CN114703834A - Lattice column hoisting precision control construction method - Google Patents
Lattice column hoisting precision control construction method Download PDFInfo
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- CN114703834A CN114703834A CN202210484540.6A CN202210484540A CN114703834A CN 114703834 A CN114703834 A CN 114703834A CN 202210484540 A CN202210484540 A CN 202210484540A CN 114703834 A CN114703834 A CN 114703834A
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- pile
- lattice column
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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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/06—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers for observation while placing
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Paleontology (AREA)
- Civil Engineering (AREA)
- Foundations (AREA)
Abstract
The invention provides a construction method for controlling the hoisting precision of a lattice column, which comprises the following steps of firstly carrying out measurement lofting and site cleaning, cleaning and leveling the site, then carrying out lofting, using a total station, a theodolite for orientation and a steel ruler according to a pile site plane diagram, building a red line and a measurement positioning control point, determining pile sites according to the position of the plane diagram, nailing each pile site into the ground by using a steel bar coated with red paint, wherein the positioning deviation is less than 1cm, accurately popping up a control cross line on a hard ground, and then determining the pile sites and submitting a rechecking order for supervision and rechecking acceptance; the data are transmitted to the computer, the data image forming is carried out through the data transmission computer, and the computer carries out the data image forming, so that the accuracy control is facilitated. The data image forming is carried out by utilizing a computer, so that the comparison operation can be conveniently carried out, the comparison can be carried out in the construction process, the installation precision is accurate, and the installation angle and the drilling position of the drilling machine are observed by adopting a total station during construction, so that the accuracy is improved.
Description
Technical Field
The invention relates to the field of construction methods, in particular to a lattice column hoisting precision control construction method.
Background
The section of the lattice column is generally designed into a biaxial symmetrical or uniaxial symmetrical section by section steel or steel plates, and the lattice column is used as a bending component and is multipurpose for plant frame columns and independent columns. The lattice column has the structural characteristics that the material area is arranged far away from the inertia axis, the bending resistance of the component can be enhanced under the condition of the same axial resistance, the material is saved, and compared with the conventional structure, the structure has the advantages of high construction speed, enlarged use area and higher anti-seismic performance. The accuracy of current lattice column installation in the installation is held inaccurately, often leads to the mounting structure to have the difference after the installation.
Disclosure of Invention
The present invention is directed to a construction method for controlling the hoisting precision of a lattice column, which can accurately determine the precision of the lattice column when the lattice column is installed.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a lattice column hoisting precision control construction method is characterized by comprising the following steps:
(1) measuring and lofting and cleaning the site, firstly cleaning and leveling the site, then lofting, building a red line and a measuring and positioning control point according to a pile position plane diagram, using a total station, a theodolite for orientation, a steel ruler, and determining pile positions according to the position of the plane diagram, nailing each pile position into the ground by using a steel bar coated with red paint, wherein the positioning deviation is less than 1cm, accurately popping up a control cross line on a hard ground, and then determining the pile positions and submitting a rechecking list for supervision, rechecking and acceptance;
(2) the data are transmitted to a computer, data image forming is carried out through the data transmission computer, and the computer carries out the data image forming, so that the accuracy is convenient to control;
(3) embedding a pile casing after image forming, wherein measurement personnel and engineering technicians are responsible for embedding accuracy of the pile casing, backfilling the periphery with clay and tamping the clay in layers, reinforcing a ring at the top end, embedding the pile casing deeply, firmly and rightly, and keeping deviation between a center point of the pile casing and an actual pile position less than 10 mm;
(4) the drilling machine is required to be flat and firm in site treatment before being in place so as to meet the construction verticality requirement, brick slag can be filled in a relatively soft site, then a steel plate is paved to serve as a rotary excavating machine construction platform, a fixed operation platform is provided for positioning a lattice column upright frame, after the drilling machine is in place according to an appointed position, the angles of a mast and a drill rod are adjusted under the guidance of technicians, a cross method is adopted to center a hole position when the hole position is aligned, an operator starts a positioning system after the hole position is aligned, positioning memory is carried out, and the drilling machine cannot be displaced after the hole position is aligned;
(5) placing a reinforcement cage, wherein a framework of the reinforcement cage is hung by four points until the framework is vertical to the ground, stopping hoisting, checking whether the framework is straight or not, straightening and straightening if the framework is bent, righting and descending the framework after the framework enters an orifice, strictly preventing the framework from swinging and colliding with a hole wall, placing the framework at a third hanging point and a fourth hanging point to ensure a clip at a hanging point, continuously placing the framework until the framework of the reinforcement cage is placed in place, and penetrating rail steel into a penetrating bar ring reserved in advance;
(6) after the steel reinforcement cage is placed, mounting a lattice column correcting frame, wherein each side of a lattice column is strictly vertical to or parallel to an axis, when the lattice column correcting frame is positioned, a cross line mark is carved on the center of each of the four sides of the lattice column correcting frame and is used for aligning the center of a pile hole, the lattice column correcting frame is firmly connected with a steel plate, the correcting frame is adjusted to ensure the level, the lattice column is placed, each side surface of the lattice column is firmly welded with two main ribs, double-side welding is adopted, the lattice column is fixed at the center of the pile hole by using positioning steel bars, and a total station is used for observation control in the placing process, so that the upper opening of the mounted lattice column is centered, and the hole is placed after the upper point and the lower point are vertical;
(7) after the lattice column is lowered, installing a guide pipe and a grouting pipe, and pouring concrete after the installation;
(8) after backfilling and lattice column fixing and pouring are completed, measuring and re-measuring the position of the lattice column, fixing the lattice column with a steel pipe and the ground in a cross manner under the condition that the position meets the design and specification, uniformly filling sand after the concrete of the upright column is finally set, paying attention to the position of the lattice column during backfilling, and correcting in time if the concrete is carelessly moved;
(9) in the post-grouting construction, in order to control the pile foundation settlement caused by sediment and improve the bearing capacity of the pile foundation, each pile foundation is provided with a post-grouting process, the full-length re-test grouting of the pile bottom and the pile side is required, post-grouting construction parameters refer to specific parameters in a pile test report of the project and are not lower than the grouting standard of the pile test, and the grouting can be stopped when the total grouting amount and the grouting pressure reach the design requirements, or the total grouting amount reaches 75 percent of the design value and the grouting pressure exceeds the design value;
(10) and after the post-grouting construction is finished, providing cement material inspection reports, pressure gauge verification certificates, test grouting records, design process parameters, post-grouting operation records, special condition processing records and other data to meet the requirements, performing bearing capacity inspection after the grouting is finished for 20 days under the condition that the strength of the pile body concrete meets the design requirements, and performing the grouting after the grouting is finished for 15 days when the early strength agent is doped into the grout.
As an improvement, the deviation between the center point of the pile casing and the actual pile position point is less than 10 mm.
As an improvement, the perpendicularity of the drilling machine is corrected by using a total station during drilling.
As an improvement, a total station is used for observation control in the lowering process of the lattice column.
The invention has the beneficial effects that: a construction method for controlling the hoisting precision of lattice columns is characterized in that a computer is used for carrying out data image forming, comparison operation can be conveniently carried out, comparison can be carried out in the construction process, the installation precision is accurate, and a total station is used for observing the installation angle and the drilling position of a drilling machine during construction, so that the accuracy is improved.
Detailed Description
The invention is illustrated below by means of specific examples, without being restricted thereto.
Example one
A lattice column hoisting precision control construction method comprises the following steps:
firstly, carrying out measurement lofting and site cleaning, firstly cleaning and leveling the site, then carrying out lofting, according to a pile position plane diagram, building a red line and a measurement positioning control point, using a total station, a theodolite for orientation, and a steel ruler, determining pile points according to the position of the plane diagram, nailing each pile point into the ground by using a steel bar coated with red paint, wherein the positioning deviation is less than 1cm, accurately popping out a control cross line on a hard terrace, and then determining the pile position and submitting a rechecking list for supervision and rechecking acceptance; the data are transmitted to the computer, the data image forming is carried out through the data transmission computer, and the computer carries out the data image forming, so that the accuracy control is facilitated.
Embedding a pile casing after image forming, wherein measurement personnel and engineering technicians are responsible for the embedding precision of the pile casing, backfilling the periphery with clay and tamping the periphery in a layering manner, reinforcing a ring at the top end, embedding the pile casing deeply, firmly and rightly, and keeping the deviation between the center point of the pile casing and the actual pile position less than 10 mm; the drilling machine is required to be flat and firm in site treatment before being in place so as to meet the construction verticality requirement, brick slag can be filled in a relatively soft site, then a steel plate is paved to serve as a rotary excavating machine construction platform, a fixed operation platform is provided for positioning of a lattice column upright frame, after the drilling machine is in place according to an appointed position, the angles of a mast and a drill rod are adjusted under the guidance of technicians, a cross method is adopted to center a hole position when the hole position is aligned, an operator starts a positioning system after the hole position is aligned, positioning memory is carried out, the drilling machine cannot be displaced after the hole position is aligned, and the verticality is corrected by a total station in the drilling process of the drilling machine.
And (3) placing a reinforcement cage, wherein a framework of the reinforcement cage is hung at four points until the framework is vertical to the ground, stopping hoisting, checking whether the framework is straight, straightening if the framework is bent, righting the framework to descend slowly after the framework enters an orifice, strictly swinging the framework to collide with a hole wall, placing the framework to a third hoisting point and a fourth hoisting point to ensure a clamp of a hoisting point, continuing to place the framework of the reinforcement cage until the framework of the reinforcement cage is placed in place, penetrating rail steel into a penetrating bar ring reserved in advance, and ensuring that the deviation between a central point of a protective cylinder and an actual pile position is less than 10 mm.
After the steel reinforcement cage is placed, mounting a lattice column correcting frame, wherein each side of a lattice column is strictly vertical to or parallel to an axis, when the lattice column correcting frame is positioned, a cross line mark is carved on the center of each of the four sides of the lattice column correcting frame and is used for aligning the center of a pile hole, the lattice column correcting frame is firmly connected with a steel plate, the correcting frame is adjusted to ensure the level, the lattice column is placed, each side surface of the lattice column is firmly welded with two main ribs, double-side welding is adopted, the lattice column is fixed at the center of the pile hole by using positioning steel bars, a total station is used for observation control in the placing process, the upper opening of the mounted lattice column is centered, an upper point and a lower point are vertically placed into the hole, and the total station is used for observation control in the placing process of the lattice column; after the lattice column is lowered, installing a guide pipe and a grouting pipe, and pouring concrete after the installation; after backfilling and lattice column fixing and pouring are completed, measuring and re-measuring the position of the lattice column, fixing the lattice column with a steel pipe and the ground in a cross mode under the condition that the position meets the design and the specification, uniformly filling sand after the concrete of the upright column is finally set, paying attention to the position of the lattice column during backfilling, and timely correcting if the concrete is carelessly moved.
In the post-grouting construction, in order to control the pile foundation settlement caused by sediment and improve the bearing capacity of the pile foundation, each pile foundation is provided with a post-grouting process, the full-length re-test grouting of the pile bottom and the pile side is required, post-grouting construction parameters refer to specific parameters in a pile test report of the project and are not lower than the grouting standard of the pile test, and the grouting can be stopped when the total grouting amount and the grouting pressure reach the design requirements, or the total grouting amount reaches 75 percent of the design value and the grouting pressure exceeds the design value; grouting operation is suitable for starting after the pile is formed for 2 d; the time is not delayed by 30 days after the pile is formed; the distance between the grouting operation and the pore-forming operation point is not smaller than 8-10 m; the pile end grouting should be sequentially carried out with equal amount of grouting on each grouting guide pipe of the same pile, in the grouting construction process, various process parameters of post grouting should be frequently checked, corresponding treatment measures should be taken when abnormality is found, and when main parameters such as grouting amount and the like cannot reach design values, corresponding treatment measures should be taken according to specific engineering conditions.
And after the post-grouting construction is finished, providing cement material inspection reports, pressure gauge verification certificates, test grouting records, design process parameters, post-grouting operation records, special condition processing records and other data to meet the requirements, wherein the bearing capacity inspection is carried out after the grouting is finished for 20 days under the condition that the strength of the pile body concrete meets the design requirements, and the grouting can be carried out after the grouting is finished for 15 days when the early strength agent is doped into the grout.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. A lattice column hoisting precision control construction method is characterized by comprising the following steps:
(1) measuring and lofting and cleaning the site, firstly cleaning and leveling the site, then lofting, building a red line and a measuring and positioning control point according to a pile position plane diagram, using a total station, a theodolite for orientation, a steel ruler, and determining pile positions according to the position of the plane diagram, nailing each pile position into the ground by using a steel bar coated with red paint, wherein the positioning deviation is less than 1cm, accurately popping up a control cross line on a hard ground, and then determining the pile positions and submitting a rechecking list for supervision, rechecking and acceptance;
(2) the data are transmitted to a computer, data image forming is carried out through the data transmission computer, and the computer carries out the data image forming, so that the accuracy is convenient to control;
(3) embedding a pile casing after image forming, wherein measurement personnel and engineering technical personnel are responsible for protecting the embedding precision of the pile casing, backfilling the periphery with clay and tamping the periphery in layers, reinforcing a ring at the top end, embedding the pile casing deeply, firmly embedding and righting the pile casing, and the deviation between the center point of the pile casing and the actual pile position is less than 10 mm;
(4) the drilling machine is required to be flat and firm in site treatment before being in place so as to meet the construction verticality requirement, brick slag can be filled in a relatively soft site, then a steel plate is paved to serve as a rotary excavating machine construction platform, a fixed operation platform is provided for positioning a lattice column upright frame, after the drilling machine is in place according to an appointed position, the angles of a mast and a drill rod are adjusted under the guidance of technicians, a cross method is adopted to center a hole position when the hole position is aligned, an operator starts a positioning system after the hole position is aligned, positioning memory is carried out, and the drilling machine cannot be displaced after the hole position is aligned;
(5) placing a reinforcement cage, wherein a framework of the reinforcement cage is hung by four points until the framework is vertical to the ground, stopping hoisting, checking whether the framework is straight or not, straightening and straightening if the framework is bent, righting and descending the framework after the framework enters an orifice, strictly preventing the framework from swinging and colliding with a hole wall, placing the framework at a third hanging point and a fourth hanging point to ensure a clip at a hanging point, continuously placing the framework until the framework of the reinforcement cage is placed in place, and penetrating rail steel into a penetrating bar ring reserved in advance;
(6) after the steel reinforcement cage is placed, mounting a lattice column correcting frame, wherein each side of a lattice column is strictly vertical to or parallel to an axis, when the lattice column correcting frame is positioned, a cross line mark is carved on the center of each of the four sides of the lattice column correcting frame and is used for aligning the center of a pile hole, the lattice column correcting frame is firmly connected with a steel plate, the correcting frame is adjusted to ensure the level, the lattice column is placed, each side surface of the lattice column is firmly welded with two main ribs, double-side welding is adopted, the lattice column is fixed at the center of the pile hole by using positioning steel bars, and a total station is used for observation control in the placing process, so that the upper opening of the mounted lattice column is centered, and the hole is placed after the upper point and the lower point are vertical;
(7) after the lattice column is lowered, installing a guide pipe and a grouting pipe, and pouring concrete after the installation;
(8) after backfilling and lattice column fixing and pouring are completed, measuring and re-measuring the position of the lattice column, fixing the lattice column with a steel pipe and the ground in a cross manner under the condition that the position meets the design and specification, uniformly filling sand after the concrete of the upright column is finally set, paying attention to the position of the lattice column during backfilling, and correcting in time if the concrete is carelessly moved;
(9) in the post-grouting construction, in order to control the pile foundation settlement caused by sediment and improve the bearing capacity of the pile foundation, each pile foundation is provided with a post-grouting process, the full-length re-test grouting of the pile bottom and the pile side is required, post-grouting construction parameters refer to specific parameters in a pile test report of the project and are not lower than the grouting standard of the pile test, and the grouting can be stopped when the total grouting amount and the grouting pressure reach the design requirements, or the total grouting amount reaches 75 percent of the design value and the grouting pressure exceeds the design value;
(10) and after the post-grouting construction is finished, providing cement material inspection reports, pressure gauge verification certificates, test grouting records, design process parameters, post-grouting operation records, special condition processing records and other data to meet the requirements, wherein the bearing capacity inspection is carried out after the grouting is finished for 20 days under the condition that the strength of the pile body concrete meets the design requirements, and the grouting can be carried out after the grouting is finished for 15 days when the early strength agent is doped into the grout.
2. The lattice column hoisting precision control construction method according to claim 1, wherein a deviation between the center point of the casing and an actual pile location is less than 10 mm.
3. The lattice column hoisting accuracy control construction method as claimed in claim 1, wherein the perpendicularity is corrected by a total station during drilling by the drilling machine.
4. The construction method for controlling the hoisting precision of the lattice column as claimed in claim 1, wherein the lattice column is observed and controlled by a total station during the lowering process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210484540.6A CN114703834A (en) | 2022-05-06 | 2022-05-06 | Lattice column hoisting precision control construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210484540.6A CN114703834A (en) | 2022-05-06 | 2022-05-06 | Lattice column hoisting precision control construction method |
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| CN114703834A true CN114703834A (en) | 2022-07-05 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1113067A (en) * | 1997-06-27 | 1999-01-19 | Artes:Kk | Burying construction method for supplementary stud in reverse concreting construction method |
| CN104358262A (en) * | 2014-09-29 | 2015-02-18 | 中国建筑第八工程局有限公司 | Detachable tool type deep foundation pit inner support guide pillar and construction method |
| CN113605390A (en) * | 2021-09-03 | 2021-11-05 | 中国建筑第二工程局有限公司 | Accurate positioning structure for pile connection and construction method |
| CN114319323A (en) * | 2022-01-11 | 2022-04-12 | 中煤江南建设发展集团有限公司 | Construction method of upright post pile |
-
2022
- 2022-05-06 CN CN202210484540.6A patent/CN114703834A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1113067A (en) * | 1997-06-27 | 1999-01-19 | Artes:Kk | Burying construction method for supplementary stud in reverse concreting construction method |
| CN104358262A (en) * | 2014-09-29 | 2015-02-18 | 中国建筑第八工程局有限公司 | Detachable tool type deep foundation pit inner support guide pillar and construction method |
| CN113605390A (en) * | 2021-09-03 | 2021-11-05 | 中国建筑第二工程局有限公司 | Accurate positioning structure for pile connection and construction method |
| CN114319323A (en) * | 2022-01-11 | 2022-04-12 | 中煤江南建设发展集团有限公司 | Construction method of upright post pile |
Non-Patent Citations (3)
| Title |
|---|
| 张建忠: "城市中心区医院改扩建项目地下工程施工技术", 《施工技术》, vol. 47, no. 9, pages 1 - 6 * |
| 金锄头文库: "立柱桩专项施工方案冯硕", pages 1 - 21, Retrieved from the Internet <URL:https://wenku.so.com/d/7dce11b5c1bf06dfc59cce90d8cd2cf9> * |
| 韩寿兵;唐立飞;: "逆作法基坑中格构柱施工的质量控制实践应用", 工程质量, no. 03 * |
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