Investigation and calculation of a composite arch construction

One way to increase efficiency in the field of construction is to develop and improve new progressive design forms that reduce the consumption of materials, the complexity of manufacturing and erection, and the cost. These include a variety of combined systems, including arched ones. Frameless arch systems have not been widely developed in our country due to the lack of adaptedness of the design concept to Russian climatic conditions, while frame arch systems have a high consumption of materials. It is proposed to improve arch systems by increasing the spatial rigidity of the entire building made of rolled metal due to the combined action of the load-bearing frame and enclosing structures made of corrugated sheets. Thus, it becomes possible to use frameless arches on large spans. The use of such structures opens up wide opportunities for creating coverings that are characterized by lightweight and high technical and economic features.

Full-Mouth Screw-Retained Implant-Supported Rehabilitation with Multiunit Abutments Using Virtual Guided Surgery and Digital Prosthetics Protocol

Total rehabilitation is one of the most sophisticated kinds of dental implant-supported prosthetics. The usage of multiunit abutment system allows the clinician an accurate and passive fitting of screw-retained full-arch construction. In addition, it retains a condition of soft and bone tissues around prosthetic construction. The aim of this case is to demonstrate a modern approach in planning and realisation of full-mouth screw-retained dental implant prosthetics. A 59-year-old patient had an extraction of all failed teeth on upper and lower jaws with immediate 16 implant placement (8 implants on maxilla and 8 implants on mandible) using surgical template. Multiunit abutments were installed intraoperatively. Temporary constructions were fixed immediately after surgery. After 3 months of dental impressions, plaster models and their scan were prepared to make final screw-retained zirconium dioxide constructions. Reevaluation of functional and aesthetic result of the treatment was made after 12 months.

ALTERNATIVE DESIGN OF THE BUILDING STRUCTURE OF STEEL FRAME BRIDGE TYPE STEEL ARCH WITH WARREN FRAME IN TUKAD BANGKUNG BRIDGE IN BADUNG - BALI

In planning and designing a bridge it should consider the function of transportation needs, technical and architectural-aesthetic requirements which include: Traffic aspects, Technical aspects, Aesthetic aspects. the alternative bridge design structure of the steel arch bridge-type steel frame with warren frame on the Tukad Bridge in Bangkung district. Badung - Bali is a steel frame bridge that has an overall span of 360 m and 9.6 m wide. alternative upper structure at the Tukad Bangkung bridge Badung Regency - Bali with the merging of the steel arch construction of 2 roller joints and the warren frame structure. Where between the curve/arc with a steel profile plate connected by a cable that serves to provide strong support to the frame structure because of the long stretch. In the planning of the bridge this time using the L.R.F.D method and for the structural analysis modeling the writer uses the STAADPRO V8i assistive program. From the analysis of the results of the calculation of the structure above obtained planning dimensions of the Steel Arch bridge that is planned to use a steel profile, WF 350 x 175 x 7 x 11 for gel. elongated, WF 918 x 303 x 19 x 37 for gel. transversely, WF 350 x 350 x 12 x 9 for gel. transversely above, WF 498 x 432 x 45 x 70 for gel. parent, LD 250,250.25 for wind bonds.

Urban Planning of the Southeast Part of Trapezitsa in the Light of Latest Research

After the 30’s of the 13th century and until the end of the Tarnovo Kingdom in the south-east sector of Trapezitsa a specific urban planning was taking shape. Over several ledges are built some of the most significant Metropolitan churches, such as church № 3, 4 and 14, as well as a large closed ensemble near church №3, related to an eminent representative of the ecclesiastical hierarchy – most likely the bishop of this second in significance Metropolitan fort. Immediately south of the episcopate is attached a large duplex building, with an imposing appearance – columns and an arch construction. From the east it ends with an apse. There are no traces of mural paintings on the plastered walls. Among the findings there is a vessel with an image of the Star of David. It is possible that this building had social and religious functions and was related to the Jewish people, who inhabited this fort during the 13th-14th centuries of Metropolitan Tarnovo. Keywords: Trapezitsa, Church, Episcopate, Complex, Jewish People

Increase in Seismic Resistance for a Full-Scale Dry Stack Masonry Arch Subjected to Hinge Control

The seismic vulnerability and resulting damages to vaulted masonry is continuously observed with each new earthquake. The understanding of these systems is quite strong, and reinforcement strategies and techniques are continually advancing. Unfortunately, the application of reinforcement is typically applied in a way that the failure transforms directly from one of stability to strength. This direct transformation overlooks the potential behaviors of the system that exist between the two limits. To investigate and better understand the intermittent behavior of masonry arches, an in-scale dry joint masonry arch subjected to hinge control and a tilting plane loading condition was experimentally tested. The result of that experimentation revealed that the capacity can be increased and the failure defined, but the non-ideal conditions of slip and base deformations were observed as well. This work presents the second experimental campaign of a full-scale dry stack masonry arch subjected to hinge control and a tilting plane loading condition. In this campaign, the issue of slip is addressed in the arch construction, and the results show that the capacity of the full-scale arch can be increased and the failure defined.

Rediscovery of the Great Architect’s Bridge: Mimar Sinan Bridge, Istanbul, Turkey

A bridge is an important element of transportation which improves the accessibility of a location. Before the Industrial Revolution, stone masonry arch construction was the preferred method of construction of bridges with the longest spans and the highest durability. Multiple arches provided the solution when a single arch was insufficient to provide the required span. Bridge design required thorough consideration of the seismicity, geology, hydrology, bathymetry, and topography of the particular region, along with considerations of the functional and architectural design requirements of the bridge. This paper introduces for the first time a new concept of an “intermittent-bridge” and presents a technical inquiry into historical design considerations and contemporary protective and maintenance efforts for a sixteenth-century, multi-arch masonry intermittent-bridge built in Istanbul during the epoch of the Ottoman empire by the chief imperial architect, or mimar, Sinan.

Materializing Morality

This chapter examines the salt merchants’ role in constructing chastity arches—stone structures honoring women who maintained chaste widowhood—in She county in Huizhou. In the High Qing era, the Manchu court systematically patronized the construction of monumental objects, such as stone arches, with the dual object of inculcating Confucian morality in their illiterate subjects and displaying their imperial legitimacy. The Huizhou salt merchants, seeing an opportunity to expand their influence, devoted themselves to chastity arch construction in the local community of Huizhou, thus publicizing the virtuous deeds that the court rewarded. While these merchants used their economic prowess to participate in the state’s cultivation project, their financial support of these arches was itself a product of the court’s salt monopoly policies. At the same time, these monuments gave these wealthy businessmen the opportunity to bolster their reputations, display their wealth, and lay claim to legitimate dominance in local society.