawler-type pile machine and placing the guide frame at the bottom of the upright post; after the crawler-type pile machine lifts a section of fore shaft section steel, the sliding guide frame is lifted firstly, so that the fore shaft section steel seam allowance embracing plate is sleeved into the bottom of the section steel seam allowance close to the side of the crawler-type pile machine, and is continuously lifted to the top end of the section steel and is synchronously lowered along with the section steel to be inserted;
(2) moving the operating platform vehicle to the position of the section steel group to be inserted, hoisting the bottom section of the section steel to be inserted above the inserting position by the crawler-type pile machine, slowly placing the section steel to be inserted to the height position of a guide wheel of the movable guide underframe, accurately positioning the section steel by erecting a gathering station instrument through adjustment of the guide wheel, and installing an inclinometer on the bottom section of the inserted section steel to assist in measuring and checking the section steel posture in the soil entering process; under the condition of low clearance, due to construction height limitation, under the working condition that the movable guide underframe can only be provided with one layer of guide wheels, the crawler-type pile machine is adopted to control the sliding guide frame to perform matching adjustment, so that the position degree and the vertical precision of the section steel inserting process are ensured;
(3) in order to ensure the vertical accuracy and firm fixation of the first section steel during the insertion, the section steel is straightened and fixed by the adjusting and fixing device of the first locking section steel and is used as a reference marker post to guide the second section steel and the subsequent section steel in the insertion and the placement.
2. The method for constructing locking section steel of underground continuous steel wall with low clearance condition as claimed in claim 1, wherein: and a plurality of groups of pulley blocks are arranged on a pulley block rack at the top of the upright post of the crawler-type pile machine and are used for hanging and placing the locking port section steel, the spigot protection core tube and the sliding type guide frame holding plate.
3. The method for constructing locking section steel of underground continuous steel wall with low clearance condition as claimed in claim 1, wherein: the sliding guide frame is arranged on an upright post guide rod of the crawler-type pile machine and controls the vertical precision of the profile steel inserting process by combining the combined action of the movable guide underframe.
4. The method for constructing locking section steel of underground continuous steel wall with low clearance condition as claimed in claim 1, wherein: the movable guide underframe moves through a track prefabricated on a guide wall, guides the insertion of the fore shaft section steel, controls the verticality of the section steel, and controls the vertical precision of the section steel insertion process by combining the combined action of a sliding guide frame under the condition of clearance limitation under the working condition that only single-layer guide wheels can be arranged.
5. The method for constructing locking section steel of underground continuous steel wall with low clearance condition as claimed in claim 1, wherein: the adjusting and fixing device for the first locking section steel accurately adjusts and controls the verticality of the section steel and fixes the section steel on the guide wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011394078.8A CN112609678B (en) | 2020-12-03 | 2020-12-03 | Construction method of low-clearance underground continuous steel wall locking profile steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011394078.8A CN112609678B (en) | 2020-12-03 | 2020-12-03 | Construction method of low-clearance underground continuous steel wall locking profile steel |
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| CN112609678A true CN112609678A (en) | 2021-04-06 |
| CN112609678B CN112609678B (en) | 2022-11-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115162321A (en) * | 2022-08-08 | 2022-10-11 | 上海市基础工程集团有限公司 | Reinforced movable guide underframe for insertion type steel of cement soil continuous steel wall and construction method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR820002209B1 (en) * | 1979-07-05 | 1982-11-29 | 사까모도 노부오 | Pile driving method |
| CN203296048U (en) * | 2013-05-07 | 2013-11-20 | 中交第一公路工程局有限公司 | Guide locating device for driving steel sheet pile |
| CN111851468A (en) * | 2020-07-28 | 2020-10-30 | 上海市基础工程集团有限公司 | Underground water soil steel wall continuous inserting verticality control construction method |
-
2020
- 2020-12-03 CN CN202011394078.8A patent/CN112609678B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR820002209B1 (en) * | 1979-07-05 | 1982-11-29 | 사까모도 노부오 | Pile driving method |
| CN203296048U (en) * | 2013-05-07 | 2013-11-20 | 中交第一公路工程局有限公司 | Guide locating device for driving steel sheet pile |
| CN111851468A (en) * | 2020-07-28 | 2020-10-30 | 上海市基础工程集团有限公司 | Underground water soil steel wall continuous inserting verticality control construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115162321A (en) * | 2022-08-08 | 2022-10-11 | 上海市基础工程集团有限公司 | Reinforced movable guide underframe for insertion type steel of cement soil continuous steel wall and construction method |
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| CN112609678B (en) | 2022-11-08 |
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