CN114541475B - Construction method of irregular curvature underground outer wall - Google Patents
Construction method of irregular curvature underground outer wall Download PDFInfo
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- CN114541475B CN114541475B CN202210001390.9A CN202210001390A CN114541475B CN 114541475 B CN114541475 B CN 114541475B CN 202210001390 A CN202210001390 A CN 202210001390A CN 114541475 B CN114541475 B CN 114541475B
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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
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a construction method of an irregular curvature underground outer wall. On the other hand, the support posts support and adjust the verticality of the truss reinforcement cage on the inner side of the underground outer wall, support and adjust the outer template of the underground outer wall on the outer side of the underground outer wall through the support posts, and the support posts are fully utilized as the support, so that the forming quality of the underground outer wall is improved, the measure cost is saved, and the construction is convenient and quick. The invention solves the problem that the pouring quality of the underground outer wall is easily affected by internal force generated after the forced installation of the horizontal steel bars prepared by on-site bending of the existing underground outer wall with irregular curvature.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of an irregular curvature underground outer wall.
Background
In recent years, with the dramatic development of the economy in China and the continuous improvement of the living standard of people, the demands of people on mental life are also continuously improved, so that a large number of cultural and tourist buildings such as exhibition halls, urban gardens and the like are built in each provincial and urban cities. Unlike residential and office buildings, such exhibitions and urban gardens are typically uniquely shaped. To meet the needs of its architectural modeling, an underground structure may employ an irregularly curved underground exterior wall (i.e., a basement exterior wall as shown in fig. 6).
At present, the construction sequence of the irregular curvature underground outer wall is as follows: binding vertical reinforcing steel bars (namely longitudinal reinforcing steel bars) of the outer wall, binding transverse reinforcing steel bars (namely horizontal reinforcing steel bars) of the outer wall, supporting templates and pouring concrete. Because the curvature of the underground outer wall is irregular, the horizontal steel bars need to be bent and formed according to the curvature change condition of the outer wall, if cold bending processing is carried out on the horizontal steel bars in a factory, the processing and transportation cost is too high, so that the control cost is considered, and the cold bending processing is carried out on the horizontal steel bars of the outer wall on site. However, the accuracy of the field machining is not controllable, so that the horizontal steel bars are inevitably forced to be in place in the binding process of the horizontal steel bars. The forced positioning causes the horizontal steel bars to generate internal force, and the internal force causes the construction quality of the underground outer wall with irregular curvature to be poor, specifically for the following reasons:
(1) when the internal force is smaller, the vertical steel bars can provide enough constraint counter force, and at the moment, the main problem is that the perpendicularity deviation of the underground outer wall steel bar cage is caused, namely, the thickness of a protective layer of the longitudinal steel bars on one side of the outer wall is thicker, and the thickness of the opposite side is thinner, so that the durability of the structure is influenced;
(2) when the internal force is large, the vertical steel bars cannot provide enough constraint counter force, and at the moment, the vertical steel bars are clung to the template, and a certain constraint counter force is provided by the template, so that the thickness of the protection layer of the longitudinal steel bars on one side of the outer wall is too thick, and the exposed steel bars on the other side of the outer wall are large in area;
(3) when the internal force is excessive, the vertical steel bars and the templates cannot provide enough constraint counter force, and at the moment, the templates cannot be supported;
(4) meanwhile, the internal force can also cause the probability of common quality problems, such as slurry leakage, structural size and even position deviation caused by loose joint of templates.
Disclosure of Invention
In order to overcome the defects existing in the prior art, the construction method of the underground outer wall with the irregular curvature is provided, so that the problem that the pouring quality of the underground outer wall is affected by internal force easily generated after the horizontal reinforcing steel bars prepared by field bending of the existing underground outer wall with the irregular curvature are forcedly installed is solved.
In order to achieve the above object, there is provided a construction method of an irregularly curved underground exterior wall, comprising:
a plurality of vertical steel bars are arranged on the inner side and the outer side of the underground outer wall, are arranged along the circumferential direction of the underground outer wall, and are respectively provided with horizontal steel bars;
connecting a plurality of tie bars between two vertical steel bars and between two horizontal steel bars which are opposite to each other at the inner side and the outer side of the underground outer wall respectively to form a truss steel bar cage;
an inner template is supported on the inner side of the truss reinforcement cage, and an outer template is supported on the outer side of the truss reinforcement cage;
pouring a row of support piles in soil body at the outer side of the outer template, and installing a first support rod between the support piles and the outer template to adjust the verticality of the outer template;
and pouring supporting piles in soil body at the inner side of the inner formwork, and installing second supporting rods between the supporting piles and truss steel bars to adjust the perpendicularity of the truss steel bar cage.
Furthermore, anchoring parts are respectively arranged on the ground on the inner side and the outer side of the truss reinforcement cage, and an adjusting rope is connected between the anchoring parts and the truss reinforcement cage so as to adjust the verticality of the truss reinforcement cage.
Further, the adjusting rope is connected to the top of the truss reinforcement cage.
Further, after the inner template and the outer template are supported, the inner template and the outer template are tied together through split bolts.
Further, before the split bolts are installed, back ribs are installed on the outer sides of the inner die plate and the outer die plate respectively, and the back ribs are arranged at positions with larger curvatures of the inner die plate and the outer die plate in an encrypted mode.
Further, the support pile is a multi-shaft stirring pile.
Further, the support piles are stiff steel columns.
Further, the inner template is provided with a perforation, and the second supporting rod is arranged in the perforation in a penetrating mode.
The construction method for the irregular curvature underground outer wall has the beneficial effects that the vertical steel bars and the horizontal steel bars which are relatively independent of the underground outer wall are connected through the tie bars to form the integral truss steel bar cage, and the internal force of the horizontal steel bars is converted into the internal force of the steel bar cage. On the other hand, according to the construction method of the irregular curvature underground outer wall, the support columns are used for supporting and adjusting the verticality of the truss reinforcement cage on the inner side of the underground outer wall, the support piles are used for supporting and adjusting the outer template of the underground outer wall on the outer side of the underground outer wall, the support piles and the support piles are fully utilized as the support, the forming quality of the underground outer wall is further improved, the measure cost is saved, and the construction is convenient and quick.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
fig. 1 to 5 are schematic views illustrating steps of a method for constructing an irregularly curved underground exterior wall according to an embodiment of the present invention.
Fig. 6 is a schematic view of the structure of an irregularly curved underground exterior wall according to an embodiment of the present invention.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 6, the present invention provides a construction method of an irregularly curved underground exterior wall, comprising the steps of:
s1: a plurality of vertical bars 11 are installed at both inner and outer sides of the underground external wall 10, a plurality of the vertical bars 11 are disposed along a circumferential direction of the underground external wall 10, and horizontal bars 12 are installed at the vertical bars 11 at both inner and outer sides of the underground external wall 10, respectively.
The horizontal steel bar is irregularly bent and can be bent and prepared on the construction site. The horizontal steel bars are arranged on a plurality of vertical steel bars which are arranged at intervals along the length direction of the underground outer wall.
S2: a plurality of tie bars 13 are respectively connected between two vertical bars 11 and two horizontal bars 12 which are opposite to each other at the inner side and the outer side of the underground outer wall 10 to form a truss reinforcement cage 1.
And welding tie bars at intervals of one end along the horizontal and vertical directions of the truss reinforcement cage of the underground outer wall, connecting the vertical reinforcement and the horizontal reinforcement which are relatively independent from each other in the inner side and the outer side of the underground outer wall into a whole, namely, the truss reinforcement cage, and converting the internal force of the horizontal reinforcement into the internal force of the truss reinforcement cage.
At the position with larger curvature of the truss reinforcement cage, the truss reinforcement cage with larger curvature change as shown in fig. 1 has larger internal force of the horizontal reinforcement of the underground outer wall, so that the tie reinforcement is required to be encrypted at the position.
S3: an inner template 2 is supported on the inner side of the truss reinforcement cage 1, and an outer template 3 is supported on the outer side of the truss reinforcement cage 1.
After the inner template 2 and the outer template 3 are supported, the inner template 2 and the outer template 3 are tied together through split bolts.
Because the underground outer wall is irregularly arc-shaped, the combination of the split bolts and the steel pipes cannot be used for reinforcing the template, and therefore the split bolts and the steel pipes are used for reinforcing the template.
Before installing the split bolts, the back ribs 5 are installed on the outer sides of the inner template 2 and the outer template 3 respectively, and the back ribs 5 are arranged in an encrypted manner at the positions where the curvature change of the inner template 2 and the outer template 3 is large, as shown in fig. 2.
At the position with larger curvature change of the inner and outer templates, the inner force of the horizontal steel bars of the underground outer wall is larger, so that the template wood back edges are required to be encrypted at the position, and the overall rigidity of the template is improved.
S4: a row of support piles 6 are cast in soil body outside the outer formwork 3, and a first support rod 61 is installed between the support piles 6 and the outer formwork 3 to adjust the verticality of the outer formwork 3.
The support piles 6 are multi-shaft stirring piles.
Because the inner and outer templates are higher (8 m), and meanwhile, the templates of the underground outer wall cannot be completely prevented from bearing the internal force caused by bending of the horizontal reinforcing steel bars, the templates are required to be supported, and the supporting effect is as follows: (1) when the template does not bear the internal force caused by bending of the reinforcing steel bars, the perpendicularity of the template can be adjusted through the support; (2) when the form is subjected to an internal force caused by bending of the horizontal bars, the form may transmit the internal force to the support (row of support piles).
In combination with engineering practice, the support pile adopts the SMW construction method pile and the steel pipe (namely the first support rod) of the scaffold as the support of the template, namely one end of the scaffold steel pipe is welded with the section steel of the SMW construction method pile, and the other end of the scaffold steel pipe is supported by the scaffold steel pipe to tightly prop against the outer template. The length of the scaffold steel tube support can be adjusted, so that the scaffold steel tube support can be used as an outer template support, and meanwhile, the perpendicularity of the template can be adjusted, and the pouring molding quality of the underground outer wall is ensured.
S5: and pouring the supporting piles 7 in soil body on the inner side of the inner formwork 2, and installing the second supporting rods 71 between the supporting piles 7 and the truss steel bars to adjust the verticality of the truss steel bar cage 1.
The support piles 7 are stiff steel columns. The inner die plate 2 is provided with a perforation, and the second supporting rod 71 is arranged in the perforation in a penetrating way.
Under normal conditions, one end of the second supporting rod is welded with a connecting plate extending out of the stiff steel column, the other end of the second supporting rod is welded with an outer wall reinforcement cage of the basement through a hook, and the perpendicularity of the truss reinforcement cage of the outer wall of the basement is adjusted through the second supporting rod.
As a preferred embodiment, anchors 81 are installed on the ground on the inner and outer sides of the truss reinforcement cage 1, respectively, and an adjusting cable 8 is connected between the anchors 81 and the truss reinforcement cage 1 to adjust the verticality of the truss reinforcement cage 1. The adjusting rope 8 is connected to the top of the truss reinforcement cage 1.
In this embodiment, the adjusting cable is erected at intervals of one end. One end of the adjusting rope is connected with an anchoring piece fixed on the ground; the other end of the adjusting rope penetrates through the perforation reserved on the outer membrane plate and is connected with the top of the truss reinforcement cage. Because the adjusting rope is a flexible rope, a pair of adjusting ropes are arranged at two sides of the truss reinforcement cage at the same time and are used for adjusting the verticality of the truss reinforcement cage.
According to the construction method of the irregular curvature underground outer wall, the vertical steel bars and the horizontal steel bars of the underground outer wall which are relatively independent are connected through the tie bars to form the integral truss steel bar cage, and the internal force of the horizontal steel bars is converted into the internal force of the steel bar cage. On the other hand, according to the construction method of the irregular curvature underground outer wall, the support columns are used for supporting and adjusting the verticality of the truss reinforcement cage on the inner side of the underground outer wall, the support piles are used for supporting and adjusting the outer template of the underground outer wall on the outer side of the underground outer wall, the support piles and the support piles are fully utilized as the support, the forming quality of the underground outer wall is further improved, the measure cost is saved, and the construction is convenient and quick.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (8)
1. The construction method of the irregular curvature underground outer wall is characterized by comprising the following steps of:
a plurality of vertical steel bars are arranged on the inner side and the outer side of the underground outer wall, are arranged along the circumferential direction of the underground outer wall, and are respectively provided with horizontal steel bars;
connecting a plurality of tie bars between two vertical steel bars and between two horizontal steel bars which are opposite to each other at the inner side and the outer side of the underground outer wall respectively to form a truss steel bar cage;
an inner template is supported on the inner side of the truss reinforcement cage, and an outer template is supported on the outer side of the truss reinforcement cage;
pouring a row of support piles in soil body at the outer side of the outer template, and installing a first support rod between the support piles and the outer template to adjust the verticality of the outer template;
and pouring supporting piles in soil body at the inner side of the inner formwork, and installing second supporting rods between the supporting piles and truss steel bars to adjust the perpendicularity of the truss steel bar cage.
2. The method according to claim 1, wherein anchors are installed on the ground on both sides of the truss reinforcement cage, and an adjusting cable is connected between the anchors and the truss reinforcement cage to adjust the verticality of the truss reinforcement cage.
3. The method of claim 2, wherein the adjusting cable is connected to the top of the truss reinforcement cage.
4. The method of claim 1, wherein after the inner and outer forms are erected, they are tied together by means of split bolts.
5. The method according to claim 4, wherein before the split bolts are installed, back ribs are installed on the outer sides of the inner and outer formworks, respectively, and the back ribs are installed in an encrypted manner at positions where the curvatures of the inner and outer formworks are large.
6. The method of claim 1, wherein the support piles are multi-shaft stirring piles.
7. The method of claim 1, wherein the support piles are stiff steel columns.
8. The method for constructing an irregularly curved underground exterior wall according to claim 1, wherein the inner form is provided with perforations, and the second support bar is inserted into the perforations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210001390.9A CN114541475B (en) | 2022-01-04 | 2022-01-04 | Construction method of irregular curvature underground outer wall |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210001390.9A CN114541475B (en) | 2022-01-04 | 2022-01-04 | Construction method of irregular curvature underground outer wall |
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| Publication Number | Publication Date |
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| CN114541475A CN114541475A (en) | 2022-05-27 |
| CN114541475B true CN114541475B (en) | 2023-07-21 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2607926A1 (en) * | 2006-12-04 | 2008-06-04 | Metal Forms Corporation | Radius forming system |
| CN205955184U (en) * | 2016-08-22 | 2017-02-15 | 中国江苏国际经济技术合作集团有限公司 | Hyperboloid reinforced concrete breast board single -side supporting formwork structure of being under construction |
| CN108442689A (en) * | 2018-03-23 | 2018-08-24 | 中国十七冶集团有限公司 | One kind exempting from plaster curved surface concrete walls shaped steel back cord gang form and construction method |
| CN109208790A (en) * | 2018-09-29 | 2019-01-15 | 温州建设集团有限公司 | Circular arc shear wall single side formwork construction method |
| CN110284702A (en) * | 2019-07-05 | 2019-09-27 | 浙江乔兴建设集团有限公司 | A kind of constructing device and construction method of hyperboloid arc mixed mud wall |
| CN113322815A (en) * | 2021-05-11 | 2021-08-31 | 湖北三峡职业技术学院 | Special-shaped box girder template supporting structure and forming method |
-
2022
- 2022-01-04 CN CN202210001390.9A patent/CN114541475B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2607926A1 (en) * | 2006-12-04 | 2008-06-04 | Metal Forms Corporation | Radius forming system |
| CN205955184U (en) * | 2016-08-22 | 2017-02-15 | 中国江苏国际经济技术合作集团有限公司 | Hyperboloid reinforced concrete breast board single -side supporting formwork structure of being under construction |
| CN108442689A (en) * | 2018-03-23 | 2018-08-24 | 中国十七冶集团有限公司 | One kind exempting from plaster curved surface concrete walls shaped steel back cord gang form and construction method |
| CN109208790A (en) * | 2018-09-29 | 2019-01-15 | 温州建设集团有限公司 | Circular arc shear wall single side formwork construction method |
| CN110284702A (en) * | 2019-07-05 | 2019-09-27 | 浙江乔兴建设集团有限公司 | A kind of constructing device and construction method of hyperboloid arc mixed mud wall |
| CN113322815A (en) * | 2021-05-11 | 2021-08-31 | 湖北三峡职业技术学院 | Special-shaped box girder template supporting structure and forming method |
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| CN114541475A (en) | 2022-05-27 |
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