CN110593309A - Construction method of full-hall scaffold supporting system with slope comprehensive pipe gallery - Google Patents
Construction method of full-hall scaffold supporting system with slope comprehensive pipe gallery Download PDFInfo
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- CN110593309A CN110593309A CN201910929335.4A CN201910929335A CN110593309A CN 110593309 A CN110593309 A CN 110593309A CN 201910929335 A CN201910929335 A CN 201910929335A CN 110593309 A CN110593309 A CN 110593309A
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- short steel
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- 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
- E04G1/00—Scaffolds primarily resting on the ground
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- Mining & Mineral Resources (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention relates to a construction method of a full-hall scaffold supporting system of a comprehensive pipe gallery with a slope, which comprises the following steps: a. binding reinforcing steel bars of a bottom plate of the comprehensive pipe gallery, wherein the upper-layer reinforcing steel bars comprise upper distribution reinforcing steel bars forming a certain angle with the horizontal plane and upper horizontal reinforcing steel bars parallel to the horizontal plane; b. determining the installation position of the short steel bar; c. respectively pulling a standard line parallel to the upper horizontal bars above each upper horizontal bar, enabling the short steel bars to be perpendicular to the standard lines and binding the short steel bars on the upper horizontal bars; d. checking and accepting the installed short steel bars; e. pouring bottom plate concrete; f. after the concrete is solidified, inserting the upright rods on the short steel bars exposed out of the bottom plate, and erecting a scaffold supporting system; g. and after the scaffold is used, the scaffold is dismantled, the part of the short steel bar exposed out of the concrete surface is cut off by using a cutting machine, and the upper surface of the bottom plate is trowelled by using cement mortar. The full hall scaffold support system constructed by the construction method is good in stability, safe and reliable, and can bear large force.
Description
Technical Field
The invention relates to a scaffold construction method, in particular to a construction method of a full scaffold support system of a comprehensive pipe gallery with a slope.
Background
The utility tunnel is an underground urban pipeline utility tunnel, namely, a tunnel space is built underground in a city, various engineering pipelines such as electric power, communication, gas, heat supply, water supply and drainage and the like are integrated, a special overhaul port, a lifting port and a monitoring system are arranged, unified planning, unified design, unified construction and management are implemented, and the utility tunnel is an important infrastructure and a lifeline for guaranteeing urban operation.
But the utility tunnel often meets the condition of taking the slope in specific work progress, when the slope ratio is less than 1: 0.4, because the pole setting of scaffold frame support system all is basically placed subaerial, full hall scaffold frame support system's stability can reduce greatly, and this system can have very big potential safety hazard. And the pole setting of scaffold frame support system of prior art is perpendicular to ground, and when meetting the sloping surface, the pole setting is perpendicular to domatic, but its direction of force is perpendicular to the horizontal plane, and the direction of force of pole setting is inconsistent in its length direction, even rely on setting up the bridging and diagonal brace to consolidate the system when the construction, but this kind of mode can not fundamentally solve the unstable problem of scaffold frame support system, and especially when full hall scaffold frame atress is great, its stability still can not guarantee, has great potential safety hazard.
Disclosure of Invention
The invention aims to provide a construction method of a full-hall scaffold supporting system of a comprehensive pipe gallery with a slope, and aims to solve the problems that an existing full-hall scaffold supporting system of the comprehensive pipe gallery with the slope is poor in stability and has potential safety hazards.
The invention is realized by the following steps: a construction method of a full-hall scaffold supporting system of a comprehensive pipe gallery with a slope comprises the following steps:
a. binding upper and lower layers of reinforcing steel bars of a bottom plate of the comprehensive pipe gallery, wherein the upper layer of reinforcing steel bars comprise upper distribution ribs which form a certain angle with the horizontal plane and upper horizontal ribs which are arranged along the upper distribution ribs and are parallel to the horizontal plane, and the upper horizontal ribs are perpendicular to the upper distribution ribs;
b. determining the installation position of the short steel bar, and determining the position of the upright post of the full-hall scaffold along the straight line where the upper horizontal steel bar is located, wherein the position of the upright post of the full-hall scaffold is the installation position of the short steel bar;
c. respectively pulling a standard line parallel to the upper horizontal bars above each upper horizontal bar, leaning a short steel bar on the standard line and the upper horizontal bar at the installation position of each short steel bar, enabling the short steel bar to be perpendicular to the standard line and binding the short steel bar on the upper horizontal bar;
d. the short steel bars after being installed are checked and accepted, so that the short steel bars are ensured to be positioned correctly and connected with the upper horizontal steel bars firmly;
e. pouring the bottom plate concrete to enable the concrete to submerge the lower part of the short steel bar;
f. after the concrete is solidified, inserting the upright rods on the short steel bars exposed out of the bottom plate, and erecting a scaffold supporting system;
g. and after the scaffold is used, the scaffold is dismantled, the part of the short steel bar exposed out of the concrete surface is cut off by using a cutting machine, and the upper surface of the bottom plate is trowelled by using cement mortar.
The short reinforcing steel bars are exposed to 250 ~ 300mm of the upper surface of the bottom plate.
The lower floor's reinforcing bar includes and personally submits the lower distribution muscle of certain angle and follows with the level the lower distribution muscle is arranged and is on a parallel with the lower horizontal muscle of horizontal plane, lower horizontal muscle and lower distribution muscle mutually perpendicular, and every the lower horizontal muscle is located same vertical plane with the last horizontal muscle that corresponds.
The short reinforcing steel bars are bound on the upper horizontal reinforcing steel bars and the lower horizontal reinforcing steel bars at the same time.
In the step c, when the short steel bars are bound, a right-angle guiding rule is used to lean against the standard line and the short steel bars so as to ensure that the short steel bars are perpendicular to the standard line.
The standard wire is made of steel wire.
According to the invention, the short steel bars vertical to the horizontal plane are bound on the bottom plate steel bars, the vertical rods of the full scaffold are inserted into the short steel bars, and the scaffold support system is erected, so that the vertical rods of the scaffold are vertical to the horizontal plane, the weight of the whole scaffold vertically acts on the bottom plate of the comprehensive pipe gallery along the direction of the vertical rods of the scaffold, the vertical rods of the scaffold can bear enough force, meanwhile, the lower parts of the short steel bars are fixed on the bottom plate of the comprehensive pipe gallery, when the force is larger, the short steel bars can still bear the force from the vertical rods of the scaffold, the stability of the scaffold support system is ensured, and the instability of the scaffold support system caused by the slope of.
The construction method is combined with the construction of the bottom plate of the comprehensive pipe gallery, the vertical short steel bars are bound on the steel bars of the bottom plate when the steel bars of the bottom plate are bound, after the bottom plate is poured, the upper surfaces of the upper parts of the short steel bars, which are exposed out of the bottom plate, are used for installing a scaffold support system, until the scaffold support system is removed, the exposed parts of the short steel bars are cut off, and the upper surface of the bottom plate of the comprehensive pipe gallery is leveled, so that the appearance of the bottom plate of the comprehensive pipe gallery is the same as that of a conventional comprehensive pipe gallery.
The full-hall scaffold support system built by the construction method is good in stability, safe and reliable, can bear large force, and is suitable for building full-hall scaffold systems of comprehensive pipe galleries and the like with certain gradients.
Drawings
Fig. 1 is a schematic view of the bottom plate rebar and the short rebar of the present invention.
Fig. 2 is a top view of fig. 1.
Figure 3 is a schematic view of the pole of the present invention mounted on a short reinforcing bar.
In the figure: 1. a base plate; 2. distributing steel bars on the steel bars; 3. upper horizontal ribs; 4. a lower distribution rib; 5. a lower horizontal rib; 6. short reinforcing steel bars; 7. and (6) erecting a rod.
Detailed Description
As shown in fig. 1, 2 and 3, the construction method of the present invention includes the steps of:
a. the upper and lower layer reinforcing bar of ligature utility tunnel bottom plate 1, upper reinforcing bar include personally submit certain angle's upper distribution muscle 2 and follow upper distribution muscle 2 and arrange and be on a parallel with the last horizontal muscle 3 of horizontal plane, upper distribution muscle 2 mutually perpendicular with upper distribution muscle 3. The upper distribution rib 2 is provided with a plurality of side-by-side, the upper horizontal rib 3 is distributed along the upper distribution rib 2, and the upper horizontal rib 3 is bound on the upper distribution rib 2 to form a grid surface which is at a certain angle with the horizontal ground.
b. And determining the installation position of the short steel bars 6, determining the position of the full-hall scaffold upright rod 7 along the straight line where the upper horizontal bar 3 is located, wherein the position of the full-hall scaffold upright rod 7 is the installation position of the short steel bars 6. Because 1 reinforcing bar of bottom plate is the higher reticular steel bar structure of density, full hall scaffold frame arranges the requirement that can satisfy the scaffold frame system along last level muscle 3.
c. And respectively pulling a standard line parallel to the upper horizontal ribs 3 right above each upper horizontal rib 3, leaning a short steel bar 6 on the standard line and the upper horizontal ribs 3 at the installation position of each short steel bar 6, enabling the short steel bar 6 to be perpendicular to the standard line, and binding the short steel bar 6 on the upper horizontal ribs 3. During binding, the short steel bars and the horizontal steel bars are firmly fixed together by adopting the 'splayed buckles' for binding. Because the upper horizontal rib 3 and the standard line above the upper horizontal rib are positioned in the same vertical plane, when the short steel bar 6 is attached to the standard line and the upper horizontal rib 3 at the same time, the short steel bar 6 is also positioned in the vertical plane, and at the moment, the short steel bar 6 is only required to be ensured to be vertical to the standard line at the same time, so that the short steel bar 6 can be ensured to be vertical to the horizontal ground.
d. The short reinforcing steel bars 6 after installation are checked and accepted, and the short reinforcing steel bars 6 are guaranteed to be correct in position and firmly connected with the upper horizontal ribs 3.
e. And pouring concrete on the bottom plate 1 to submerge the lower part of the short steel bar 6. If the position of the short steel bar 6 is changed in the pouring process, the short steel bar needs to be immediately corrected, and the situation that the short steel bar 6 is not perpendicular to the horizontal plane after concrete is solidified is avoided.
f. After the concrete is solidified, the upright rods 7 are inserted into the short steel bars 6 exposed out of the bottom plate 1, and a scaffold supporting system is erected. The vertical rods 7 of the common scaffold are all steel pipes with the diameter of 48mm, and after the vertical rods 7 are inserted into the short steel bars 6, the floor sweeping rods, the horizontal rods, the cross braces, the jackscrews and other members are arranged, so that a stable supporting system is formed.
g. After the scaffold is used, the scaffold is dismantled, the part of the short steel bars 6 exposed out of the concrete surface is cut off by a cutting machine, and the upper surface of the bottom plate 1 is trowelled by cement mortar. The strength of the cement mortar used should be the same as that of the concrete of the bottom plate 1.
Wherein, short reinforcing bar 6 exposes 250 ~ 300mm of 1 upper surface of bottom plate, when the unloading of short reinforcing bar 6, need confirm according to the thickness of the bottom plate 1 of utility tunnel, and short reinforcing bar 6 length is bottom plate 1 thickness plus 250 ~ 300mm, and short reinforcing bar 6's diameter is 20 ~ 25mm, guarantees to have sufficient contact length between short reinforcing bar 6 and the pole setting 7 to guarantee that short reinforcing bar 6's intensity can bear great power.
The lower floor's reinforcing bar of bottom plate 1 includes and personally submits the lower distribution muscle 4 of certain angle and arranges and be on a parallel with the lower horizontal muscle 5 of horizontal plane along lower distribution muscle 4, and lower horizontal muscle 5 and lower distribution muscle 4 mutually perpendicular, and every lower horizontal muscle 5 is located same vertical plane with the last horizontal muscle 3 that corresponds. The short reinforcing bars 6 can only be bound on the upper horizontal bars 3, but if the corresponding relation between the lower horizontal bars 5 and the upper horizontal bars 3 can be ensured, the short reinforcing bars 6 should be bound on the upper horizontal bars 3 and the lower horizontal bars 5 at the same time so as to ensure the firmness of the short reinforcing bars 6.
In step c, when the short steel bars 6 are bound, the right-angle guiding rule is used to lean against the standard line and the short steel bars 6, one right-angle side of the right-angle guiding rule is leaned against the standard line, and the short steel bars 6 are adjusted to lean against the other side of the right-angle guiding rule together so as to ensure that the short steel bars 6 are perpendicular to the standard line. In order to ensure that all positions of the standard line are horizontal and eliminate downwarping of the standard line, the standard line can adopt a steel wire.
According to the invention, the short steel bars 6 vertical to the horizontal plane are bound on the steel bars of the bottom plate 1, the upright rods 7 of the full scaffold are inserted on the short steel bars 6, and the scaffold support system is erected, so that the upright rods 7 of the scaffold are vertical to the horizontal plane, the weight of the whole scaffold vertically acts on the bottom plate 1 of the comprehensive pipe gallery along the direction of the upright rods 7 of the scaffold, the upright rods 7 of the scaffold can bear enough force, meanwhile, the lower parts of the short steel bars 6 are fixed on the bottom plate 1 of the comprehensive pipe gallery, when the force is large, the short steel bars 6 can still bear the force from the upright rods 7 of the scaffold, the stability of the scaffold support system is ensured, and the instability of the scaffold support system caused by the slope of the bottom.
The construction method is combined with the construction of the bottom plate 1 of the comprehensive pipe gallery, the vertical short steel bars 6 are bound on the steel bars of the bottom plate 1 when the steel bars of the bottom plate 1 are bound, after the bottom plate 1 is poured, the upper parts of the short steel bars 6 are exposed out of the upper surface of the bottom plate 1 and used for installing a scaffold support system, until the scaffold support system is removed, the exposed parts of the short steel bars 6 are cut off, and the upper surface of the bottom plate 1 of the comprehensive pipe gallery is leveled, so that the appearance of the bottom plate 1 of the comprehensive pipe gallery is the same as that of a conventional comprehensive pipe gallery.
The full-hall scaffold support system built by the construction method is good in stability, safe and reliable, can bear large force, and is suitable for building full-hall scaffold systems of comprehensive pipe galleries and the like with certain gradients.
Claims (6)
1. The construction method of the full-hall scaffold supporting system of the comprehensive pipe gallery with the slope is characterized by comprising the following steps of:
a. binding upper and lower layers of reinforcing steel bars of a bottom plate of the comprehensive pipe gallery, wherein the upper layer of reinforcing steel bars comprise upper distribution ribs which form a certain angle with the horizontal plane and upper horizontal ribs which are arranged along the upper distribution ribs and are parallel to the horizontal plane, and the upper horizontal ribs are perpendicular to the upper distribution ribs;
b. determining the installation position of the short steel bar, and determining the position of the upright post of the full-hall scaffold along the straight line where the upper horizontal steel bar is located, wherein the position of the upright post of the full-hall scaffold is the installation position of the short steel bar;
c. respectively pulling a standard line parallel to the upper horizontal bars above each upper horizontal bar, leaning a short steel bar on the standard line and the upper horizontal bar at the installation position of each short steel bar, enabling the short steel bar to be perpendicular to the standard line and binding the short steel bar on the upper horizontal bar;
d. the short steel bars after being installed are checked and accepted, so that the short steel bars are ensured to be positioned correctly and connected with the upper horizontal steel bars firmly;
e. pouring the bottom plate concrete to enable the concrete to submerge the lower part of the short steel bar;
f. after the concrete is solidified, inserting the upright rods on the short steel bars exposed out of the bottom plate, and erecting a scaffold supporting system;
g. and after the scaffold is used, the scaffold is dismantled, the part of the short steel bar exposed out of the concrete surface is cut off by using a cutting machine, and the upper surface of the bottom plate is trowelled by using cement mortar.
2. The method for constructing the full hall scaffold support system of the comprehensive pipe gallery with the slope according to claim 1, wherein the short steel bars are exposed to 250 ~ 300mm of the upper surface of the bottom plate.
3. The construction method of the full-hall scaffold support system with the gradient comprehensive pipe gallery according to claim 1, wherein the lower-layer steel bars comprise lower distribution bars and lower horizontal bars, the lower distribution bars form a certain angle with the horizontal plane, the lower horizontal bars are arranged along the lower distribution bars and are parallel to the horizontal plane, the lower horizontal bars are perpendicular to the lower distribution bars, and each lower horizontal bar and the corresponding upper horizontal bar are located on the same vertical plane.
4. The construction method of the full-hall scaffold support system with the gradient comprehensive pipe gallery according to claim 3, wherein the short steel bars are bound to the upper horizontal bar and the lower horizontal bar at the same time.
5. The construction method of the full hall scaffold support system with the slope comprehensive pipe gallery according to claim 1, wherein in the step c, when short steel bars are bound, a right-angle guiding rule is used to lean against the standard line and the short steel bars so as to ensure that the short steel bars are perpendicular to the standard line.
6. The construction method of the full hall scaffold support system with the gradient comprehensive pipe gallery according to claim 1, wherein the standard line is a steel wire.
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CN201910929335.4A CN110593309B (en) | 2019-09-29 | 2019-09-29 | Construction method of full-hall scaffold supporting system with slope comprehensive pipe gallery |
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CN110593309B CN110593309B (en) | 2021-06-04 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115506571A (en) * | 2022-08-25 | 2022-12-23 | 中国一冶集团有限公司 | Scaffold foundation fixing system for loess slope and construction method |
CN115787727A (en) * | 2022-12-29 | 2023-03-14 | 中建八局第二建设有限公司 | Integrated pouring column base for power pipe gallery and construction method of integrated pouring column base |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010133153A (en) * | 2008-12-04 | 2010-06-17 | Ohbayashi Corp | Underground structure, and method of constructing the same |
CN105908959A (en) * | 2016-04-27 | 2016-08-31 | 中建局集团建设发展有限公司 | Scaffold base structure at structural ramp, scaffold and construction method thereof |
CN107288154A (en) * | 2017-07-26 | 2017-10-24 | 中交公局海威工程建设有限公司 | A kind of support suitable for pipe gallery slope section sets up structure |
-
2019
- 2019-09-29 CN CN201910929335.4A patent/CN110593309B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010133153A (en) * | 2008-12-04 | 2010-06-17 | Ohbayashi Corp | Underground structure, and method of constructing the same |
CN105908959A (en) * | 2016-04-27 | 2016-08-31 | 中建局集团建设发展有限公司 | Scaffold base structure at structural ramp, scaffold and construction method thereof |
CN107288154A (en) * | 2017-07-26 | 2017-10-24 | 中交公局海威工程建设有限公司 | A kind of support suitable for pipe gallery slope section sets up structure |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115506571A (en) * | 2022-08-25 | 2022-12-23 | 中国一冶集团有限公司 | Scaffold foundation fixing system for loess slope and construction method |
CN115506571B (en) * | 2022-08-25 | 2024-05-17 | 中国一冶集团有限公司 | Scaffold foundation fixing system for loess slope and construction method |
CN115787727A (en) * | 2022-12-29 | 2023-03-14 | 中建八局第二建设有限公司 | Integrated pouring column base for power pipe gallery and construction method of integrated pouring column base |
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