CN115182310A

CN115182310A - Sluice construction method based on BIM system

Info

Publication number: CN115182310A
Application number: CN202210902513.6A
Authority: CN
Inventors: 李路华; 张守好; 武守猛; 王猛; 张存磊
Original assignee: Changjiang Water Conservancy And Hydropower Engineering Construction Wuhan Co ltd
Current assignee: Changjiang Water Conservancy And Hydropower Engineering Construction Wuhan Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-10-14

Abstract

The invention discloses a sluice construction method based on a BIM system, which comprises the following steps of (1) measuring lofting, and determining an engineering construction control sideline, a datum point, a datum line and a level point; and establishing a preliminary sluice model through a BIM system, constructing the temporary cofferdam in the step (2), increasing filling by adopting an occupancy method, constructing by adopting a single-side or double-side simultaneous occupancy method, and constructing the earthwork engineering in the step (3), wherein the earthwork engineering comprises two steps of earthwork excavation and earthwork backfilling, and the construction is carried out by adopting a model PC240 excavator matched with a dump truck. According to the water gate construction method based on the BIM system, the BIM system is used for building the three-dimensional model for the water gate lofting data, so that constructors can know the water gate data more visually and accurately, the quality of the control concrete is more strict, the water gate substrate is guaranteed to have reliable certainty, the safety and the service life are improved, meanwhile, heavy machinery is reasonably used, and the construction period is shortened.

Description

Water gate construction method based on BIM system

Technical Field

The invention relates to the field of hydraulic engineering construction, in particular to a sluice construction method based on a BIM system.

Background

The water gate is a low-water-head hydraulic structure built on a river channel and a channel and used for controlling flow and adjusting water level by using the gate; the closing of the gate can block flood, block tide or raise the upstream water level so as to meet the requirements of irrigation, power generation, shipping, aquatic products, environmental protection, industrial and domestic water and the like; the gate is opened, flood, waterlogging, waste water or waste water can be released, and water can be supplied to downstream rivers or channels; the sluice gate is closed, the water level of the upstream can be raised by blocking flood, blocking tide and storing water so as to meet the requirement of upstream water taking or navigation, the sluice gate is opened, the flood can be discharged, the waterlogging can be drained, sand can be flushed, water can be taken, or the flow can be adjusted according to the requirement of downstream water using, the sluice gate is very widely applied to water conservancy projects, and is built in riverways, canal systems, reservoirs, lakes and coastal areas.

However, the existing sluice construction method has long construction time, slow engineering progress and low quality control requirements on concrete engineering and steel bar engineering, so that the foundation is low in reliability and poor in overall construction quality after sluice construction is finished;

therefore, a method for constructing a sluice based on the BIM system is required to solve the above problems.

Disclosure of Invention

The invention aims to provide a water gate construction method based on a BIM system, and aims to solve the problems that the existing water gate construction method in the background art is long in construction time, slow in engineering progress and low in quality control requirements on concrete engineering and steel bar engineering, so that the reliability of a base after the water gate construction is finished is low, and the overall construction quality is poor.

In order to achieve the purpose, the invention provides the following technical scheme: a sluice construction method based on a BIM system comprises the following steps:

measuring lofting, and determining an engineering construction control sideline, a datum point, a datum line and a level point; establishing a preliminary sluice model through a BIM system;

step (2), constructing the temporary cofferdam, namely filling by adopting an occupancy method, and constructing by adopting a unilateral or bilateral simultaneous occupancy method;

the earthwork engineering of the step (3) comprises two steps of earthwork excavation and earthwork backfilling, wherein a model PC240 excavator is adopted to be matched with a dump truck for carrying out;

step (4) steel bar engineering, lofting and blanking processing are carried out according to construction specifications and design requirements, wherein the processing comprises straightening, derusting, shearing, bending and the like, and iron wires are adopted for binding the steel bar;

step (5) concrete engineering, wherein the concrete pouring adopts line production and is continuously poured according to a construction plan;

and (6) masonry engineering, which comprises the paving construction of a gravel cushion layer and a reverse filter layer and the mortar block stone construction.

As a preferable technical scheme of the invention, in the step (2), the temporary cofferdam is constructed, the earth is taken by adopting an excavating machine and is filled by adopting an occupancy method, when the cofferdam is filled and exceeds the water surface, a layered earth feeding method is adopted, the thickness of a single layer is controlled to be 20-30cm, and the particle size of earth materials is not more than 5cm.

As a preferred technical scheme of the invention, after the cofferdam is filled in the step (2), waterproof cloth is paved on the water-facing side of the outer cofferdam, a reversed filter layer is paved at the slope angle on the inner side of the peripheral weir by using bagged stones, and the reversed filter layer has the height of 1-1.5 meters and the width of 0.5-0.8 meter.

As the preferred technical scheme of the invention, the earthwork in the step (3);

1) Excavating earthwork: before excavation of the foundation pit earthwork, the elevation control column is arranged according to the step (1), a layered excavation method is adopted, drainage ditches need to be arranged layer by layer, and water accumulation pits can be arranged inside the drainage ditches so as to facilitate drainage through a water pump and ensure that no water accumulation is formed in the side slope range;

2) Backfilling earthwork: and the earthwork compaction of the foundation pit is carried out by rolling by using crawler wheels of a bulldozer, and simultaneously, the earthwork compaction is carried out by using a frog tamper with connecting belts at the bottoms of buildings such as a power transformation room, a duty room and the like, so that the compaction coefficient is not lower than 0.93.

As the preferable technical proposal of the invention, the step (4) of the reinforcing steel bar engineering,

1) And (3) detection of the quality of the steel bars: ensure the steel bar surface to be smooth and not damaged, if the surface has rusty stains or other pollution, the steel bar surface needs to be removed before use, ensure the steel bar to be straight, and have no local bending phenomena

2) Straightening the steel bars: straightening the steel bars by adopting a cold drawing method, wherein the cold drawing rate of the I-grade steel bars is not more than 3%; the cold drawing rate of the II-grade and III-grade steel bars is not more than 1.5 percent

3) And (3) bundling of the steel bars: the binding wire adopts No. 20 iron wires, and two groups of iron wires are twisted into four strands for binding, so that the binding structure is ensured to be in a pressed area.

As a preferable technical scheme of the invention, the concrete engineering in the step (5):

1) Selection and weighing control of raw materials: the concrete engineering cement is No. 32.5 cement, and the water content of the detected sand needs to be controlled to be 8-12% through a special metering device;

2) Mixing concrete: stirring by using a JDY-350 mixer, and detecting the water content of sand and stone before construction;

3) And (3) concrete transportation: the concrete transportation adopts a wheel vehicle for transportation, the horizontal transportation distance is not more than 150 meters, the transportation road surface is required to be smooth, the segregation of concrete and objects is prevented, the initial setting of the concrete is prevented, and the plasticity of the concrete is reduced;

4) Pouring concrete: the concrete pouring adopts a layered and block pouring method, and the culvert is uniformly poured from bottom to top until the culvert is kept horizontal.

As a preferred technical scheme of the invention, in the step (5), the temperature stress is strictly controlled after the concrete is poured, the differences between the internal temperature and the surface temperature of the concrete and between the surface temperature and the ambient temperature are controlled within 25 ℃, the peak value of the temperature rise of the central point in the concrete is generated within 3 days after the concrete is poured, and the temperature of the interior of the concrete is reduced after 3 days; after concrete pouring, adopting a plastic film for water retention and maintenance and using grass for heat preservation; the curing days are not less than 14 days.

As a preferable technical scheme of the invention, the masonry engineering in the step (6):

1) Paving and constructing a gravel cushion layer and a reversed filter layer: filling the broken stone cushion layer and the inverted filter layer by a layered paving method, wherein the paving thickness of each layer of broken stones is 20-30cm, water drain holes are reserved at concrete pouring positions on the upper parts of the broken stone cushion layer and the inverted filter layer during construction, and the broken stones with the length of 2-4cm are filled to play a role in inverted filtering;

2) And (3) grouting and building block stone construction: the mortar masonry is built by a mortar paving method, the mortar thickness is 30-50mm, soil on the surface of the stone is cleaned and sprayed with water to be wet before mortar paving, so that the surface of the stone can fully collect water, accumulated water is not remained, and the mortar joint thickness is generally 20-30 mm.

As a preferable technical scheme of the invention, in the step (6), the content of particles smaller than 0.1cm in the crushed stone is less than 5%, the content of particles with over diameter is not more than 5%, the content of particles with sub diameter is not more than 8%, and the content of needle-shaped particles is not more than 15%.

Compared with the prior art, the invention has the beneficial effects that: the water gate construction method based on the BIM system; through the application of the BIM system, the three-dimensional model is built for the water gate lofting data, so that constructors can know the water gate data more visually and accurately, the quality of the concrete is controlled more strictly, the water gate substrate is ensured to have reliable certainty, the safety is improved, the service life is prolonged, meanwhile, heavy machinery is reasonably applied, and the construction period is shortened;

1. the sluice model is established through the BIM system, so that construction personnel can know data such as the specific structure of the sluice, the size of a building and the like more visually;

2. the quality of concrete is strictly controlled, and the concrete construction method is adopted, so that the water gate base has reliable stability after the concrete engineering is finished, the water flow pressure in the flood season is responded, and the overall quality of the water gate is ensured;

3. the period of site operation can be reduced through the use of various machines, and the overall progress of sluice engineering is accelerated.

Detailed Description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The technical scheme of the invention is as follows: a water gate construction method based on a BIM system comprises the following steps:

step (2) temporary cofferdam construction, adopting an occupancy method to increase filling, adopting a one-side or two-side simultaneous occupancy method to perform construction, adopting an excavating machine to take soil and increase filling through the occupancy method, adopting a layered soil feeding method after the cofferdam is filled and exceeds the water surface, controlling the thickness of a single layer to be 20cm, controlling the particle size of soil materials to be not more than 5cm, paving waterproof cloth on the water facing side of the outer cofferdam after the cofferdam is filled, paving a reverse filter layer at the inner side slope angle of the peripheral weir by using bagged stones, wherein the height of the reverse filter layer is 1 meter, and the width of the reverse filter layer is 0.5 meter;

and (3) earthwork engineering, which comprises two steps of earthwork excavation and earthwork backfilling, wherein the earthwork engineering is carried out by adopting a model PC240 excavator matched with a dump truck:

a. excavating earthwork: before excavation of the foundation pit earthwork, the elevation control column is arranged according to the step (1), a layered excavation method is adopted, drainage ditches need to be arranged layer by layer, and water accumulation pits can be arranged inside the drainage ditches so as to facilitate drainage through a water pump and ensure that no water accumulation is formed in the side slope range;

b. backfilling earthwork: and the earthwork compaction of the foundation pit is carried out by rolling by using crawler wheels of a bulldozer, and simultaneously, the earthwork compaction is carried out by using a frog tamper with connecting belts at the bottoms of buildings such as a power transformation room, a duty room and the like, so that the compaction coefficient is not lower than 0.93.

And (4) steel bar engineering, lofting according to construction specifications and design requirements, blanking, straightening, derusting, shearing, bending and other processing, and binding the steel bar by adopting iron wires:

a. and (3) detection of the quality of the steel bars: ensure the steel bar surface to be smooth and not damaged, if the surface has rusty stains or other pollution, the steel bar surface needs to be removed before use, ensure the steel bar to be straight, and have no local bending phenomena

b. Straightening the steel bars: straightening the steel bars by adopting a cold drawing method, wherein the cold drawing rate of the I-grade steel bars is not more than 4%; the cold drawing rate of the II-grade and III-grade steel bars is not more than 1 percent

c. And (3) bundling of the steel bars: the binding wire adopts No. 20 iron wires, and two groups of iron wires are twisted into four strands for binding, so that the binding structure is ensured to be in a pressed area.

And (5) concrete engineering, wherein the concrete pouring adopts line production and is continuously poured according to a construction plan:

a. selection and weighing control of raw materials: the concrete engineering cement adopts No. 32.5 cement, and the water content of the detected sand needs to be controlled at 10 percent through a special metering device;

b. mixing concrete: stirring by using a JDY-350 mixer, and detecting the water content of sand and stone before construction;

c. and (3) concrete transportation: the concrete transportation adopts a wheel vehicle for transportation, the horizontal transportation distance is not more than 150 meters, the transportation road surface is required to be smooth, the segregation of concrete and objects is prevented, the initial setting of the concrete is prevented, and the plasticity of the concrete is reduced;

d. pouring concrete: the concrete pouring adopts a layered and block pouring method, and the culvert is uniformly poured from bottom to top until the culvert is kept horizontal.

Step (6) masonry engineering, including the paving construction of rubble bedding course, inverted filter and the construction of grouted rubble stones:

a. paving and constructing a gravel cushion layer and a reversed filter layer: filling the broken stone cushion layer and the inverted filter layer by a layered paving method, wherein the paving thickness of each layer of broken stones is 20cm, water drain holes are reserved at concrete pouring positions on the upper parts of the broken stone cushion layer and the inverted filter layer during construction, and the broken stones of 2cm are filled to play a role in inverted filtering;

b. and (3) grouting and building block stone construction: the grouted stone is built by adopting a mortar paving method, the consistency of the mortar is 30mm, the soil on the surface of the stone is cleaned and sprayed with water to be wet before the mortar is paved, so that the surface of the stone can fully collect water, accumulated water is not remained, and the thickness of a mortar joint is generally 20mm.

In the step (6), the content of particles smaller than 0.1cm in the macadam is less than 5%, the content of over-diameter particles is not more than 5%, the content of sub-diameter particles is not more than 8%, and the content of needle-shaped particles is not more than 15%.

The technical scheme of the invention is as follows: an embodiment of a water gate construction method based on a BIM system comprises the following steps:

measuring lofting, and determining an engineering construction control sideline, a reference point, a datum line and a level point; and a preliminary sluice model is established through a BIM system.

And (2) constructing the temporary cofferdam by adopting an occupancy method for filling, wherein the construction can be carried out by adopting a single-side or double-side simultaneous occupancy method, the filling is carried out by adopting an excavating machine to take earth and adopting the occupancy method, when the cofferdam is filled to exceed the water surface, a layering and earthing method is adopted, the thickness of a single layer is controlled to be 30cm, the particle size of an earth material is not more than 5cm, waterproof cloth is laid on the water-facing side of the outer cofferdam after the filling of the cofferdam is finished, a reversed filter layer is laid at the inner side slope angle of the peripheral weir by using bagged stones, and the height of the reversed filter layer is 1.2 m and the width of the reversed filter layer is 0.6 m.

a. excavating earthwork: before excavation of the foundation pit earthwork, the elevation control column is arranged according to the step (1), a layered excavation method is adopted, drainage ditches need to be arranged layer by layer, and water accumulation pits can be arranged inside the drainage ditches so as to facilitate drainage through a water pump and ensure that accumulated water cannot be formed in a side slope range;

a. and (3) detection of the quality of the steel bars: ensure the surface of the steel bar to be flat and not damaged, if rust or other pollution exists on the surface, the steel bar needs to be removed before use, ensure the steel bar to be flat and straight, and have no phenomena of local bending and the like

And (5) concrete engineering, wherein the concrete pouring adopts line production, and continuous pouring is carried out according to a construction plan:

a. selection and weighing control of raw materials: the concrete engineering cement adopts No. 32.5 cement, and the water content of the detected sand needs to be controlled at 12 percent through a special metering device;

a. paving and constructing a gravel cushion layer and a reversed filter layer: filling the broken stone cushion layer and the inverted filter layer by a layered paving method, wherein the paving thickness of each layer of broken stones is 25cm, water drain holes are reserved at concrete pouring positions on the upper parts of the broken stone cushion layer and the inverted filter layer during construction, and the broken stones with the length of 3cm are filled to play a role in inverted filtering;

b. and (3) grouting and building block stone construction: the grouted stone is built by a mortar paving method, the thickness of the mortar is 40mm, soil on the surface of the stone is cleaned and sprayed with water to be wet before the mortar is paved, so that the surface of the stone is fully soaked with water, accumulated water is not remained, and the thickness of a mortar joint is generally 30mm.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A sluice construction method based on a BIM system is characterized by comprising the following steps:

the earthwork engineering comprises two steps of earthwork excavation and earthwork backfilling, wherein the earthwork engineering is carried out by adopting a model PC240 excavator matched with a dump truck;

step (4) steel bar engineering, lofting and blanking processing are carried out according to construction specifications and design requirements, wherein the lofting and blanking processing comprises straightening, derusting, shearing, bending and other processing, and iron wires are adopted for binding the steel bar;

and (6) masonry engineering, which comprises paving construction of a gravel cushion layer and a reverse filter layer and mortar masonry block stone construction.

2. The method for constructing the sluice based on the BIM system as claimed in claim 1, wherein the temporary cofferdam in the step (2) is constructed by adopting an excavating machine to take out soil and increase the filling by adopting an encroachment method, when the cofferdam is filled to exceed the water surface, a method of layering soil is adopted, the thickness of a single layer is controlled to be 20-30cm, and the particle size of soil materials is not more than 5cm.

3. The method for constructing a sluice based on a BIM system as claimed in claim 1, wherein after the cofferdam is filled in step (2), waterproof cloth is laid on the water-facing side of the outer cofferdam, and the inner side slope of the peripheral weir is provided with a reversed filter layer with bagged stones, wherein the reversed filter layer has a height of 1-1.5 m and a width of 0.5-0.8 m.

4. The method for constructing a sluice based on a BIM system as claimed in claim 1, wherein the earthwork in the step (3);

1) Excavating earthwork: before excavation of the foundation pit earthwork, the elevation control column is arranged according to the step (1), a layered excavation method is adopted, drainage ditches need to be arranged layer by layer, and water accumulation pits can be arranged inside the drainage ditches so as to facilitate drainage through a water pump and ensure that accumulated water cannot be formed in a side slope range;

5. The BIM system-based sluice construction method according to claim 1, wherein the step (4) of steel bar engineering,

1) And (3) detection of the quality of the steel bars: ensure the surface of the steel bar to be flat and not damaged, if rust or other pollution exists on the surface, the steel bar needs to be removed before use, ensure the steel bar to be flat and straight, and have no phenomena of local bending and the like

2) Straightening the steel bars: straightening the steel bars by adopting a cold drawing method, wherein the cold drawing rate of the I-grade steel bars is not more than 4%; the cold drawing rate of the II-grade and III-grade steel bars is not more than 1 percent

6. The method for constructing the sluice based on the BIM system as claimed in claim 4, wherein the concrete engineering of the step (5):

3) Concrete transportation: the concrete transportation adopts a wheel vehicle for transportation, the horizontal transportation distance is not more than 150 meters, the transportation road surface is required to be smooth, the segregation of concrete and objects is prevented, the initial setting of the concrete is prevented, and the plasticity of the concrete is reduced;

4) Pouring concrete: the concrete pouring adopts a layered block pouring method, and the culvert is uniformly poured from bottom to top until the culvert is kept horizontal.

7. The method for constructing the sluice based on the BIM system as claimed in claim 4, wherein the temperature stress is strictly controlled after the concrete is poured in the step (5), the differences between the internal temperature and the surface temperature of the concrete and between the surface temperature and the ambient temperature are controlled within 25 ℃, the peak value of the temperature rise of the central point in the concrete is generated within 3 days after the concrete is poured, and the temperature of the interior of the concrete is reduced after 3 days; after concrete pouring, adopting a plastic film for water retention and maintenance and using grass for heat preservation; the curing time is not less than 14 days.

8. The method for constructing the sluice based on the BIM system as claimed in claim 1, wherein the step (6) masonry construction comprises the following steps:

9. The method for constructing the sluice based on the BIM system, according to the claim 4, wherein in the step (6), the particle content of the crushed stones smaller than 0.1cm is less than 5%, the particle content of the crushed stones is not more than 8%, and the particle content of the crushed stones is not more than 15%.