DE960800C - Protective layer to reduce horizontal loads on structures in the subsidence area - Google Patents
Protective layer to reduce horizontal loads on structures in the subsidence areaInfo
- Publication number
- DE960800C DE960800C DEST5052A DEST005052A DE960800C DE 960800 C DE960800 C DE 960800C DE ST5052 A DEST5052 A DE ST5052A DE ST005052 A DEST005052 A DE ST005052A DE 960800 C DE960800 C DE 960800C
- Authority
- DE
- Germany
- Prior art keywords
- structures
- protective layer
- horizontal loads
- subsidence area
- reduce horizontal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/34—Foundations for sinking or earthquake territories
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Revetment (AREA)
Description
Bei den Bergsenkungen durch Abbau von Kohle, Erzen usw. treten in der Gründungsebene der Bauwerke Zerrungen und Pressungen auf. Wenn die Bauwerke unterhalb der Geländeoberfläche gegründet werden, werden sie auch an dem aufgehenden Mauerwerk durch Pressungen beansprucht.When mining subsidence by mining coal, ores, etc. occur in the foundation level of the structures strains and pressures on. When the structures are founded below the surface of the ground, they will also be on the rising Masonry stressed by pressing.
Bei vielen Bauten können die Pressungen nur unter großem Materialaufwand ohne Schäden für das Bauwerk aufgenommen werden. Es bedeutet daher einen großen Vorteil, wenn die Drucke auf das Bauwerk vermindert werden. Es sind Vorschläge bekannt, den Druck auf das Hauptbauwerk dadurch zu vermindern bzw. ganz zu vermeiden, daß man im Abstand vom Bauwerk einen besonderen Schutzmantel aus Beton oder Mauerwerk schafft. Ausführungen in dieser Art sind jedoch nicht bekanntgeworden.In many buildings, the pressings can only be done with a great deal of material can be recorded without damage to the structure. It therefore means a great one Advantage if the pressure on the structure is reduced. There are known proposals to reduce the pressure on the main structure or to avoid it entirely that a special protective coating made of concrete or masonry is placed at a distance from the building creates. However, designs of this type have not become known.
Bei einem anderen Vorschlag soll zwischen Bauwerk und Baugrund ein Graben angeordnet werden, der mit tixotroper Flüssigkeit gefüllt wird.In another suggestion, a Trench are arranged, which is filled with thixotropic liquid.
Bei diesem Vorschlag ist zwischen Bauwerk und Baugrund eine Abdeckung des mit Flüssi2kpit gefüllten Grabens erforderlich.With this proposal there is a cover between the structure and the subsoil of the trench filled with liquid pit.
Diese Überdeckung erfordert wesentliche Kosten. Das Gelände neben dem Bauwerk kann auch nur unvollkommen genutzt werden.This excess coverage entails substantial costs. The site next to the building can only be used imperfectly.
Außerdem wirkt auf das Bannwerk stets mindestens der Flüssigkeitsdruck. Er ist im Normalfall doppelt so groß wie der Erddruck. Bei Bepflanzung in Nähe des Grabens ist außerdem damit zu rechnen, daß das Wurzelwerk der Bäume das in der tixotropen Flüssigkeit vorhandene Wasser verbraucht und damit die beabsichtigte Wirkung entfällt. Ein Verbrauch der Flüssigkeit kann auch schon durch Verdunstung und kapillare Absaugung erfolgen. Er erfolgt dadurch eine Eindickung der Flüssigkeit zu einem Ton.In addition, at least the liquid pressure always acts on the barrier. Normally it is twice as great as the earth pressure. When planted near the Graben is also to be expected that the root system of the trees that in the tixotropic Liquid consumes existing water and thus the intended effect is lost. The liquid can also be consumed by evaporation and capillary suction take place. This results in a thickening of the liquid to a tone.
Die geschilderten Nachteile .entfallen, wenn man zwischen Bauwerk und Baugrund ein Material mit großen Poren und geringem Widerstand gegen Zusammenpressen anordnet. Der Bauwerkschutz wird gemäß der Erfindung dadurch erreicht, daß um das Bauwerk herum eine Torfschicht eingebracht wird. Die erforderliche Stärke richtet sich nach der Länge des Bauwerkes, den bergbaulichen Gegebenheiten und der physikalischen Eigenschaft des verwendeten Torfes.The disadvantages outlined above do not apply if you move between a structure and subsoil, a material with large pores and little resistance to compression arranges. The building protection is achieved according to the invention in that around the A layer of peat is placed around the structure. The required strength aligns depending on the length of the structure, the mining conditions and the physical Characteristic of the peat used.
Der Torf ist für die in Frage kommenden Zeiträume des Abbaus so beständig, daß eine Erneuerung nicht erforderlich ist.The peat is so persistent for the periods of degradation in question that that renewal is not necessary.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.An exemplary embodiment of the invention is shown in the drawing.
Abb. i zeigt einen lotrechten Schnitt durch den Grundbaukörper mit der erfindungsgemäßen Torfschicht. Hierin ist a) das zu schützende Bauwerk, b) die erfindungsgemäße Torfschicht.Fig. I shows a vertical section through the basic structure with the peat layer according to the invention. Here is a) the structure to be protected, b) the peat layer according to the invention.
Abb. 2 zeigt das dazugehörige Belastungsschema. Die Kraftwirkungen sind folgende: Ohne Bodenbewegungen wirkt auf die Seiten des Bauwerkes der aktive Erddruck Ea. Bei Horizontalbewegungen des Bodens durch den Bergbau kann der Seitendruck auf den Wert des Erdwiderstandes oder passiven Erddruckes Ep ansteigen. Dieser ist bei Sandboden etwa io- bis 2omal größer als Ea. Bei langen schmalen Bauwerken können noch wesentlich höhere Werte auftreten. Dadurch, daß eine Torfschicht eingeschaltet wird, wirkt zusätzlich zu dem Wert Ea nur noch der Widerstand d Ew, dem die Torfschicht eine Zusammendrückung entgegensetzt. Er ist wesentlich geringer als der.Erdwiderstand Ew.Fig. 2 shows the associated load scheme. The force effects are as follows: Without ground movements, the active earth pressure Ea acts on the sides of the structure. When the ground moves horizontally through mining, the lateral pressure can rise to the value of the earth resistance or passive earth pressure Ep. In the case of sandy soil, this is about 10 to 20 times greater than Ea. Significantly higher values can occur in long, narrow structures. Because a peat layer is switched on, only the resistance d Ew acts in addition to the value Ea, which the peat layer opposes by compressing it. It is much lower than the earth resistance Ew.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST5052A DE960800C (en) | 1952-07-09 | 1952-07-09 | Protective layer to reduce horizontal loads on structures in the subsidence area |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST5052A DE960800C (en) | 1952-07-09 | 1952-07-09 | Protective layer to reduce horizontal loads on structures in the subsidence area |
Publications (1)
Publication Number | Publication Date |
---|---|
DE960800C true DE960800C (en) | 1957-03-28 |
Family
ID=7453707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEST5052A Expired DE960800C (en) | 1952-07-09 | 1952-07-09 | Protective layer to reduce horizontal loads on structures in the subsidence area |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE960800C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3516044A1 (en) * | 1985-05-04 | 1986-11-06 | Ed. Züblin AG, 7000 Stuttgart | Method for screening against underground vibrations, a device for carrying out the method as well as a damping wall for use in the method |
DE10234219A1 (en) * | 2002-07-27 | 2004-02-05 | Hock-Berghaus, Kay, Dr.-Ing. habil. | Method for stabilising ground prior to building has stabilising wedge shaped panels progressively driven into the ground with earth retaining sections positioned onto vertical supports to secure the exposed soil |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR513235A (en) * | 1920-02-06 | 1921-02-10 | Boy Ferme Et Cie | New process of foundations on compressible ground for stores intended to contain heavy loads resting directly on the ground |
DE714786C (en) * | 1936-05-23 | 1941-12-06 | Giovanni Rodio | Deep foundation system with caisson, sink well, piles, etc. like |
DE836473C (en) * | 1950-12-20 | 1952-04-15 | Hans Lorenz Dr Ing | Procedure for avoiding or largely reducing the stress on basic structures when strains and pressures occur in the subsoil in subsidence areas |
-
1952
- 1952-07-09 DE DEST5052A patent/DE960800C/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR513235A (en) * | 1920-02-06 | 1921-02-10 | Boy Ferme Et Cie | New process of foundations on compressible ground for stores intended to contain heavy loads resting directly on the ground |
DE714786C (en) * | 1936-05-23 | 1941-12-06 | Giovanni Rodio | Deep foundation system with caisson, sink well, piles, etc. like |
DE836473C (en) * | 1950-12-20 | 1952-04-15 | Hans Lorenz Dr Ing | Procedure for avoiding or largely reducing the stress on basic structures when strains and pressures occur in the subsoil in subsidence areas |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3516044A1 (en) * | 1985-05-04 | 1986-11-06 | Ed. Züblin AG, 7000 Stuttgart | Method for screening against underground vibrations, a device for carrying out the method as well as a damping wall for use in the method |
DE10234219A1 (en) * | 2002-07-27 | 2004-02-05 | Hock-Berghaus, Kay, Dr.-Ing. habil. | Method for stabilising ground prior to building has stabilising wedge shaped panels progressively driven into the ground with earth retaining sections positioned onto vertical supports to secure the exposed soil |
DE10234219B4 (en) * | 2002-07-27 | 2006-11-02 | Hock-Berghaus, Kay, Dr.-Ing. habil. | Method for anticipating the displacement path for mobilizing the earth resistance by introducing replacement bodies |
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