CN101775817B - Structure for preventing cold penetration and dewing of basement base plate of costal building and construction method thereof - Google Patents
Structure for preventing cold penetration and dewing of basement base plate of costal building and construction method thereof Download PDFInfo
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- CN101775817B CN101775817B CN2010101055605A CN201010105560A CN101775817B CN 101775817 B CN101775817 B CN 101775817B CN 2010101055605 A CN2010101055605 A CN 2010101055605A CN 201010105560 A CN201010105560 A CN 201010105560A CN 101775817 B CN101775817 B CN 101775817B
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Abstract
The invention relates to the field of construction engineering, in particular to a structure for preventing the cold penetration and the dewing of a basement base plate of a costal building and a construction method thereof. The structure mainly comprises a base plate plain concrete cushion, waterproof coiled materials, watertight concrete, shear wall watertight concrete, an outer shear wall insulating layer and a protection wall. The invention is characterized in that a layer of common hollow concrete is added between the basement base plate concrete and the waterproof coiled materials. By casting the common hollow concrete and adding the insulating layer to the basement base plate, the basement base plate concrete does not have the problems of cold penetration and dewing at a low outside air temperature. The invention expands the design idea for the field of the insulation of the basement base plate of the costal building, and provides an effective method for fundamentally solving the common quality troubles of the cold penetration and the dewing of the basement base plate in the construction industry, thereby allowing a construction enterprise or a using enterprise not to spend human resources, material resources and financial resources year after year in dealing with the problems. The invention has prominent economic benefits and combined revenues.
Description
Technical field:
The present invention relates to building engineering field, particularly a kind ofly prevent to border on the sea that the building basement base plate is cold thoroughly, the structure and the job practices thereof of dewfall.
Technical background:
Basement engineering at the building that borders on the sea, insulation, anti-leakage, protection against the tide are an important techniques index and quality requirement, existing general treating method is, adopt methods such as the outer waterproof of coiled material, water-tight concrete are incubated, the insulation of frame part employing building-block outside waterproof, shear wall, but no matter be design or construction, all the basement base arrangement not being done insulation handles, when outside air temperature is low, the geological conditions owing to border on the sea, make the underground water freezing point very low, the basement bottom board concrete surface is easy to occur problem cold, dewfall.After engineering delivery is used, not destroying under the concrete prerequisite of basement bottom board, no matter take which kind of measure, this problem all can not get effective solution.
Summary of the invention:
The building basement base plate that borders on the sea basic reason cold thoroughly, dewfall is: because basement bottom board lacks external thermal insulation, direct and the ground generation interchange of heat of basement bottom board concrete, when outside air temperature is low, under the geological conditions that borders on the sea, the underground water freezing point is very low, so the underplate concrete temperature is also very low.Because the concrete coefficient of thermal conductivity is very big, cause underplate concrete cold thoroughly; Simultaneously, because air and underplate concrete excessive temperature differentials in the basement after their contacts condensation take place immediately, just the problem of dewfall has appearred.So, only do the basement bottom board concrete external insulation, could solve that underplate concrete is cold thoroughly, the problem of dewfall from root.
For realizing the purpose of foregoing invention, technical scheme of the present invention is following realization:
A kind ofly prevent to border on the sea that the building basement base plate is cold thoroughly, the structure of dewfall, comprise base plate plain concrete cushion layer, waterproof roll, basement bottom board water-tight concrete, shear wall water-tight concrete, shear wall external thermal insulation and protection wall, it is characterized in that, on the base plate plain concrete cushion layer, carry out waterproof roll, common coarse porous concrete is cast in the waterproof roll surface, and the basement bottom board water-tight concrete is cast in common coarse porous concrete surface; Facade waterproof coiled material inboard is the shear wall water-tight concrete, and the outside is the shear wall external thermal insulation, and outermost is the protection wall.
By pouring into a mould common coarse porous concrete, set up insulation layer for basement bottom board, make problem cold, dewfall can not take place under the basement bottom board concrete condition that externally temperature is very low yet.
Traditional method lacks the underplate concrete external thermal insulation, and the present invention breaks through traditional method, and core technology is to adopt common coarse porous concrete as the underplate concrete heat insulating material for external,
Operating principle of the present invention is such: its core technology is to adopt common coarse porous concrete as heat insulating material.Utilize the good heat-insulating property of common coarse porous concrete, the cast apparent density is at 1750～1900kg/m between basement bottom board concrete and waterproof roll
3Between, the common coarse porous concrete of compressive strength index between 7～10Mpa, its intensity choose load type and the size that depends on that this basement bears, as the load that bears is less and based on static load, desirable value less than normal, as the load that bears is big and based on dynamic load, then get value bigger than normal, make the basement bottom board concrete that good external thermal insulation arranged, greatly reduce the base plate coefficient of thermal conductivity, thereby avoided that underplate concrete is cold thoroughly, the generation of condensation trouble.
Common coarse porous concrete is formulated with cement, rubble, cobble, dry slag, drinking water etc., needs to do the construction match ratio according to on-the-spot material moisture content.
Job practices of the present invention comprises the steps:
1, bottom board plain concrete cushion layer and carry out waterproof coiled material;
2, the construction match ratio of doing according to on-the-spot material moisture content is mixed the common coarse porous concrete of system by concrete mixing plant supply or scene, and its compressive strength index is within 7～10Mpa.This concrete employing grade is 32.5 or 42.5 Portland cement, and cement weight is controlled at 235～275kg/m
3Within; Water/binder ratio (mixing water and cement weight than) is controlled at 1.3～0.4: within 1, can evenly be wrapped in aggregate surface with cement paste and not trickle and be as the criterion; Coarse aggregate adopts rubble, cobble and dry slag, coarse aggregate for single-grade, optimum grain-diameter is 10～20mm or 10～30mm, definitely can not adopt particle diameter less than 5mm or greater than the coarse aggregate of 40mm, rubble with the weight ratio of (cobble+dry slag) is: rubble: (cobble+dry slag)=1: 1, wherein, the weight ratio of cobble and dry slag is: cobble: dry slag=1: 2; The apparent density of the common coarse porous concrete of being prepared is at 1750～1900kg/m
3Between, construction match ratio (weight ratios of various materials) control range is: cement: water: rubble: cobble: dry slag=(235～275): (94～357): (559～785.5): (186～262): (373～523.5);
3, with the surface of common coarse porous concrete continuous pouring at waterproof coiled material, cast thickness is suitably chosen in 100～150mm, main local winter temperature situation of consideration and ground water content are subjected to two factors of seawater influence degree, if local winter temperature is very low or the ground water content is subjected to the seawater influence degree higher, then pouring into a mould thickness gets greatly, otherwise, get littler;
4. must be behind common coarse porous concrete casting complete 12 hours (final setting time), way is installed reinforcing bar and bottom board water-tight concrete and perpendicular wall or shear wall water-tight concrete in the above routinely;
5. after the facade waterproof coiled material was finished, way was done the perpendicular wall of basement or shear wall external thermal insulation and protection wall routinely, and institute is stressed that absolute altitude is identical with absolute altitude at the bottom of the common coarse porous concrete insulation layer at the bottom of perpendicular wall or shear wall external thermal insulation and the protection wall.
The present invention has expanded the mentality of designing of the building basement base plate field of thermal insulation that borders on the sea, also for construction industry radical cure basement bottom board common quality defect cold thoroughly, dewfall provides effective method, make that unit in charge of construction or applying unit needn't drop into human and material resources more year in year out, financial resources go to deal with this class problem simultaneously.So its economic benefit and comprehensive benefit are very remarkable.
Description of drawings:
Fig. 1 is a sectional drawing of the present invention
The specific embodiment:
Below in conjunction with accompanying drawing the present invention is further specified.
As shown in Figure 1, when base plate plain concrete cushion layer 7 poured into a mould finish and done waterproof coiled material 5 after, the construction match ratio of doing according to on-the-spot material moisture content, by concrete mixing plant supply or scene mix the system common coarse porous concrete 1, then with common coarse porous concrete 1 continuous pouring on waterproof coiled material 5 surfaces.Cast thickness is suitably chosen in 100～150mm, main local winter temperature situation of consideration and ground water content are subjected to two factors of seawater influence degree, if local winter temperature is very low or the ground water content is subjected to the seawater influence degree higher, then pours into a mould thickness and get greatly, otherwise, get littler.
Must be behind common coarse porous concrete 1 casting complete 12 hours (final setting time), way is installed reinforcing bar and bottom board water-tight concrete 2 and perpendicular wall or shear wall water-tight concrete 6 in the above routinely.
After facade waterproof coiled material 5 was finished, way was done the perpendicular wall of basement or shear wall external thermal insulation 3 and protection wall 4 routinely, and institute is stressed that perpendicular wall or shear wall external thermal insulation 3 and protection wall 4 end absolute altitude are identical with absolute altitude at the bottom of common coarse porous concrete 1 insulation layer.
As under the complex geological condition that borders on the sea, rich groundwater, when continuous 5 days of winter, the average lowest temperature was lower than-20 ℃, most widely used general, also most representative construction match ratio (weight ratio) is:
Cement: water: rubble: cobble: dry slag=275: 225: 700: 233: 467
Wherein: it is 42.5 Portland cement that cement is selected grade for use;
Coarse aggregate size is 10～30mm;
Common coarse porous concrete apparent density is 1900Kg/m
3, compressive strength is 10Mpa;
The cast thickness of common coarse porous concrete is 150mm.
Claims (4)
1. one kind prevents to border on the sea that the building basement base plate is cold thoroughly, the job practices of dewfall, finishes like this:
1) bottom board plain concrete cushion layer and carry out waterproof coiled material;
2) the construction match ratio of doing according to on-the-spot material moisture content, mix the common coarse porous concrete of system by concrete mixing plant supply or scene, its compressive strength index is within 7～10Mpa, and this concrete employing grade is 32.5 or 42.5 Portland cement, and cement weight is controlled at 235～275kg/m
3Within; Water/binder ratio is controlled at 1.3～0.4: within 1, can evenly be wrapped in aggregate surface with cement paste and not trickle and be as the criterion; Coarse aggregate adopts rubble, cobble and dry slag, be the coarse aggregate of single-grade, particle size range is 5～40mm, and the weight ratio of rubble and cobble and dry slag is: rubble: (cobble+dry slag)=1: 1, wherein, the weight ratio of cobble and dry slag is: cobble: dry slag=1: 2; The apparent density of the common coarse porous concrete of being prepared is at 1750～1900kg/m
3Between, construction match ratio control range is: cement: water: rubble: cobble: dry slag=(235～275): (94～357): (559～785.5): (186～262): (373～523.5);
3) with the surface of common coarse porous concrete continuous pouring at waterproof coiled material, cast thickness is suitably chosen in 100～150mm, main local winter temperature situation of consideration and ground water content are subjected to two factors of seawater influence degree, if local winter temperature is very low or the ground water content is subjected to the seawater influence degree higher, then pouring into a mould thickness gets greatly, otherwise, get littler;
4) must be after 12 hours at common coarse porous concrete casting complete, way is installed reinforcing bar and bottom board water-tight concrete and perpendicular wall or shear wall water-tight concrete in the above routinely;
5) after the facade waterproof coiled material is finished, way is done the perpendicular wall of basement or shear wall external thermal insulation and protection wall routinely, and absolute altitude is identical with absolute altitude at the bottom of the common coarse porous concrete insulation layer at the bottom of perpendicular wall or shear wall external thermal insulation and the protection wall.
2. a method according to claim 1 obtains prevents to border on the sea that the building basement base plate is cold thoroughly, the structure of dewfall, comprise base plate plain concrete cushion layer, waterproof roll, basement bottom board water-tight concrete, shear wall water-tight concrete, shear wall external thermal insulation and protection wall, it is characterized in that, on the base plate plain concrete cushion layer, carry out waterproof roll, common coarse porous concrete is cast in the waterproof roll surface, and the basement bottom board water-tight concrete is cast in common coarse porous concrete surface; Facade waterproof coiled material inboard is the shear wall water-tight concrete, and the outside is the shear wall external thermal insulation, and outermost is the protection wall.
3. a kind of structure according to claim 1 prevents to border on the sea, and the building basement base plate is cold thoroughly, the job practices of the structure of dewfall, it is characterized in that the common coarse porous concrete that is adopted adopts the coarse aggregate of single-grade, and particle diameter is 10～20mm or 10～30mm.
4. a kind of structure according to claim 1 prevents to border on the sea, and the building basement base plate is cold thoroughly, the job practices of the structure of dewfall, it is characterized in that, under the complex geological condition that borders on the sea, rich groundwater, when continuous 5 days of winter, the average lowest temperature was lower than-20 ℃, the construction match ratio was: cement: water: rubble: cobble: dry slag=275: 225: 700: 233: 467
Wherein: it is 42.5 Portland cement that cement is selected grade for use;
Coarse aggregate size is 10～30mm;
Common coarse porous concrete apparent density is 1900Kg/m
3, compressive strength is 10Mpa;
The cast thickness of common coarse porous concrete is 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101055605A CN101775817B (en) | 2010-02-04 | 2010-02-04 | Structure for preventing cold penetration and dewing of basement base plate of costal building and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101055605A CN101775817B (en) | 2010-02-04 | 2010-02-04 | Structure for preventing cold penetration and dewing of basement base plate of costal building and construction method thereof |
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| Publication Number | Publication Date |
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| CN101775817A CN101775817A (en) | 2010-07-14 |
| CN101775817B true CN101775817B (en) | 2011-12-21 |
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| CN2010101055605A Expired - Fee Related CN101775817B (en) | 2010-02-04 | 2010-02-04 | Structure for preventing cold penetration and dewing of basement base plate of costal building and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102733427B (en) * | 2012-07-09 | 2014-03-26 | 江苏顺通建设集团有限公司 | Water-proofing and permeability-proofing construction method for coastal civil air-defense constructions |
| CN107311691A (en) * | 2017-06-29 | 2017-11-03 | 中国建筑第八工程局有限公司 | Construction method and its application for carrying out foam concrete construction are designed according to default compression strength |
| CN113250224B (en) * | 2021-06-16 | 2023-02-07 | 湖北郧诚建设集团有限公司 | Foundation structure of mountaineering building and construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1335435A (en) * | 2001-08-29 | 2002-02-13 | 蒋学志 | Coil fusing waterproof construction method for underground building |
| RU2333321C1 (en) * | 2006-11-22 | 2008-09-10 | Христофор Авдеевич Джантимиров | Method for damp-proofing of below-grade building |
| CN101498136A (en) * | 2008-02-03 | 2009-08-05 | 钱忠勤 | After-pouring strips structure with high underground water level |
| CN201679024U (en) * | 2010-02-04 | 2010-12-22 | 魏勇 | Structure for preventing basement base plate of coastal building from chilling and dewing |
-
2010
- 2010-02-04 CN CN2010101055605A patent/CN101775817B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1335435A (en) * | 2001-08-29 | 2002-02-13 | 蒋学志 | Coil fusing waterproof construction method for underground building |
| RU2333321C1 (en) * | 2006-11-22 | 2008-09-10 | Христофор Авдеевич Джантимиров | Method for damp-proofing of below-grade building |
| CN101498136A (en) * | 2008-02-03 | 2009-08-05 | 钱忠勤 | After-pouring strips structure with high underground water level |
| CN201679024U (en) * | 2010-02-04 | 2010-12-22 | 魏勇 | Structure for preventing basement base plate of coastal building from chilling and dewing |
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| CN101775817A (en) | 2010-07-14 |
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