CN102900103A - Construction gap of underground waterproof concrete structure and wall template installation method thereof - Google Patents
Construction gap of underground waterproof concrete structure and wall template installation method thereof Download PDFInfo
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- CN102900103A CN102900103A CN2012102991885A CN201210299188A CN102900103A CN 102900103 A CN102900103 A CN 102900103A CN 2012102991885 A CN2012102991885 A CN 2012102991885A CN 201210299188 A CN201210299188 A CN 201210299188A CN 102900103 A CN102900103 A CN 102900103A
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Abstract
The invention discloses a construction gap of an underground waterproof concrete structure and a wall template installation method thereof. Aiming at the technical problem that a wall template of a ladder-shaped construction gap is difficult to install and easy to deform, on the basis of a novel ladder-shaped construction gap, short wood beams are used for controlling forming of the construction gap, the template is fixed by a split boltwith reserved threads secondarily, numerous specific construction measures of a reinforced steel bar blocking foot fixed on a base plate, a transom arranged on the split bolt and the like reduce wall surface construction gaps, improve impression quality of concrete surface, improve anti-permeability capacity of the waterproof concrete structure, reduce leakage of buildings, guarantee that the structure is more stable, controlsectional dimension of a wall body, prevent the wall body from deforming, guarantee construction quality, is simple and easy inconstruction operation, improve working efficiency, and reduce construction cost.
Description
Technical field
The present invention relates to the waterproof concrete structure job practices, specifically, relate to the constuction joint in the underground waterproof concrete structure, and the job practices of constuction joint place stay in place formwork.
Background technology
For guaranteeing the concrete structure presentation quality, usually adopt novel constuction joint in the underground waterproof concrete structure construction, constuction joint is stepped in body of wall inside, near in body of wall back side 1/4 scope horizontal construction joint is set, near in body of wall upstream face 3/4 scope horizontal construction joint is being set, and exceeding front road constuction joint 300mm～500mm, the centre arranges vertical constuction joint, and the steel seal plate is set in the middle of 3/4 horizontal construction joint.
Adopt above-mentioned concrete structure construction seam job practices, stepped because of constuction joint, body of wall adopts merogenesis to build, and this causes difficulty to constuction joint place side wall formwork erection, is difficult to guarantee that deformation of wall meets design and code requirement.And the excessive thickness of wall body that will cause of side wall template deformation does not meet design requirement, also can exert an influence to the waterproof of constuction joint, impervious effect, cause the serious hidden danger of quality such as seepage, body of wall unstability, will pay the expenses such as high maintenance, leak stopping for this reason, cause construction cost to increase.
Summary of the invention
What the present invention will solve is that the wall form that has stepped constuction joint now is installed comparatively difficulty, and hold yielding technical problem, a kind of constuction joint and wall form mounting method thereof of underground waterproof concrete structure are provided, the method can increase stay in place formwork and install stability, improves concrete construction quality; Increase the concrete structure impermeability, reducing construction cost, and be convenient to the Control Engineering quality.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A kind of constuction joint of underground waterproof concrete structure, this constuction joint is arranged at the above 300 ~ 500mm body of wall position of base plate and the body of wall merogenesis is built the position, comprise being arranged on meet water " protruding " font constuction joint of side of body of wall, described " protruding " font constuction joint width accounts for 3/4 of thickness of wall body; Described " protruding " font constuction joint minimum point is connected with " one " font constuction joint that is arranged on the body of wall land side, and described " one " font constuction joint accounts for 1/4 of thickness of wall body; Described " protruding " font constuction joint centre position arranges the steel seal plate, and described steel seal plate and described constuction joint lower walls body concrete be pouring construction simultaneously.
The wall form mounting method at a kind of underground waterproof concrete structure construction seam place, the method is carried out in accordance with the following steps:
(1) baseplate reinforcing bar, template construction, the body of wall upstream face that base plate is above, first constuction joint end face design elevation is following install outside wall form, and the inside thickness of wall body of body of wall back side 1/4 place installs inboard wall form;
(2) the both sides wall form adopts split bolt to fix in the step (1), and the split bolt at inboard wall form place is reserved the screw thread that can reach body of wall back side length;
(3) install projection two side templates on " protruding " font constuction joint top in the first constuction joint temporarily, the short lumps of wood is installed between the wall form of both sides in described projection two side templates and the step (2), adopt simultaneously reinforcing bar to be welded and fixed the steel seal plate;
(4) after base plate and base plate first segment walls concrete above, that the first constuction joint is following is built and finished and reach design strength and require, remove inboard wall form and the described short lumps of wood of first segment body of wall, the outside wall form of first segment body of wall is not removed first;
(5) first constuction joint end face design elevation body of wall upstream face above, that second constuction joint end face design elevation is following installs outside wall form, the body of wall back side that base plate is above, second constuction joint bottom surface design elevation is following installs inboard wall form again, reserves the fixing described inboard wall form of screw thread bottom by the split bolt in the step (2) simultaneously;
(6) on base plate along the inboard wall form inner wall position in the step (5), the reinforcing bar gear pin that anchoring is made by short muscle, described reinforcing bar gear pin is arranged according to 1～2m spacing along the length direction of described inboard wall form;
(7) the design elevation inside thickness of wall body of body of wall back side 1/4 place above, that the end face design elevation is following in second constuction joint bottom surface installs inboard wall form;
(8) the both sides wall form adopts split bolt to fix in the step (7), and the split bolt at inboard wall form place is reserved the screw thread that can reach body of wall back side length;
(9) install projection two side templates on " protruding " font constuction joint top in the second constuction joint temporarily, the short lumps of wood is installed between the wall form of both sides in described projection two side templates and the step (8), adopt simultaneously reinforcing bar to be welded and fixed the steel seal plate;
(10) in the first constuction joint " one " font constuction joint second section walls concrete above, that the second constuction joint is following build finish and reach design strength and require after, remove the following both sides wall form of second constuction joint end face design elevation, wherein, second constuction joint below first row split bolt reinforcing bar does not excise processing;
(10) in the first constuction joint " one " font constuction joint second section walls concrete above, that the second constuction joint is following build finish and reach design strength and require after, remove the following both sides wall form of second constuction joint end face design elevation, wherein, second constuction joint below first row split bolt reinforcing bar does not excise processing;
(11) the above fixedly both sides wall form of the second constuction joint in step (10) below first row split bolt reinforcing bar, and the fixing bottom of both sides wall form of the split bolt that passes through perforation second constuction joint;
(12) when body of wall includes only the twice constuction joint, the both sides wall form in the step (11) props up and is set to body of wall end face design elevation position, and constuction joint place wall form is installed and finished;
When body of wall comprises greater than the twice constuction joint, outside wall form props up and is set to next constuction joint end face design elevation position, road, inboard wall form props up and is set to next design elevation position, constuction joint bottom surface, road, repeating step (7) is to the operation of step (12), until the following walls concrete of last one constuction joint build finish and reach design strength and require after, remove the following both sides wall form of last one constuction joint end face design elevation, wherein, first row split bolt reinforcing bar does not excise processing below last one constuction joint; The above fixedly final section both sides wall form of one constuction joint below first row split bolt reinforcing bar in the end, and the fixing bottom of both sides wall form of the split bolt by connecting last one constuction joint, the both sides wall form props up and is set to body of wall end face design elevation position, and constuction joint place wall form is installed and finished.
The wall form inner wall position is provided with the crosspiece that is fixed on the split bolt.
The invention has the beneficial effects as follows:
(1) the invention provides a kind of stepped constuction joint that increases step plate, increased the permeation pathway of waterproof concrete structure, the impermeability of Effective Raise waterproof concrete structure reduces the generation of structure Seepage;
(2) " one " font constuction joint in the constuction joint of the above 300～500mm body of wall position of base plate of the present invention is retained on the base plate, can reduce the wall construction seam, improves the concrete surface impression quality;
(3) constuction joint of the present invention is embedded, has increased the draw-in groove in the constuction joint, thereby has strengthened the contact area at body of wall merogenesis place, in conjunction with wall form mounting method of the present invention, can guarantee that structure is more firm, thereby guarantees construction quality;
(4) constuction joint of the present invention place wall form mounting method, to reserve the split bolt secondary fixed form of screw thread, improve the utilization rate of split bolt, strengthen the stability of formwork erection, reduce the consumption of scaffold, not only make constructing operation simple and easy to do, also increase work efficiency, reduced construction cost;
(5) constuction joint of the present invention place wall form mounting method, utilization is fixed on reinforcing bar gear pin on the base plate and the measures such as crosspiece on the split bolt, better the sectional dimension of control structure body of wall further prevents deformation of wall, thereby guarantees construction quality.
Description of drawings
Fig. 1 is that the wall form that base plate is above, the first constuction joint is following installs schematic diagram;
Fig. 2 is that the wall form that the first constuction joint is above, the second constuction joint is following installs schematic diagram;
Fig. 3 is that the above wall form of second constuction joint installs schematic diagram.In the drawings: 1, constuction joint; 1-1, " protruding " font constuction joint; 1-2, " one " font constuction joint; 2, the steel seal plate; 3, split bolt; 3-1, screw thread; 3-2, crosspiece; 3-3, the steel sealing piece; 4, reinforcing bar gear pin; 5, short flitch; 6, wall form.
The specific embodiment
For further understanding summary of the invention of the present invention, Characteristic, routine open caisson construction seam place side wall template is installed as example hereby, and cooperates accompanying drawing to be described in detail as follows:
(1) open caisson foundation is reinforced concrete structure, and embedded depth of foundation 13.95m, key dimension are 13.65 * 12.65m, and foundation structure adopts C45 level water proof anti-seepage concrete.By designing requirement, open caisson adopts minute three joint constructions, and the above 300 ~ 500mm body of wall position of base plate and body of wall merogenesis are built the position constuction joint 1 is set.Constuction joint 1 is stepped, is comprised of " protruding " font constuction joint 1-1 and " one " font constuction joint 1-2." protruding " font constuction joint 1-1 is arranged on the body of wall side that meets water, and horizontal length 600mm accounts for 3/4 of thickness of wall body; " one " font constuction joint 1-2 is arranged on the body of wall land side and is connected with " protruding " font constuction joint 1-1 minimum point, and horizontal length 200mm accounts for 1/4 of thickness of wall body.
Wherein, the steel plate that " protruding " font constuction joint 1-1 adopts in the centre position is 400 wide, 3mm is thick is as the steel seal plate 2 of constuction joint 1, lap length 100mm, two-sided welding.
(2) as shown in Figure 1, above, the wall form 6 of first constuction joint below 1 of base plate installs:
The above 300mm of design base plate arranges first constuction joint 1.
Baseplate reinforcing bar, template construction, the body of wall upstream face that base plate is above, first constuction joint 1 end face design elevation is following installs outside wall form 6, the inside thickness of wall body of body of wall back side 1/4 place installs inboard wall form 6, and namely the spacing between the both sides wall form 6 is 3/4 of thickness of wall body.This moment, wall form 6 height in both sides were same high with first constuction joint 6 end face design elevations.
Above-mentioned both sides wall form 6 adopts split bolt 3 to carry out external stability, and the split bolt 3 at inboard wall form 6 places is reserved the screw thread 3-1 of sufficient length, and this screw thread 3-1 needs to reach the position of body of wall back side, so that secondary uses.On split bolt 3, wall form 6 inner wall positions arrange crosspiece 3-2, with control wall section size, crosspiece 3-2 adopts ф 12 reinforcement fabrications.Split bolt 3 middle parts are equipped with steel sealing piece 3-3.
Centre position between the above-mentioned both sides wall form 6 installs projection two side templates on " protruding " font constuction joint 1-1 top in the first constuction joint 1 temporarily by reinforcing bar, these projection two side templates respectively and short flitch 5 is set between the above-mentioned both sides wall form 6 remove the temporary supporting reinforcing bar after short flitch 5 is fixing.Short flitch 5 is pressed the setting of 1.5m spacing along the length direction of wall form 6, is used for the sectional dimension of control first constuction joint 1 " protruding " font constuction joint 1-1 top projection.
Adopt reinforcing bar to be welded and fixed steel seal plate 2.
After wall form 6 is fixedly finished, build that base plate and base plate are above, the first segment walls concrete of first constuction joint below 1.Adopt the automotive pump pumping of concrete, build the moistening wall form 6 of front watering, concrete adopts staged and layered to build, and is incremental, once finishes.Every layer thickness is less than or equal to 500mm, and must not surpass 2 hours the off time of concrete joint, in order to avoid " cold seam " occur.The vibrating head dot spacing that shakes is controlled between 200～300mm, and fast inserting pulled out slowly, tiltedly advanced tiltedly, and avoids vibrating reinforcing bar and steel seal plate 2.The assurance concrete vibrating is closely knit.
Simultaneously the steel seal plate 2 on " protruding " font constuction joint 1-1 in the first constuction joint 1 is cast in the first segment body of wall, improves the side wall impermeability.
(3) as shown in Figure 2, first constuction joint more than 1, the wall form 6 of second constuction joint below 1 install:
After the first segment walls concrete is built and finished and reach design strength and require, remove inboard wall form 6 and the described short lumps of wood of first segment body of wall, the outside wall form 6 first not form removals of first segment body of wall.The split bolt 3 that runs through first constuction joint 1 does not excise processing.
After constuction joint 1 dabbing, clear water are cleaned, the body of wall upstream face that first constuction joint 1 end face design elevation is above, second constuction joint 1 end face design elevation is following installs outside wall form 6, the body of wall back side that base plate is above, second constuction joint 1 bottom surface design elevation is following installs inboard wall form 6 again, and namely both sides wall form 6 is according to the wall thickness size Control.
By the screw thread 3-1 of the sufficient length of original split bolt 3 reservations in the first segment body of wall, fixing inboard wall form 6 bottoms.
On base plate, along the inner wall position of above-mentioned inboard wall form 6, according to the 2m spacing, adopt hand air drill borehole anchorage ф 12 short muscle, as reinforcing bar gear pin 4 at length direction.
More than second constuction joint 1 bottom surface design elevation, below the end face design elevation, 1/4 place installs inboard wall form 6 in the inside thickness of wall body of body of wall back side, divides step to install with former side wall; The height of both sides wall form 6 and second constuction joint 1 end face design elevation are with high at this moment.
Above-mentioned both sides wall form 6 adopts split bolt 3 to carry out external stability, and the split bolt 3 at inboard wall form 6 places is reserved the screw thread 3-1 of sufficient length, and this screw thread 3-1 needs to reach the position of body of wall back side, so that secondary uses.On split bolt 3, wall form 6 inner wall positions arrange crosspiece 3-2, with control wall section size, crosspiece 3-2 adopts ф 12 reinforcement fabrications.Split bolt 3 middle parts are equipped with steel sealing piece 3-3.
The projection formwork erection on " protruding " font constuction joint 1-1 top is identical with the processing method of first constuction joint 1 in the second constuction joint 1, and adopts reinforcing bar to be welded and fixed steel seal plate 2.
After second section wall form 6 is fixedly finished, build in the first constuction joint 1 according to the requirement in (two) that " one " font constuction joint 1-2 is above, the second section walls concrete of second constuction joint below 1.
(3) as shown in Figure 3, the wall form 6 of second constuction joint more than 1 installs:
The second section walls concrete is removed the following both sides wall form 6 of second constuction joint 1 end face design elevation after building and finishing and reach design strength and require.Wherein, the reinforcing bar of the first row split bolt 3 of second constuction joint 1 below does not excise processing.
Constuction joint 1 dabbing, clear water are fixed on both sides wall form 6 on above-mentioned second constuction joint 1 below first row split bolt 3 reinforcing bars after cleaning, and the fixing bottom of both sides wall form 6 of the split bolt 3 by connecting second constuction joint 1; 6 of wall forms are set to body of wall end face design elevation position, and the top of both sides wall form 6 adopts the split bolt 3 that is provided with crosspiece 3-2 fixing.
The 3rd joint both sides wall form 6 is built second constuction joint 1 to the second section walls concrete of body of wall end face according to the requirement in (two) after fixedly finishing.
So far, open caisson construction stitches that 1 place's side wall template 6 is installed and the wall pouring construction is finished.
Certainly, construction invention of the present invention not only is applicable to open caisson construction, and in the construction of other underground waterproof concrete structure, body of wall may adopt minute above construction of three joints, and this moment, body of wall comprised the constuction joint 2 greater than twice.In this case, wall form 6 fitting operations at above-mentioned side wall and side wall constuction joint 1 place of circulating get final product, until the walls concrete of last one constuction joint below 1 build finish and reach design strength and require after, remove the following both sides wall form 6 of last one constuction joint, 1 end face design elevation, last according to wall form 6 erection methods of above-mentioned second constuction joint 1 to the body of wall end face, construct last one constuction joint 1 to the wall form 6 of body of wall end face, and constuction joint place wall form is installed and is finished.
Although the above is described the preferred embodiments of the present invention by reference to the accompanying drawings; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, these all belong within protection scope of the present invention.
Claims (3)
1. the constuction joint of a underground waterproof concrete structure, this constuction joint is arranged at the above 300 ~ 500mm body of wall position of base plate and the body of wall merogenesis is built the position, it is characterized in that, comprise being arranged on meet water " protruding " font constuction joint of side of body of wall, described " protruding " font constuction joint width accounts for 3/4 of thickness of wall body; Described " protruding " font constuction joint minimum point is connected with " one " font constuction joint that is arranged on the body of wall land side, and described " one " font constuction joint accounts for 1/4 of thickness of wall body; Described " protruding " font constuction joint centre position arranges the steel seal plate, and described steel seal plate and described constuction joint lower walls body concrete be pouring construction simultaneously.
2. the wall form mounting method at underground waterproof concrete structure construction seam place as claimed in claim 1 is characterized in that, the method is carried out in accordance with the following steps:
(1) baseplate reinforcing bar, template construction, the body of wall upstream face that base plate is above, first constuction joint end face design elevation is following install outside wall form, and the inside thickness of wall body of body of wall back side 1/4 place installs inboard wall form;
(2) the both sides wall form adopts split bolt to fix in the step (1), and the split bolt at inboard wall form place is reserved the screw thread that can reach body of wall back side length;
(3) install projection two side templates on " protruding " font constuction joint top in the first constuction joint temporarily, the short lumps of wood is installed between the wall form of both sides in described projection two side templates and the step (2), adopt simultaneously reinforcing bar to be welded and fixed the steel seal plate;
(4) after base plate and base plate first segment walls concrete above, that the first constuction joint is following is built and finished and reach design strength and require, remove inboard wall form and the described short lumps of wood of first segment body of wall, the outside wall form of first segment body of wall is not removed first;
(5) first constuction joint end face design elevation body of wall upstream face above, that second constuction joint end face design elevation is following installs outside wall form, the body of wall back side that base plate is above, second constuction joint bottom surface design elevation is following installs inboard wall form again, reserves the fixing described inboard wall form of screw thread bottom by the split bolt in the step (2) simultaneously;
(6) on base plate along the inboard wall form inner wall position in the step (5), the reinforcing bar gear pin that anchoring is made by short muscle, described reinforcing bar gear pin is arranged according to 1～2m spacing along the length direction of described inboard wall form;
(7) the design elevation inside thickness of wall body of body of wall back side 1/4 place above, that the end face design elevation is following in second constuction joint bottom surface installs inboard wall form;
(8) the both sides wall form adopts split bolt to fix in the step (7), and the split bolt at inboard wall form place is reserved the screw thread that can reach body of wall back side length;
(9) install projection two side templates on " protruding " font constuction joint top in the second constuction joint temporarily, the short lumps of wood is installed between the wall form of both sides in described projection two side templates and the step (8), adopt simultaneously reinforcing bar to be welded and fixed the steel seal plate;
(10) in the first constuction joint " one " font constuction joint second section walls concrete above, that the second constuction joint is following build finish and reach design strength and require after, remove the following both sides wall form of second constuction joint end face design elevation, wherein, second constuction joint below first row split bolt reinforcing bar does not excise processing;
(11) the above fixedly both sides wall form of the second constuction joint in step (10) below first row split bolt reinforcing bar, and the fixing bottom of both sides wall form of the split bolt that passes through perforation second constuction joint;
(12) when body of wall includes only the twice constuction joint, the both sides wall form in the step (11) props up and is set to body of wall end face design elevation position, and constuction joint place wall form is installed and finished;
When body of wall comprises greater than the twice constuction joint, outside wall form props up and is set to next constuction joint end face design elevation position, road, inboard wall form props up and is set to next design elevation position, constuction joint bottom surface, road, repeating step (7) is to the operation of step (12), until the following walls concrete of last one constuction joint build finish and reach design strength and require after, remove the following both sides wall form of last one constuction joint end face design elevation, wherein, first row split bolt reinforcing bar does not excise processing below last one constuction joint; The above fixedly final section both sides wall form of one constuction joint below first row split bolt reinforcing bar in the end, and the fixing bottom of both sides wall form of the split bolt by connecting last one constuction joint, the both sides wall form props up and is set to body of wall end face design elevation position, and constuction joint place wall form is installed and finished.
3. the wall form mounting method at a kind of underground waterproof concrete structure construction seam according to claim 2 place is characterized in that, the wall form inner wall position is provided with the crosspiece that is fixed on the split bolt.
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| CN106968352A (en) * | 2017-06-06 | 2017-07-21 | 中建八局第四建设有限公司 | Wall construction stitches construction method |
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| CN115142567A (en) * | 2022-06-24 | 2022-10-04 | 中国建筑第八工程局有限公司 | Unconventional construction joint system special for linear accelerator machine room and construction method thereof |
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| CN102900103B (en) | 2014-11-26 |
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