CN114718311B - Air extraction pump for opening holes in steel column base plate and grouting construction method thereof - Google Patents
Air extraction pump for opening holes in steel column base plate and grouting construction method thereof Download PDFInfo
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- CN114718311B CN114718311B CN202210232001.3A CN202210232001A CN114718311B CN 114718311 B CN114718311 B CN 114718311B CN 202210232001 A CN202210232001 A CN 202210232001A CN 114718311 B CN114718311 B CN 114718311B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 64
- 239000010959 steel Substances 0.000 title claims abstract description 64
- 238000000605 extraction Methods 0.000 title claims abstract description 17
- 238000010276 construction Methods 0.000 title abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000009415 formwork Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
本发明公开了一种用于钢柱脚底座板开孔抽气的抽气泵及其灌浆施工方法，包括可轴向伸缩的波纹气筒和设置于波纹气筒上的用于与钢柱脚底座板上的排气孔连接的吸气端和吸气后将波纹气筒内的气体排出的出气端，所述吸气端设置有在气压作用下打开或关闭吸气端的进气阀瓣，所述出气端设置有在外力作用下打开出气端进行排气的出气阀瓣；以最简单快捷的方式辅助钢柱脚底板与混凝土基础二次灌浆过程中能完全排出二次灌浆液与钢柱脚底座板之间存在的空气泡，保障底座板与基础接触面的稳定性。
The present invention discloses an air extraction pump for extracting air from a hole in a steel column foot base plate and a grouting construction method thereof, comprising an axially retractable corrugated air cylinder and an air suction end arranged on the corrugated air cylinder and used to be connected to an exhaust hole on the steel column foot base plate, and an air outlet end for exhausting the gas in the corrugated air cylinder after suction, wherein the air suction end is provided with an air inlet valve flap which opens or closes the air suction end under the action of air pressure, and the air outlet end is provided with an air outlet valve flap which opens the air outlet end for exhaust under the action of an external force; the air bubbles existing between the secondary grouting liquid and the steel column foot base plate can be completely discharged during the secondary grouting process of the steel column foot base plate and the concrete foundation in the simplest and quickest way, thereby ensuring the stability of the contact surface between the base plate and the foundation.
Description
Technical Field
The invention relates to the field of concrete grouting and air extraction, in particular to an air pump for air extraction of a steel column sole seat plate opening and a grouting construction method thereof.
Background
And the steel column axis and the elevation of the steel column base plate are tightly contacted in an allowable standard range by a secondary grouting construction mode between the steel column base plate and the concrete foundation. Secondary grouting is generally performed in three ways: the gravity grouting, the high-level funnel grouting and the pressure grouting have advantages and disadvantages, but air bubbles existing between the secondary grouting liquid and the steel column sole seat plate cannot be completely discharged, and the stability of the contact surface of the seat plate and the foundation can be influenced for a long time.
Therefore, a method for opening holes on the steel column sole seat plate for air extraction and grouting is needed to assist the method to discharge residual air bubbles, so that the stability of the contact surface between the seat plate and a foundation is ensured.
Disclosure of Invention
Therefore, the invention aims to overcome the defects in the prior art, and provides an air pump for opening and exhausting a steel column sole seat plate and a grouting construction method thereof, which can completely discharge air bubbles existing between secondary grouting liquid and the steel column sole seat plate in the secondary grouting process of a steel column sole plate and a concrete foundation in a simplest and quick way, and ensure the stability of the contact surface between the seat plate and the foundation.
The invention relates to an air pump for exhausting holes on a steel column sole seat plate, which comprises a corrugated air cylinder capable of axially stretching, an air suction end arranged on the corrugated air cylinder and used for being connected with an air exhaust hole on the steel column sole seat plate, and an air outlet end used for exhausting air in the corrugated air cylinder after air suction, wherein the air suction end is provided with an air inlet valve flap for opening or closing the air suction end under the action of air pressure, and the air outlet end is provided with an air outlet valve flap for opening the air outlet end for exhausting air under the action of external force;
Further, the air suction end comprises an air suction receiving end connected with the corrugated air cylinder and an air suction port arranged on the air suction receiving end, and the air suction receiving end is provided with an air suction valve clack which can open or close the air suction port in an opening and closing mode along the air suction port;
further, the air outlet end comprises an air outlet bearing end connected with the corrugated air cylinder and an air outlet arranged on the air outlet bearing end, and the air outlet bearing end is provided with an air outlet valve clack which can open or close the air outlet in a mode of moving up and down along the air outlet;
Further, an air outlet reticular baffle is arranged between the air outlet bearing end and the corrugated air cylinder, an air inlet reticular baffle is arranged between the air inlet bearing end and the corrugated air cylinder, and a spring I is axially arranged in a corrugated air cylinder cavity between the air outlet reticular baffle and the air inlet reticular baffle; a spring II is connected between the air outlet valve flap and the air outlet reticular baffle plate;
further, a pressing cap for pressing the air outlet valve clack to open the air outlet is arranged on the air outlet valve clack; the air outlet valve clack and the air inlet valve clack are made of rubber materials;
further, the springs I are three uniformly distributed along the corrugated inflator cavity; magnets closely contacted with the steel column sole seat plate are arranged along the edge of the air inlet.
The invention also discloses a method for opening holes on the steel column sole seat plate for air extraction and grouting, which comprises the following steps: a. treating a foundation grouting surface and a column base;
b. supporting the template and installing an air pump;
c. Grouting;
In the step c, when the liquid level of the slurry is about to be contacted with the lower surface of the steel column sole seat plate, the air suction pump starts to suck air from the air exhaust hole, and grouting is continued until the slurry is diffused to the thickness of the steel column sole seat plate;
Further, in step c, the steel column shoe plate can be suitably tapped, so that the air bubbles at the contact surface between the slurry and the steel column shoe plate can be oscillated.
The beneficial effects of the invention are as follows: the air pump for the perforated air extraction of the steel column sole seat plate disclosed by the invention can completely discharge air bubbles existing between secondary grouting liquid and the steel column sole seat plate in the secondary grouting process of the steel column sole plate and the concrete foundation in a simplest and quick way, and ensures the stability of the contact surface of the base plate and the foundation.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of a negative pressure suction pump sucking air from an opening of a base plate;
FIG. 4 is a schematic diagram of the negative pressure suction pump exhausting from the top;
FIG. 5 is a cross-sectional view of the negative pressure suction pump in grouting construction;
Fig. 6 is a schematic view of the mounting structure of the form.
Detailed Description
FIG. 1 is a schematic diagram of the structure of the present invention; FIG. 2 is a cross-sectional view of FIG. 1; FIG. 3 is a schematic view of a negative pressure suction pump sucking air from an opening of a base plate; FIG. 4 is a schematic diagram of the negative pressure suction pump exhausting from the top;
fig. 5 is a sectional view of the negative pressure suction pump in grouting construction, and fig. 6 is a schematic view of a mounting structure of the form. As shown in the figure: the spring type negative pressure air pump for grouting the steel column sole seat plate 14 comprises an axially telescopic corrugated air cylinder 1, an air outlet end and an air suction end, wherein the air outlet end and the air suction end are arranged on the corrugated air cylinder 1, and the air suction end is provided with an air inlet valve 2 for opening or closing the air suction end under the action of air pressure; in the grouting process, the corrugated air cylinder 1 is compressed and the air suction end is tightly connected with the air exhaust hole 15, negative pressure is generated in the cavity of the corrugated air cylinder 1, some residual air bubbles at the lower part of the opening of the steel column sole seat plate 14 are converged at the air suction end and generate upward thrust to push away the air inlet valve clack 2 under the action of the external air pressure being larger than the pressure difference of the internal air pressure of the cavity, at the moment, the residual air bubbles at the lower part of the air suction port 6 enter the cavity of the corrugated air cylinder 1 to raise the air pressure in the cavity, the air suction is stopped along with the extension of three springs in the cavity of the corrugated air cylinder 1 to the limit, after the air pressure in the cavity of the corrugated air cylinder 1 is balanced with the external air pressure at the air suction port 6 and the spring force, the air inlet valve clack 2 is restored to cover the air suction port 6, and the air suction pump completes the air suction process from the opening of the steel column sole seat plate 14. In the air extraction process, the air outlet end is in a closed state. The corrugated inflator 1 is a conventional structure in the prior art, and will not be described in detail here. In the use process, the corrugated air cylinder 1 can be in a compressed state by axially pressing the corrugated air cylinder 1 through external force, and after the pressure is relieved, the corrugated sleeve can be axially stretched by the corrugated structure of the corrugated air cylinder 1, so that negative pressure is generated in the cavity. The air pump assists the air bubbles existing between the secondary grouting liquid and the sole seat plate 14 of the steel column 16 in the secondary grouting process of the sole plate 14 of the steel column 16 and the concrete foundation 17 in the simplest and quick way, and ensures the stability of the contact surface of the sole plate 14 and the foundation 17.
In this embodiment, the air outlet end is provided with an air outlet valve 3 for opening the air outlet end to exhaust under the action of external force; after the air extraction is completed, the air outlet end is used for air extraction, and at the moment, the air suction end is in a closed state due to the balance of internal and external pressure. The valve clack is opened to the end of giving vent to anger under the external force effect and is discharged, utilizes the specific pressure ripple sleeve that ripple inflator 1 can axial flexible, can do benefit to the gaseous discharge in the ripple sleeve chamber, then releases the external force of end of giving vent to anger and makes the valve clack 3 close the end of giving vent to anger to this completion exhaust process.
In this embodiment, the air suction end includes an air intake receiving end 4 connected with the corrugated air cylinder 1 and an air suction port 6 provided on the air intake receiving end 4, and the air intake receiving end 4 is provided with an air intake valve 2 for opening or closing the air suction port 6 in a manner of opening and closing along the air intake; the air suction port 6 can be a connecting pipeline, the air suction port 6 is tightly contacted with an opening of the steel column sole seat plate 14, the air inlet valve clack 2 is arranged at the joint of the air inlet receiving end 4 and the air suction port 6, and under the action that the external air pressure is greater than the air pressure difference in the cavity, the air suction port 6 can be converged and can generate upward thrust to push away the air inlet valve clack 2. Most of the air inlet valve clack 2 is made of rubber materials, at the moment, only one end of the air inlet valve clack 2 is fixed at the air inlet receiving end 4, the rest parts are not fixedly related, and the air inlet valve clack 2 can be attached to the air inlet 6 in a state of sealing the air inlet 6 in a natural state by utilizing the gravity of the air inlet valve clack 2 vertically downwards. Of course, the intake valve 2 may be made of other materials and may be rotatably provided on the intake receiving end 4 along the connecting end. When the external air pressure is greater than the air pressure in the cavity, the air inlet valve 2 is easily pushed away by the external air flow, air bubbles enter the cavity of the corrugated air cylinder 1 through the air inlet bearing end 4, the air pressure in the cavity of the corrugated air cylinder 1 is increased, after the air pressure in the cavity of the corrugated air cylinder 1 reaches the limit with the external air pressure at the air suction port 6 and the expansion of the corrugated air cylinder 1, the air inlet valve 2 is restored to cover the air suction port 6, and thus, the air pump completes an air suction process from the opening of the steel column sole seat plate 14.
In this embodiment, the air outlet end includes an air outlet receiving end 5 connected with the corrugated air cylinder 1 and an air outlet 7 disposed on the air outlet receiving end 5, and the air outlet receiving end 5 is provided with an air outlet valve 3 capable of opening or closing the air outlet 7 in a manner of moving up and down along the air outlet 7; during the air extraction process, the air outlet 7 is in a closed state. In the exhaust process, the air suction port 6 is in a closed state, and the air outlet valve flap 3 moves vertically along the air outlet 7 so as to open the air outlet 7.
In this embodiment, an air outlet reticular baffle 9 is disposed between the air outlet receiving end 5 and the corrugated air cylinder 1, an air inlet reticular baffle 8 is disposed between the air inlet receiving end 4 and the corrugated air cylinder 1, and a spring I10 is axially disposed in the cavity of the corrugated air cylinder 1 between the air outlet reticular baffle 9 and the air inlet reticular baffle 9; a spring II 11 is connected between the air outlet valve flap 3 and the air outlet reticular baffle 9; the air outlet valve flap 3 is provided with a pressing cap 12 for pressing the air outlet valve flap 3 to open the air outlet 7; the outlet mesh partition 9 and the inlet mesh partition 8 may be of a rigid material. After the suction port 6 of the suction pump is tightly contacted with the polished smooth and flat column base plate opening, the compressed suction pump is loosened, and the key cap at the top of the suction pump is not under the action of upper pressure and is under the extension action of the spring II 11 below the key cap, so that the air outlet valve clack 3 can completely block the air outlet 7; the spring I10 in the cavity of the corrugated inflator 1 of the air pump is not stretched under the action of the pressure at the upper part, so that negative pressure is generated in the cavity, as the air suction port 6 is tightly contacted with the opening part of the steel column sole seat plate 14, some residual air bubbles at the lower part of the opening part of the steel column sole seat plate 14 are converged towards the air suction port 6 and push away the air inlet valve clack 2 under the action of the pressure difference of the external air pressure which is larger than the internal air pressure of the cavity, at the moment, the residual air bubbles at the lower part of the air suction port 6 enter the cavity of the corrugated inflator 1, the air suction is stopped along with the fact that the stretching of the spring I10 in the cavity of the corrugated inflator 1 reaches the limit, after the air pressure in the cavity of the corrugated inflator 1 is balanced with the external air pressure at the air suction port 6 and the spring elasticity, the air suction valve clack 2 is restored to cover the air suction port 6, and the air suction pump finishes the air suction process from the opening part of the steel column sole seat plate 14. The solid black arrows in fig. 3 indicate upward release of pressure, and the open arrows indicate upward airflow.
After the air pump finishes the air extraction process from the opening of the steel column sole seat plate 14, after the pressure is downwards applied from the pressing cap 12 at the top of the air pump, the spring II 11 below the pressing cap 12 is compressed and contracted, so that the air outlet valve 3 leaves the air outlet 7; the spring I10 in the cavity of the corrugated inflator 1 of the air pump is contracted under the action of the upper pressure, and because the air in the cavity of the corrugated inflator 1 is compressed at the same time, the generated air pressure presses the air inlet valve 2 to press the air inlet 6, so that the air or grouting material does not flow at the lower part of the air inlet 6 and the opening of the steel column sole seat plate 14; under the condition that the air pressure in the cavity is continuously compressed, when the air pressure is larger than the pressure at the air outlet 7, the air in the cavity is automatically discharged from the air outlet 7, and when the spring I10 in the cavity of the corrugated inflator 1 is compressed to the limit, the air pump finishes the process of exhausting air from the top. As shown in fig. 4, the solid black arrows indicate the downward pressure, and the hollow arrows indicate the upward discharge of the air flow from the air outlet 7. The spring type air pump can realize the purpose of discharging residual air bubbles on the contact surface of the steel column sole seat plate 14 and grouting materials through one complete air extraction and exhaust process in a reciprocating way.
In the embodiment, the springs I10 are three uniformly distributed along the cavity of the corrugated inflator 1; the stability is better.
In this embodiment, magnets are provided along the air inlet rim in close contact with the steel pillar plantar saddle 14, the magnets being provided so as to facilitate close contact between the air inlet 6 and the open mouth of the steel pillar plantar saddle 14. During the suction process, the steel column plantar plate 14 is suitably tapped, thereby oscillating the interface air bubbles between the slurry and the plate. Because the suction pump pumps air from the vent hole 15 to generate negative pressure, the slurry and residual air bubbles flow to the vent hole 15 until the slurry is discharged from the vent hole 15, and meanwhile, the slurry around the steel column sole seat plate 14 can be seen to gradually sink, when the slurry is not sunk after sinking to a stable stage, the suction can be stopped, and the residual air bubbles are discharged.
The invention also discloses a method for opening holes on the steel column sole seat plate for air extraction and grouting, which comprises the following steps: a. treating a foundation grouting surface and a column base;
b. a template 18 is supported and a suction pump is installed;
c. Grouting;
in the embodiment, in the step a, the foundation grouting surface is subjected to roughening treatment and an exhaust hole is formed in a steel column sole seat plate, in the step b, a template 18 is supported according to a grouting area, then an air pump is arranged at the exhaust hole on the steel column sole seat plate, in the step c, when the liquid level of the slurry is about to be contacted with the lower surface of the steel column sole seat plate, the air pump is used for exhausting air from the exhaust hole, and grouting is continued until the slurry is diffused to the thickness of the steel column sole seat plate; in step c, the steel column sole plate can be suitably and lightly tapped, so that the air bubbles at the contact surface between the slurry and the steel column sole plate can be oscillated.
The specific construction process flow is as follows:
the foundation grouting surface and column base treatment-support template 18 and the installation of a suction pump-grouting-curing-stripping cleaning.
1. Foundation grouting surface and column base treatment
Firstly, roughening a foundation grouting surface, opening an exhaust hole (the edge of the exhaust hole is required to be polished to be smooth and flat within the range of 20 mm) on a steel column sole seat plate, cleaning a grouting area, watering and wetting a grouting part within 24 hours before grouting, and sucking accumulated water for 1 hour before grouting.
2. Formwork 18 and mounting suction pump
1) Template 18 is schematically supported. The gaps between the form 18 and the foundation, and between the form 18 and the form 18, must be sealed with tape to the extent that the entire form 18 is watertight.
2) The horizontal distance between the template 18 and the periphery of the column base is controlled to be about 50mm, so that grouting is facilitated.
3) The elevation of the top of the form 18 is 50mm above the upper surface of the lower edge of the column shoe base plate.
4) In the formwork supporting process, if the column ribs influence the formwork 18 to be in place, grouting can be performed by expanding grouting range, and the formwork 18 is supported at the periphery of the column main ribs, as shown in fig. 6.
5) And the air suction pump is arranged at the air exhaust hole on the base plate of the column base, so that the joint surface of the air suction nozzle surface of the air suction pump and the air exhaust hole is tightly and air-tight, and residual air between the contact surface of grouting material and the base plate is conveniently pumped by the air suction pump.
6) To ensure that no leakage occurs during grouting, the form 18 is sealed with tape at the joints, and to prevent the form 18 from deforming as a whole, the four-sided form 18 is integrally connected using nails and battens.
3. Grouting
1) Adding water into the grouting material according to the proportion, and stirring (mechanical stirring for 2-3 min and manual stirring for more than 5 min).
2) The evenly stirred grouting material is poured into the grouting part from one direction, and can be guided by bamboo strips or steel bars when necessary.
3) When the liquid level of the slurry is about to be in contact with the lower surface of the base plate, the air suction pump is started to suck air from the air exhaust hole, and grouting is continued until the slurry is diffused into the thickness of the base plate.
4) At this time, the shoe base plate can be gently tapped appropriately to oscillate the air bubbles at the interface between the slurry and the base plate. Because the suction pump pumps air from the exhaust hole to generate negative pressure, the slurry and the residual air bubbles flow to the exhaust hole until the slurry is discharged from the exhaust hole, the slurry around the column base can be seen to gradually sink, and when the slurry does not sink after sinking to a stable stage, the suction can be stopped, so that the residual air bubbles are discharged.
5) And (3) immediately spraying a curing agent or covering a plastic film for curing for 3-7 days after the construction is finished.
Grouting requirements
1) During grouting, grouting is performed from multiple points on one side or two adjacent sides until the slurry is diffused to the base plate, so that exhaust in the grouting process is facilitated, and grouting is not performed from four sides at the same time.
2) After the grouting is started, the grouting is continuously performed, the grouting cannot be interrupted, and the grouting time is shortened as much as possible.
3) And (5) strictly prohibiting mechanical vibration in the grouting process.
4) And after grouting of the column feet is finished, a spatula is used for calendaring the surface of the grouting layer when the slurry is initially set.
4. Curing
1) After grouting, the upper steel structure and the grouting layer should not be subjected to vibration or collision within 24 hours.
2) After the grouting material is finally solidified, water is sprayed for maintenance, 4-6 times per day.
3) The curing temperature is preferably above 150 ℃.
4) Curing time is generally more than 7 days.
5. Form removal
The demolding can be carried out 24 hours after pouring is finished, and water spraying maintenance is continued after the demolding.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (3)
1. A method for opening holes on a steel column sole seat plate for air extraction and grouting is characterized in that: the method comprises the following steps: a. and (3) treating a foundation grouting surface and a column base: roughening the foundation grouting surface and opening an exhaust hole on the steel column sole seat plate;
b. and (3) supporting the template and installing an air pump: supporting the template according to the grouting area, and then installing an air pump at an air exhaust hole on the steel column sole seat plate;
c. Grouting: when the liquid level of the slurry is about to contact with the lower surface of the steel column sole seat plate, starting to exhaust air from the air exhaust hole by using an air exhaust pump, and simultaneously continuing grouting until the slurry is diffused to the thickness of the steel column sole seat plate;
In the step b, the air pump comprises an axially telescopic corrugated air cylinder, an air suction end and an air outlet end, wherein the air suction end is arranged on the corrugated air cylinder and used for being connected with an air exhaust hole on a steel column sole seat plate, the air outlet end is used for discharging air in the corrugated air cylinder after air suction, the air suction end comprises an air inlet receiving end connected with the corrugated air cylinder and an air suction port arranged on the air inlet receiving end, and the air inlet receiving end is provided with an air inlet valve clack capable of opening or closing the air suction port in an opening and closing mode along the air inlet; the air outlet end comprises an air outlet bearing end connected with the corrugated air cylinder and an air outlet arranged on the air outlet bearing end, and the air outlet bearing end is provided with an air outlet valve clack which can open or close the air outlet in a mode of moving up and down along the air outlet; an air outlet reticular baffle is arranged between the air outlet bearing end and the corrugated air cylinder, an air inlet reticular baffle is arranged between the air inlet bearing end and the corrugated air cylinder, a spring I is axially arranged in the cavity of the corrugated air cylinder between the air outlet reticular baffle and the air inlet reticular baffle, and a spring II is connected between the air outlet valve flap and the air outlet reticular baffle;
the air outlet valve clack is provided with a pressing cap for pressing the air outlet valve clack to open the air outlet, and the air outlet valve clack and the air inlet valve clack are made of rubber materials;
After the air pump finishes the air extraction process from the opening of the steel column sole seat plate, after applying pressure downwards from the pressing cap at the top of the air pump, the spring II below the pressing cap is compressed and contracted, so that the air outlet valve leaves leave the air outlet; the spring I in the corrugated inflator cavity of the air pump is contracted under the action of the upper pressure, and because the air in the corrugated inflator cavity is compressed at the same time, the generated air pressure presses the air inlet valve to press the air inlet, so that the air inlet and the lower part of the opening of the steel column sole seat plate do not flow in the process of generating air or grouting materials; under the condition that the air pressure in the cavity is continuously compressed, when the air pressure is larger than the pressure at the air outlet, the air in the cavity is automatically discharged from the air outlet, and when the spring I in the cavity of the corrugated inflator 1 is compressed to the limit, the air pump finishes the process of discharging air from the top once;
In the step c, the grouting treatment steps are as follows:
1) Adding water into the grouting material according to the proportion requirement, and stirring;
2) Pouring the evenly stirred grouting material into a grouting part from one direction;
3) When the liquid level of the slurry is about to contact with the lower surface of the base plate, starting to suck air from the air exhaust hole by using an air sucking pump, and simultaneously continuing grouting until the slurry is diffused into the thickness of the base plate; at the moment, the column foot base plate can be properly and lightly beaten, so that the air bubbles on the contact surface between the oscillation slurry and the base plate can be generated, the suction pump can suck air from the exhaust hole to generate negative pressure, so that the slurry and the residual air bubbles flow to the exhaust hole until the slurry is discharged from the exhaust hole, the slurry on the periphery of the column foot base can be seen to gradually sink, and when the slurry is not sunk after sinking to a stable stage, the suction can be stopped, and the residual air bubbles are discharged.
2. The method for opening the holes on the steel column sole seat plate for air suction grouting according to claim 1, wherein the method comprises the following steps: the springs I are three evenly distributed along the corrugated inflator cavity.
3. The method for opening the holes on the steel column sole seat plate for air suction grouting according to claim 2, wherein the method comprises the following steps: magnets closely contacted with the steel column sole seat plate are arranged along the edge of the air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210232001.3A CN114718311B (en) | 2022-03-09 | 2022-03-09 | Air extraction pump for opening holes in steel column base plate and grouting construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN115387614B (en) * | 2022-08-30 | 2023-08-08 | 上海建工四建集团有限公司 | Telescopic pneumatic vibrator, vibrating device and use method of vibrating device |
| CN115446951B (en) * | 2022-08-30 | 2023-12-26 | 上海建工四建集团有限公司 | Pneumatic fluid filling and vibrating integrated equipment |
| CN115370155B (en) * | 2022-08-30 | 2023-10-31 | 上海建工四建集团有限公司 | Adduction type vibrating tube, air guide vibrating equipment and use method thereof |
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| CN2207343Y (en) * | 1994-09-12 | 1995-09-13 | 孙鹤年 | Manually-operated suction sealing packer |
| JP2000064618A (en) * | 1998-08-17 | 2000-02-29 | Ohbayashi Corp | Grouting method combined with vacuumizing method |
| CN113740517A (en) * | 2021-08-13 | 2021-12-03 | 上海宝冶集团有限公司 | Test device and test method for detecting grouting forming quality of steel pipe column base |
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| FR1377945A (en) * | 1963-12-26 | 1964-11-06 | Pirelli | Bellows for inflating pneumatic objects such as boats, mattresses and the like |
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| CN2050096U (en) * | 1988-11-23 | 1989-12-27 | 谭永强 | Piano type booster pump |
| JP3084513B2 (en) * | 1997-02-19 | 2000-09-04 | 株式会社日立製作所 | Vacuum pump and driving method thereof |
| DE20207740U1 (en) * | 2002-05-15 | 2002-08-22 | Heimomed Heinze GmbH & Co. KG, 50170 Kerpen | Vacuum generating device |
| KR20200002131U (en) * | 2019-03-20 | 2020-10-05 | 박제열 | vacuuming device of plastic bag |
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| US4858478A (en) * | 1988-08-16 | 1989-08-22 | Mine Safety Appliances Company | Bellows type hand-operated air sampling pump |
| CN2207343Y (en) * | 1994-09-12 | 1995-09-13 | 孙鹤年 | Manually-operated suction sealing packer |
| JP2000064618A (en) * | 1998-08-17 | 2000-02-29 | Ohbayashi Corp | Grouting method combined with vacuumizing method |
| CN113740517A (en) * | 2021-08-13 | 2021-12-03 | 上海宝冶集团有限公司 | Test device and test method for detecting grouting forming quality of steel pipe column base |
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