CN115162275B - Construction method for embedded part of integral all-steel floating type dolphin - Google Patents
Construction method for embedded part of integral all-steel floating type dolphin Download PDFInfo
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- CN115162275B CN115162275B CN202210903210.6A CN202210903210A CN115162275B CN 115162275 B CN115162275 B CN 115162275B CN 202210903210 A CN202210903210 A CN 202210903210A CN 115162275 B CN115162275 B CN 115162275B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
- E02B3/24—Mooring posts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
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Abstract
The invention relates to the technical field of water transport engineering construction, in particular to a novel integral all-steel floating type dolphin embedded part construction method, which comprises the following steps of: positioning the distance between two guide rails and the distance between two corner protectors according to a processing drawing, connecting the two guide rails and the corner protectors by adopting arc steel plates, and fixing each component by spot welding; step II, paying off and positioning: notifying a measurer to loft the embedded member of the dolphin according to a construction drawing, and paying out the center line position of the embedded member of the dolphin; step III, hoisting the embedded parts of the mooring columns: and transporting the embedded parts assembled into a whole in a processing plant to an installation position and hoisting by using automobile hoisting equipment. According to the invention, the steel guide rail, the steel corner protector and other separated embedded part structures are adjusted to be full-section steel structures, so that unified processing of a processing plant is facilitated, the preparation of the material steel structures is adapted to the requirements of construction progress, and the construction efficiency is improved on the premise of reducing the construction difficulty.
Description
Technical Field
The invention relates to the technical field of water transport engineering construction, in particular to a novel integral all-steel floating type dolphin embedded part construction method.
Background
In the channel energy expansion upgrading engineering, the traditional installation of the embedded parts of the dolphins is a construction method of working procedures such as the installation of the embedded parts of the dolphins after a secondary groove is reserved for a gate chamber to be closed to the top. Because engineering construction is complicated from working procedures such as scaffold platform erection, secondary slot template dismantling, roughening, embedded part layer-by-layer splicing, reinforcement binding, template installation, concrete layered pouring, template dismantling and the like, a large amount of time and labor are spent, a large amount of templates and steel pipe scaffold cannot be accumulated in the traditional construction method, the aim of saving construction period is difficult to achieve, and large cost is required to be input. The following three problems mainly exist: 1. the corner protectors of the embedded parts are mutually independent from the guide rails, so that displacement is easy to cause, and the embedded parts of the single mooring post comprise two corner protectors and two guide rails which are mutually independent from each other in the installation process, and are subjected to field layered construction, repeated positioning is needed in the installation process, dislocation and displacement are easy to cause, and the installation quality is affected; 2. the construction space is small, the construction is difficult, the safety coefficient is small, the construction difficulty is small due to space limitation in the installation process, the embedded part assembly, the steel bar binding, the template mounting and dismounting, the concrete vibrating and the like are all caused, and the safety coefficient is low; 3. the working procedures are complicated, the engineering quantity is large, the construction period is long, the construction of the embedded parts of the ship mooring posts is started after the lock chamber is closed to the top, each ship lock is provided with 24 sets of floating ship mooring posts, the embedded parts of the ship mooring posts are large in height, the working procedures of building a scaffold, roughening secondary grooves, installing the embedded parts, binding reinforcing steel bars, installing templates and the like are needed, and the working procedures are complicated and occupy a long period. Thus, there is an urgent need for a new construction method for an integral all-steel floating dolphin embedment with few welds, easy manufacture, short construction period and low overall cost.
Disclosure of Invention
The invention aims to solve the technical problem of providing a novel construction method for an integral all-steel floating type dolphin embedded part aiming at the defects of the prior art.
The invention discloses a novel integral all-steel floating type dolphin embedded part construction method, which aims to solve the technical problems that the method is realized through the following technical scheme: positioning the distance between two guide rails and the distance between two corner protectors according to a processing drawing, connecting the two guide rails and the corner protectors by adopting arc steel plates, fixing each component by spot welding, and horizontally placing the spliced embedded parts after reinforcement to perform a continuous welding process of each longitudinal welding seam; step II, paying off and positioning: after the lock chamber concrete is poured to the elevation of 18.82, notifying a measuring staff to loft the embedded parts of the dolphins according to a construction drawing, and discharging the center line position of the embedded parts of the dolphins; step III, hoisting the embedded parts of the mooring columns: transporting embedded parts assembled into a whole in a processing plant to an installation position and hoisting by using automobile hoisting equipment; and IV, steel plate facing installation: after the template is installed, welding, installing and fixing the steel plate facing according to a construction drawing, supporting and fixing the outer side of the embedded part in a 45-degree angle inclined strut mode by adopting a channel steel 10#a, and pouring the embedded part into concrete after installation; step V, binding reinforcing steel bars, inspecting bins and pouring concrete: binding steel bars according to the requirements of construction drawings, and pouring concrete after supervision and acceptance; step VI, installing a next embedded part: after the concrete is initially set, repeatedly splicing the embedded parts, and allowing constructors to enter the installation part for installation, adjustment and reinforcement until reaching the top of the bollard; step VII, removing the inner support of the embedded part inner element-shaped channel steel: and removing the inner support by using gas cutting, thereby completing the whole construction process.
Further, the positioning distance between the two guide rails in the step I is 1410mm; the positioning distance between the two corner protectors is 600mm, and the two guide rails are connected by adopting a first arc steel plate with the thickness of 8mm, R647mm and the arc length of 1414 mm; the guide rail is connected with the corner protector through a second arc steel plate with the thickness of 8mm and the arc length of 352mm, and the guide rail is connected with the corner protector through the first arc steel plate and the second arc steel plate to form an omega-shaped symmetrical embedded part cross-section structure.
Further, the embedded part inner wall is internally welded and supported through channel steel groups, the channel steel groups are arranged at a longitudinal distance of 1.5m, each channel steel group comprises a first channel steel with the length of 600mm, a second channel steel with the length of 1410mm and two third channel steels with the length of 548mm, and the channel steel groups form a meta-shape in the section of the embedded part.
Further, the channel steel group is made of 10#a channel steel, the first channel steel is used for connecting the angle bead at the left side and the right side, the second channel steel is used for connecting the guide rails at the left side and the right side, and the third channel steel is used for connecting the first arc steel plate with the second channel steel in a bilateral symmetry connection mode.
And (3) selecting a lifting sling of the automobile lifting equipment for lifting the embedded part in the step (III) to ensure that the safety coefficient is not less than 6 times, and connecting the steel wire rope with the lifting lug at the top of the guide rail groove by using the shackle during lifting, wherein the operation is strictly performed according to the technical requirement of lifting operation before lifting.
And further, the step III comprises the steps of hoisting the embedded part in place, carrying out position adjustment on the embedded part by utilizing a plumb bob and a basket bolt tool, and carrying out external bracing reinforcement by utilizing channel steel after the position is qualified.
Further, the step VI comprises the steps of polishing and finishing the inter-joint butt joint of the embedded part and painting paint for corrosion prevention in the assembly process, ensures smooth transition of the welding seam, ensures that the surplus height of the welding seam is not more than 1mm, and ensures that the dislocation between adjacent guide rails is less than 1mm.
Further, the total height of the single set of bollard burial parts required to be installed in the step VI is 22.2m, and the single set of bollard burial parts are manufactured in the step I in 6 sections, wherein the height of the last section is 2.2m, the heights of the other 5 sections are 4m, and the mass of the first section burial part is the largest and is 1.1t.
Further, the step VII comprises the steps that when the embedded part is dismounted, the gas cutting distance is not smaller than 2mm, and the rest part of the surface cutting is polished smoothly by an angle grinder, painted and preserved.
Compared with the prior art, the invention has the following advantages:
(1) According to the invention, the steel guide rail, the steel corner bead and other separated embedded part structures are adjusted to be full-section steel structures, so that unified processing of a processing plant is facilitated, the preparation of the material steel structures is adapted to the requirements of construction progress, and the construction efficiency is improved on the premise of reducing the construction difficulty;
(2) The invention optimizes the section type of the floating type dolphin embedded part, innovatively adjusts the hexagonal section into a circular section, overcomes the defects of complicated splicing of the hexagonal section, multiple welding seams, low manufacturing efficiency and the like, greatly improves the integrity of the embedded part, and ensures the installation precision of the embedded part;
(3) According to the invention, the floating type mooring post embedded part is adjusted from second-stage construction to first-stage construction, so that turnover procedures of dowel bar installation, template mounting and dismounting, construction platform erection, concrete roughening and the like in the second-stage construction are reduced; meanwhile, an inner and outer double-support reinforcement technology is innovatively adopted, namely three channel steel diagonal braces are adopted outside the embedded part, and a 'meta' -type channel steel inner support is adopted inside the embedded part, so that the problem that the embedded part device is not easy to deform in the first-stage concrete pouring process is solved.
Drawings
FIG. 1 is a schematic flow diagram of a construction method of the present invention;
FIG. 2 is a schematic cross-sectional view of a dolphin embedment of the invention;
FIG. 3 is a front view of the assembled structure of the post buried member of the present invention;
FIG. 4 is a schematic diagram of a cross-sectional structural form of an original dolphin embedment of the present invention;
the ship comprises a guide rail 1, a corner protector 2, a first arc steel plate 3, a second arc steel plate 4, a first channel steel 5, a second channel steel 6, a third channel steel 7, an inclined strut 8, an original buried piece 9 and a mooring column 9 a.
Detailed Description
As shown in figures 1-4, the novel integral all-steel floating type dolphin embedded part construction method comprises the following steps of: according to a processing drawing, positioning the distance between the two guide rails 1 and the distance between the two corner protectors 2, wherein the two guide rails 1 and the corner protectors 2 are connected by adopting arc steel plates, fixing all the components by spot welding, horizontally placing the spliced embedded parts after reinforcement, performing continuous welding of all the longitudinal welding seams, fixing all the components by spot welding, and horizontally placing the spliced embedded parts after reinforcement, performing continuous welding of all the longitudinal welding seams;
step II, paying off and positioning: after the lock chamber concrete is poured to the elevation of 18.82, notifying a measuring staff to loft the embedded parts of the dolphins according to a construction drawing, and discharging the center line position of the embedded parts of the dolphins;
step III, hoisting the embedded parts of the mooring columns: the embedded parts assembled into a whole in a processing plant are transported to an installation position and are hoisted by using an automobile crane, a lifting sling of the automobile crane for hoisting the embedded parts in the step III has a safety factor of not less than 6 times, the automobile crane adopts a 25t automobile crane, a steel wire rope is connected with a lifting lug at the top of a guide rail 1 groove by using a shackle during hoisting, the operation is strictly carried out according to the technical requirement of hoisting operation before hoisting, the step III comprises the process of carrying out position adjustment on the embedded parts by using a plumb bob and a basket bolt tool after the embedded parts are hoisted in place, and carrying out external bracing reinforcement by using channel steel after the position is qualified;
and IV, steel plate facing installation: after the template is installed, welding, installing and fixing the steel plate facing according to a construction drawing, supporting and fixing the outer side of the embedded part in a form of a channel steel 10#a and a 45-degree inclined strut 8, and pouring the embedded part into concrete after installation;
step V, binding reinforcing steel bars, inspecting bins and pouring concrete: binding steel bars according to the requirements of construction drawings, and pouring concrete after supervision and acceptance;
step VI, installing a next embedded part: after the concrete is initially set, repeatedly splicing the embedded parts, and enabling constructors to enter the installation position to install, adjust and strengthen until reaching the top of the bollard, wherein the step VI comprises the steps of polishing joints between the embedded parts and brushing paint to prevent corrosion in sequence in the splicing process, ensuring that welding seams are in smooth transition and the residual height of the welding seams is not more than 1mm, ensuring that dislocation between adjacent guide rails 1 is less than 1mm, and the single set of bollard embedded parts required to be installed in the step VI are manufactured in a way that the total height of each set of bollard embedded parts is 22.2m and each set of bollard embedded parts is divided into 6 sections in the step I, wherein the height of the last section is 2.2m, the heights of the other 5 sections are all 4m, and the mass of each first section embedded part is the largest and 1.1t;
step VII, removing the inner support of the embedded part inner element-shaped channel steel: and (3) removing the inner support by using gas cutting, thereby completing the whole construction process, wherein the gas cutting distance is not less than 2mm from the surface of the embedded part during the removal in the step VII, and the rest part of the surface cutting is polished smoothly by adopting an angle grinder, painted and preserved.
Specifically, the positioning distance between the two guide rails 1 in the step I is 1410mm; the positioning distance between the two corner protectors 2 is 600mm, and the two guide rails 1 are connected by adopting a first arc steel plate 3 with the thickness of 8mm, R647mm and the arc length of 1414 mm; the guide rail 1 and the corner protector 2 are connected by adopting a second arc steel plate 4 with the thickness of 8mm and the arc length of 352mm, and the guide rail 1 and the corner protector 2 are connected into an omega-shaped symmetrical embedded part cross-section structure by the first arc steel plate 3 and the second arc steel plate 4. The embedded part inner wall is internally welded and supported through channel steel groups, the channel steel groups are arranged at a longitudinal spacing of 1.5m, each channel steel group comprises a first channel steel 5 with the length of 600mm, a second channel steel 6 with the length of 1410mm and two third channel steels 7 with the length of 548mm, the channel steel groups form a 'element' shape in the section of the embedded part, and the embedded part is dismantled for recycling after being installed. The channel steel group is made of 10#a channel steel, the first channel steel 5 is used for connecting angle bead 2 on the left side and the right side, the second channel steel 6 is used for connecting guide rail 1 on the left side and the right side, the third channel steel 7 is used for connecting the first circular arc steel plate 3 with the second channel steel 6 in a bilateral symmetry connection mode, the original embedded part 9 is formed by welding the first circular arc steel plate 3, the second circular arc steel plate 4, the guide rail 1 and the angle bead 2, and when the novel ship-tie column is in practical application, the rolling device of the ship-tie column 9a slides in the guide rail 1 of the original embedded part 9, and the angle bead 2 is used for carrying out friction protection on a connecting part, so that the lifting ship-tie action of the ship-tie column is realized.
The prior traditional bollard embedded part generally performs secondary construction by reserving secondary grooves, and needs procedures of binding reinforcing steel bars to the secondary grooves, installing and removing templates, erecting scaffolds, roughening the secondary grooves and the like. The calculation finds that the construction is carried out according to the traditional construction mode, a large amount of materials and manpower are required, the influence on the construction period is larger, five 8mm steel plates can be used for assembling a steel plate a according to the size of a buried part groove of a dolphin, two 8mm steel plates are used for assembling a steel plate b, the steel plate a and the steel plate b, a dolphin guide rail 1 and a corner protector 2 are integrally assembled in a processing plant, and the whole dolphin buried part is divided into 6 sections (total height is 22.2 m), wherein 5 sections are 4m, and 1 section is 2.2m. The steel plates a and b between the guide rail 1 and between the guide rail and the chamfer angles serve as a primary template and are buried in the concrete together with the external supporting channel steel without dismantling; the rib plates in the groove are arranged at intervals of 1 meter, and are removed after concrete pouring, but the mode has more welding seams, the welding precision is difficult to master, and a large amount of welding labor of a processing factory is consumed. Compared with the traditional secondary installation construction process, the construction method has the advantages of simplifying the working procedures, reducing turnover of construction materials, reducing the construction cost, and simultaneously, most importantly, accelerating the construction efficiency and saving a large amount of construction period.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A construction method of an integral all-steel floating type bollard burial part is characterized by comprising the following steps of: comprises the following steps of the method,
step I, splicing a processing plant: positioning the distance between two guide rails and the distance between two corner protectors according to a processing drawing, wherein the two guide rails and the corner protectors are connected by adopting arc steel plates, each component is fixed by spot welding, the spliced embedded parts are horizontally placed after being reinforced, and the continuous welding process of each longitudinal welding seam is carried out, wherein the positioning distance between the two guide rails is 1410mm; the positioning distance between the two corner protectors is 600mm, and the two guide rails are connected by adopting a first arc steel plate with the thickness of 8mm, R647mm and the arc length of 1414 mm; the guide rail is connected with the angle bead through a second arc steel plate with the thickness of 8mm and the arc length of R647mm, the guide rail is connected with the angle bead through a first arc steel plate and a second arc steel plate to form an omega-shaped symmetrical embedded part cross section structure, the inner wall of the embedded part is internally welded and supported through channel steel groups, the channel steel groups are arranged and arranged at a longitudinal interval of 1.5m, each channel steel group comprises a first channel steel with the length of 600mm, a second channel steel with the length of 1410mm and two third channel steels with the length of 548mm, the channel steel groups form a U-shaped part in the embedded part cross section, the channel steel groups are made of 10# a channel steel, the first channel steel is used for connecting the angle bead at the left side and the right side, the second channel steel is used for connecting the guide rail at the left side and the right side, and the third channel steel is used for connecting the first arc steel plate with the second channel steel in a bilateral symmetry connection mode;
step II, paying off and positioning: when the lock chamber concrete is poured to the elevation of 18.82, notifying a measuring staff to loft the embedded parts of the dolphins according to a construction drawing, and discharging the center line position of the embedded parts of the dolphins;
step III, hoisting the embedded parts of the mooring columns: transporting embedded parts assembled into a whole in a processing plant to an installation position and hoisting by using automobile hoisting equipment;
and IV, steel plate facing installation: after the template is installed, welding, installing and fixing the steel plate facing according to a construction drawing, supporting and fixing the outer side of the embedded part in a 45-degree angle inclined strut mode by adopting a channel steel 10#a, and pouring the embedded part into concrete after installation;
step V, binding reinforcing steel bars, inspecting bins and pouring concrete: binding steel bars according to the requirements of construction drawings, and pouring concrete after supervision and acceptance;
step VI, installing a next embedded part: after the concrete is initially set, repeatedly splicing the embedded parts, and allowing constructors to enter the installation part for installation, adjustment and reinforcement until reaching the top of the bollard;
step VII, removing the inner support of the embedded part inner element-shaped channel steel: and removing the inner support by using gas cutting, thereby completing the whole construction process.
2. The method for constructing the integral all-steel floating dolphin buried part of claim 1, which is characterized by comprising the following steps: and (3) selecting a lifting sling of the automobile lifting equipment for lifting the embedded part in the step (III) to ensure that the safety coefficient is not less than 6 times, and connecting the steel wire rope with a lifting lug at the top of the guide rail groove by using a shackle during lifting, wherein the operation is strictly performed according to the technical requirement of lifting operation before lifting.
3. The method for constructing the integral all-steel floating dolphin buried part of claim 1, which is characterized by comprising the following steps: and step III, after the embedded part is hoisted in place, carrying out a position adjustment process on the embedded part by utilizing a plumb bob and a turnbuckle tool, and carrying out external bracing reinforcement by utilizing channel steel after the position is qualified.
4. The method for constructing the integral all-steel floating dolphin buried part of claim 1, which is characterized by comprising the following steps: step VI includes polishing joints among buried parts successively in the assembly process, polishing and finishing the joints and painting paint for corrosion prevention, ensuring smooth transition of welding seams, ensuring that the surplus height of the welding seams is not more than 1mm, and ensuring that dislocation among adjacent guide rails is less than 1mm.
5. The method for constructing the integral all-steel floating dolphin buried part of claim 4, which is characterized by comprising the following steps: the total height of the single set of bollard burial parts required to be installed in the step VI is 22.2m, and the single set of bollard burial parts are manufactured in the step I in 6 sections, wherein the height of the last section is 2.2m, the heights of the other 5 sections are 4m, and the mass of the first section burial part is the largest and is 1.1t.
6. The method for constructing the integral all-steel floating dolphin buried part of claim 1, which is characterized by comprising the following steps: and step VII, namely, when the embedded part is removed, the gas cutting distance is not less than 2mm, and the rest part of the surface cutting is polished smoothly by an angle grinder, painted and preserved.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210903210.6A CN115162275B (en) | 2022-07-29 | 2022-07-29 | Construction method for embedded part of integral all-steel floating type dolphin |
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| CN202210903210.6A CN115162275B (en) | 2022-07-29 | 2022-07-29 | Construction method for embedded part of integral all-steel floating type dolphin |
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| CN115162275B true CN115162275B (en) | 2023-04-25 |
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| US9016025B2 (en) * | 2012-06-11 | 2015-04-28 | Zhejiang Construction Engineering Group Co., Ltd | Constructing method for concrete cylinder of construction steel bar of high-rise steel structure |
| WO2016033770A1 (en) * | 2014-09-04 | 2016-03-10 | 冯新林 | Method for construction of suspended rhombic aluminum veneer shading curtain wall for exhibition hall |
| CN106088478B (en) * | 2016-08-23 | 2019-08-09 | 中建八局第二建设有限公司 | Tilt strength steel concrete cylinder construction method |
| CN106368183B (en) * | 2016-10-13 | 2018-12-14 | 中亿丰建设集团股份有限公司 | Under horizontal steel-slag sand side sealing embedded part pour construction method for forming |
| CN110284482B (en) * | 2019-06-26 | 2021-02-02 | 中国葛洲坝集团机械船舶有限公司 | Floating bollard guide groove assembling device and assembling method |
| CN111827241A (en) * | 2020-07-27 | 2020-10-27 | 曹灵涛 | Construction method of two-stage concrete hinge type integral steel core mold of ship lock floating type mooring column |
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